From 0226404d9af7784c0f1e1144c983ae7ecd37e2c0 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Tue, 20 Feb 2024 18:46:14 +0530
Subject: [PATCH 01/30] Add some relevant files and venvs to ignore

---
 .gitignore | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.gitignore b/.gitignore
index d1c72e2d9..e09527154 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@ __pycache__
 *.py[co]
 *.pyd
 *.so
+.DS_Store
 
 # Packages
 *.egg
@@ -32,6 +33,12 @@ cythonize.dat
 pywt/version.py
 build.log
 
+# Virtual environments
+.env/
+env/
+venv/
+.venv/
+
 # asv files
 asv/env
 asv/html

From a05ab895e7eabc5244fcb3a64d8b38e52be8ae70 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Tue, 20 Feb 2024 18:46:50 +0530
Subject: [PATCH 02/30] Clarify + assert correct Python version lower bounds

---
 README.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.rst b/README.rst
index 79f24f583..fd1aec91c 100644
--- a/README.rst
+++ b/README.rst
@@ -65,7 +65,7 @@ For more usage examples see the `demo`_ directory in the source package.
 Installation
 ------------
 
-PyWavelets supports `Python`_ >=3.7, and is only dependent on `NumPy`_
+PyWavelets supports `Python`_ >=3.9, and is only dependent on `NumPy`_
 (supported versions are currently ``>= 1.14.6``). To pass all of the tests,
 `Matplotlib`_ is also required. `SciPy`_ is also an optional dependency. When
 present, FFT-based continuous wavelet transforms will use FFTs from SciPy

From 05805797ad9d5ae546408aaa6d7a1c45608d64ee Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Tue, 20 Feb 2024 21:58:12 +0530
Subject: [PATCH 03/30] Add workflow for testing WASM distribution

---
 .github/workflows/emscripten.yml | 60 ++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 .github/workflows/emscripten.yml

diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
new file mode 100644
index 000000000..fd5068fae
--- /dev/null
+++ b/.github/workflows/emscripten.yml
@@ -0,0 +1,60 @@
+name: Test Pyodide build for PyWavelets
+
+# TODO: uncomment after testing
+on:
+  push:
+    # branches:
+    #   - master
+    #   - v1.**
+  pull_request:
+    # branches:
+      # - master
+      # - v1.**
+  workflow_dispatch:
+  schedule:
+    - cron: '0 3 * * *'
+
+jobs:
+  build_wasm_emscripten:
+    runs-on: ubuntu-latest
+    # Uncomment the following line to test changes on a fork
+    # if: github.repository == 'PyWavelets/pywt'
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python 3.11
+        id: setup-python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.11.2'
+
+      - name: Install prerequisites
+        run: |
+          python -m pip install pyodide-build "pydantic<2"
+          echo EMSCRIPTEN_VERSION=$(pyodide config get emscripten_version) >> $GITHUB_ENV
+
+      - name: Set up Emscripten toolchain
+        uses: mymindstorm/setup-emscripten@v14
+        with:
+          version: ${{ env.EMSCRIPTEN_VERSION }}
+          actions-cache-folder: emsdk-cache
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4.0.2
+        with:
+          node-version: '18'
+
+      - name: Build PyWavelets
+        run: |
+          pyodide build
+
+      - name: Install and test wheel
+        run: |
+          pyodide venv .venv-pyodide
+          source .venv-pyodide/bin/activate
+          pip install dist/*.whl
+          pushd demo
+          pip install matplotlib pytest
+          python -c "import pywt; print(pywt.__version__)"
+          pytest --pyargs pywt

From a2ed0675b749376a0a8141491e42b4b2ac2c8387 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Tue, 20 Feb 2024 22:53:24 +0530
Subject: [PATCH 04/30] For now, skip tests that use `concurrent.futures`

---
 pywt/_pytest.py | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/pywt/_pytest.py b/pywt/_pytest.py
index cfc9f0590..4f671dd1e 100644
--- a/pywt/_pytest.py
+++ b/pywt/_pytest.py
@@ -1,6 +1,7 @@
 """common test-related code."""
 import os
 import sys
+import platform
 import multiprocessing
 import numpy as np
 import pytest
@@ -18,16 +19,16 @@
            ]
 
 try:
-    if sys.version_info[0] == 2:
-        import futures
-    else:
-        from concurrent import futures
+    from concurrent import futures
     max_workers = multiprocessing.cpu_count()
     futures_available = True
-except ImportError:
+# Check if running on Emscripten/WASM, and skip tests that require concurrency.
+# Relevant issue: https://github.com/pyodide/pyodide/issues/237
+except ImportError or (platform.machine() in ["wasm32", "wasm64"]):
     futures_available = False
     futures = None
 
+
 # check if pymatbridge + MATLAB tests should be run
 matlab_result_dict_dwt = None
 matlab_result_dict_cwt = None
@@ -57,7 +58,7 @@
     matlab_result_dict_dwt = np.load(matlab_data_file_dwt)
 
 uses_futures = pytest.mark.skipif(
-    not futures_available, reason='futures not available')
+    not futures_available, reason='futures not available, possibly running on Emscripten/WASM.')
 uses_matlab = pytest.mark.skipif(
     matlab_missing, reason='pymatbridge and/or Matlab not available')
 uses_pymatbridge = pytest.mark.skipif(

From 198fc92f71986bc06479841dff89a4109b188085 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 19:16:10 +0530
Subject: [PATCH 05/30] Enable coloured output for GitHub Actions

---
 .github/workflows/emscripten.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
index fd5068fae..896b66091 100644
--- a/.github/workflows/emscripten.yml
+++ b/.github/workflows/emscripten.yml
@@ -14,6 +14,9 @@ on:
   schedule:
     - cron: '0 3 * * *'
 
+env:
+  FORCE_COLOR: 3
+
 jobs:
   build_wasm_emscripten:
     runs-on: ubuntu-latest

From 80ae120073072796fbff7ae0f9eed783155e6703 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 19:16:35 +0530
Subject: [PATCH 06/30] Use different check for Emscripten Python interpreter

---
 pywt/_pytest.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/pywt/_pytest.py b/pywt/_pytest.py
index 4f671dd1e..13512afff 100644
--- a/pywt/_pytest.py
+++ b/pywt/_pytest.py
@@ -1,7 +1,6 @@
 """common test-related code."""
 import os
 import sys
-import platform
 import multiprocessing
 import numpy as np
 import pytest
@@ -24,7 +23,7 @@
     futures_available = True
 # Check if running on Emscripten/WASM, and skip tests that require concurrency.
 # Relevant issue: https://github.com/pyodide/pyodide/issues/237
-except ImportError or (platform.machine() in ["wasm32", "wasm64"]):
+except ImportError or (sys.platform == "emscripten"):
     futures_available = False
     futures = None
 
@@ -58,7 +57,7 @@
     matlab_result_dict_dwt = np.load(matlab_data_file_dwt)
 
 uses_futures = pytest.mark.skipif(
-    not futures_available, reason='futures not available, possibly running on Emscripten/WASM.')
+    not futures_available, reason='futures not available')
 uses_matlab = pytest.mark.skipif(
     matlab_missing, reason='pymatbridge and/or Matlab not available')
 uses_pymatbridge = pytest.mark.skipif(

From 7687665a25ba6288d4896820bcac78f936d2cdfa Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 19:17:10 +0530
Subject: [PATCH 07/30] Rename `ImportError` error message for
 `batch_processing` module

---
 demo/batch_processing.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/demo/batch_processing.py b/demo/batch_processing.py
index 1f55acc20..ae11a9fc8 100644
--- a/demo/batch_processing.py
+++ b/demo/batch_processing.py
@@ -24,8 +24,7 @@
     from concurrent import futures
 except ImportError:
     raise ImportError(
-        "This demo requires concurrent.futures.  It can be installed for "
-        "for python 2.x via:  pip install futures")
+        "This demo requires concurrent.futures. If you are on WebAssembly, this is not available.")
 
 import numpy as np
 from numpy.testing import assert_array_equal

From 9941e055f9fdc1ad6facc6ac4e05a4ead2433aed Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 19:57:16 +0530
Subject: [PATCH 08/30] Try fixing bad file descriptors via `os.path.abspath`

---
 pywt/data/_readers.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 258230c20..1c52d46c3 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -36,7 +36,7 @@ def ascent():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(__file__), 'ascent.npz')
+    fname = os.path.dirname(os.path.abspath(__file__), 'ascent.npz')
     ascent = np.load(fname)['data']
     return ascent
 
@@ -71,7 +71,7 @@ def aero():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(__file__), 'aero.npz')
+    fname = os.path.dirname(os.path.abspath(__file__), 'aero.npz')
     aero = np.load(fname)['data']
     return aero
 
@@ -117,7 +117,7 @@ def camera():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(__file__), 'camera.npz')
+    fname = os.path.dirname(os.path.abspath(__file__), 'camera.npz')
     camera = np.load(fname)['data']
     return camera
 
@@ -147,7 +147,7 @@ def ecg():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.join(os.path.dirname(__file__), 'ecg.npy')
+    fname = os.path.dirname(os.path.abspath(__file__), 'ecg.npy')
     ecg = np.load(fname)
     return ecg
 
@@ -183,7 +183,7 @@ def nino():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.join(os.path.dirname(__file__), 'sst_nino3.npy')
+    fname = os.path.dirname(os.path.abspath(__file__), 'sst_nino3.npy')
     sst_csv = np.load(fname)
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)
     # take only full years

From 7f95d653898362bccdac9520b669f4140b209917 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 20:08:53 +0530
Subject: [PATCH 09/30] Revisit NumPy-style `IS_WASM` check

---
 pywt/_pytest.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pywt/_pytest.py b/pywt/_pytest.py
index 13512afff..0dda2cd90 100644
--- a/pywt/_pytest.py
+++ b/pywt/_pytest.py
@@ -1,6 +1,7 @@
 """common test-related code."""
 import os
 import sys
+import platform
 import multiprocessing
 import numpy as np
 import pytest
@@ -23,9 +24,14 @@
     futures_available = True
 # Check if running on Emscripten/WASM, and skip tests that require concurrency.
 # Relevant issue: https://github.com/pyodide/pyodide/issues/237
-except ImportError or (sys.platform == "emscripten"):
+except (sys.platform == "emscripten") or (platform.machine() in ["wasm32", "wasm64"]):
     futures_available = False
     futures = None
+    max_workers = 1
+except ImportError:
+    futures_available = False
+    futures = None
+    max_workers = 1
 
 
 # check if pymatbridge + MATLAB tests should be run

From cd692155bb03a4fff57aab214891072ab59f83b1 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 20:14:07 +0530
Subject: [PATCH 10/30] Fix `os` module kwargs error

Similar to commit 9941e055f9fdc1ad6facc6ac4e05a4ead2433aed, I can revert both later on
---
 pywt/data/_readers.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 1c52d46c3..01dc690ef 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -36,7 +36,7 @@ def ascent():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'ascent.npz')
+    fname = os.path.join(os.path.abspath(__file__), 'ascent.npz')
     ascent = np.load(fname)['data']
     return ascent
 
@@ -71,7 +71,7 @@ def aero():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'aero.npz')
+    fname = os.path.join(os.path.abspath(__file__), 'aero.npz')
     aero = np.load(fname)['data']
     return aero
 
@@ -117,7 +117,7 @@ def camera():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'camera.npz')
+    fname = os.path.join(os.path.abspath(__file__), 'camera.npz')
     camera = np.load(fname)['data']
     return camera
 
@@ -147,7 +147,7 @@ def ecg():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'ecg.npy')
+    fname = os.path.join(os.path.abspath(__file__), 'ecg.npy')
     ecg = np.load(fname)
     return ecg
 
@@ -183,7 +183,7 @@ def nino():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'sst_nino3.npy')
+    fname = os.path.join(os.path.abspath(__file__), 'sst_nino3.npy')
     sst_csv = np.load(fname)
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)
     # take only full years

From 024989219f38cb9335d51f2259b776cbbc091608 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 20:24:43 +0530
Subject: [PATCH 11/30] Revert "Fix `os` module kwargs error"

This reverts commit cd692155bb03a4fff57aab214891072ab59f83b1.
---
 pywt/data/_readers.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 01dc690ef..1c52d46c3 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -36,7 +36,7 @@ def ascent():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.abspath(__file__), 'ascent.npz')
+    fname = os.path.dirname(os.path.abspath(__file__), 'ascent.npz')
     ascent = np.load(fname)['data']
     return ascent
 
@@ -71,7 +71,7 @@ def aero():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.abspath(__file__), 'aero.npz')
+    fname = os.path.dirname(os.path.abspath(__file__), 'aero.npz')
     aero = np.load(fname)['data']
     return aero
 
@@ -117,7 +117,7 @@ def camera():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.abspath(__file__), 'camera.npz')
+    fname = os.path.dirname(os.path.abspath(__file__), 'camera.npz')
     camera = np.load(fname)['data']
     return camera
 
@@ -147,7 +147,7 @@ def ecg():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.join(os.path.abspath(__file__), 'ecg.npy')
+    fname = os.path.dirname(os.path.abspath(__file__), 'ecg.npy')
     ecg = np.load(fname)
     return ecg
 
@@ -183,7 +183,7 @@ def nino():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.join(os.path.abspath(__file__), 'sst_nino3.npy')
+    fname = os.path.dirname(os.path.abspath(__file__), 'sst_nino3.npy')
     sst_csv = np.load(fname)
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)
     # take only full years

From f20d0887e5ff7ad5ec96799362153985ad5b027f Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 20:24:47 +0530
Subject: [PATCH 12/30] Revert "Try fixing bad file descriptors via
 `os.path.abspath`"

This reverts commit 9941e055f9fdc1ad6facc6ac4e05a4ead2433aed.
---
 pywt/data/_readers.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 1c52d46c3..258230c20 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -36,7 +36,7 @@ def ascent():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'ascent.npz')
+    fname = os.path.join(os.path.dirname(__file__), 'ascent.npz')
     ascent = np.load(fname)['data']
     return ascent
 
@@ -71,7 +71,7 @@ def aero():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'aero.npz')
+    fname = os.path.join(os.path.dirname(__file__), 'aero.npz')
     aero = np.load(fname)['data']
     return aero
 
@@ -117,7 +117,7 @@ def camera():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'camera.npz')
+    fname = os.path.join(os.path.dirname(__file__), 'camera.npz')
     camera = np.load(fname)['data']
     return camera
 
@@ -147,7 +147,7 @@ def ecg():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'ecg.npy')
+    fname = os.path.join(os.path.dirname(__file__), 'ecg.npy')
     ecg = np.load(fname)
     return ecg
 
@@ -183,7 +183,7 @@ def nino():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.dirname(os.path.abspath(__file__), 'sst_nino3.npy')
+    fname = os.path.join(os.path.dirname(__file__), 'sst_nino3.npy')
     sst_csv = np.load(fname)
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)
     # take only full years

From 90d13d01be884a44be808841072c502d94b7603c Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 22:56:34 +0530
Subject: [PATCH 13/30] Hope to fix a few `mra_roundtrip` data tests

---
 pywt/tests/test_mra.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pywt/tests/test_mra.py b/pywt/tests/test_mra.py
index 055ac1fa7..af8bdd31d 100644
--- a/pywt/tests/test_mra.py
+++ b/pywt/tests/test_mra.py
@@ -6,6 +6,7 @@
 
 import pywt
 from pywt import data
+from pywt._pytest import uses_futures
 
 # tolerances used in accuracy comparisons
 tol_single = 1e-6
@@ -17,6 +18,7 @@
 # 1d mra tests
 ####
 
+@uses_futures
 @pytest.mark.parametrize('wavelet', ['db2', 'sym4', 'coif5'])
 @pytest.mark.parametrize('transform', ['dwt', 'swt'])
 @pytest.mark.parametrize('mode', pywt.Modes.modes)

From 15b6eae0fd28db034d8d999324933d7715b095c2 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 23:10:37 +0530
Subject: [PATCH 14/30] Try loading data files via conversion to abspath

---
 pywt/data/_readers.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 258230c20..931cfd0eb 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -36,7 +36,8 @@ def ascent():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(__file__), 'ascent.npz')
+    fname = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'ascent.npz')
+    fname = os.path.abspath(fname)
     ascent = np.load(fname)['data']
     return ascent
 
@@ -72,6 +73,7 @@ def aero():
 
     """
     fname = os.path.join(os.path.dirname(__file__), 'aero.npz')
+    fname = os.path.abspath(fname)
     aero = np.load(fname)['data']
     return aero
 
@@ -118,6 +120,7 @@ def camera():
 
     """
     fname = os.path.join(os.path.dirname(__file__), 'camera.npz')
+    fname = os.path.abspath(fname)
     camera = np.load(fname)['data']
     return camera
 
@@ -148,6 +151,7 @@ def ecg():
     >>> plt.show() # doctest: +SKIP
     """
     fname = os.path.join(os.path.dirname(__file__), 'ecg.npy')
+    fname = os.path.abspath(fname)
     ecg = np.load(fname)
     return ecg
 
@@ -184,6 +188,7 @@ def nino():
     >>> plt.show() # doctest: +SKIP
     """
     fname = os.path.join(os.path.dirname(__file__), 'sst_nino3.npy')
+    fname = os.path.abspath(fname)
     sst_csv = np.load(fname)
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)
     # take only full years

From bc67ce7a34db264908c0bffcc1912e32bb8276ea Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Wed, 21 Feb 2024 23:20:38 +0530
Subject: [PATCH 15/30] Some more path-abspath trickery

---
 pywt/data/_readers.py | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 931cfd0eb..0e0f7faaf 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -36,8 +36,7 @@ def ascent():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'ascent.npz')
-    fname = os.path.abspath(fname)
+    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'ascent.npz')
     ascent = np.load(fname)['data']
     return ascent
 
@@ -72,8 +71,7 @@ def aero():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(__file__), 'aero.npz')
-    fname = os.path.abspath(fname)
+    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'aero.npz')
     aero = np.load(fname)['data']
     return aero
 
@@ -119,8 +117,7 @@ def camera():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(__file__), 'camera.npz')
-    fname = os.path.abspath(fname)
+    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'camera.npz')
     camera = np.load(fname)['data']
     return camera
 
@@ -150,8 +147,7 @@ def ecg():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.join(os.path.dirname(__file__), 'ecg.npy')
-    fname = os.path.abspath(fname)
+    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'ecg.npy')
     ecg = np.load(fname)
     return ecg
 
@@ -187,8 +183,7 @@ def nino():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.join(os.path.dirname(__file__), 'sst_nino3.npy')
-    fname = os.path.abspath(fname)
+    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'sst_nino3.npy')
     sst_csv = np.load(fname)
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)
     # take only full years

From 3b743b5dfd78aa890497dc860d14b4605a799d26 Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Wed, 21 Feb 2024 20:26:50 +0100
Subject: [PATCH 16/30] TST: fix test condition for Pyodide

---
 pywt/_pytest.py               |  7 ++++++-
 pywt/tests/test_concurrent.py | 12 +++++++-----
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/pywt/_pytest.py b/pywt/_pytest.py
index 0dda2cd90..678cb4b31 100644
--- a/pywt/_pytest.py
+++ b/pywt/_pytest.py
@@ -24,6 +24,7 @@
     futures_available = True
 # Check if running on Emscripten/WASM, and skip tests that require concurrency.
 # Relevant issue: https://github.com/pyodide/pyodide/issues/237
+# FIXME: you can't do `except a_bool`
 except (sys.platform == "emscripten") or (platform.machine() in ["wasm32", "wasm64"]):
     futures_available = False
     futures = None
@@ -34,6 +35,9 @@
     max_workers = 1
 
 
+IS_WASM = (sys.platform == "emscripten") or (platform.machine() in ["wasm32", "wasm64"])
+
+
 # check if pymatbridge + MATLAB tests should be run
 matlab_result_dict_dwt = None
 matlab_result_dict_cwt = None
@@ -63,7 +67,8 @@
     matlab_result_dict_dwt = np.load(matlab_data_file_dwt)
 
 uses_futures = pytest.mark.skipif(
-    not futures_available, reason='futures not available')
+    True, reason='futures not available')
+    #not futures_available, reason='futures not available')
 uses_matlab = pytest.mark.skipif(
     matlab_missing, reason='pymatbridge and/or Matlab not available')
 uses_pymatbridge = pytest.mark.skipif(
diff --git a/pywt/tests/test_concurrent.py b/pywt/tests/test_concurrent.py
index 041171fd8..bdc719598 100644
--- a/pywt/tests/test_concurrent.py
+++ b/pywt/tests/test_concurrent.py
@@ -8,9 +8,11 @@
 import warnings
 import numpy as np
 from functools import partial
+
+import pytest
 from numpy.testing import assert_array_equal, assert_allclose
-from pywt._pytest import uses_futures, futures, max_workers
 
+from pywt._pytest import IS_WASM, futures, max_workers
 import pywt
 
 
@@ -32,7 +34,7 @@ def _assert_all_coeffs_equal(coefs1, coefs2):
     return True
 
 
-@uses_futures
+@pytest.mark.skipif(IS_WASM, reason="no futures support in Pyodide")
 def test_concurrent_swt():
     # tests error-free concurrent operation (see gh-288)
     # swt on 1D data calls the Cython swt
@@ -53,7 +55,7 @@ def test_concurrent_swt():
         _assert_all_coeffs_equal(expected_result, results[-1])
 
 
-@uses_futures
+@pytest.mark.skipif(IS_WASM, reason="no futures support in Pyodide")
 def test_concurrent_wavedec():
     # wavedec on 1D data calls the Cython dwt_single
     # other cases call dwt_axis
@@ -70,7 +72,7 @@ def test_concurrent_wavedec():
         _assert_all_coeffs_equal(expected_result, results[-1])
 
 
-@uses_futures
+@pytest.mark.skipif(IS_WASM, reason="no futures support in Pyodide")
 def test_concurrent_dwt():
     # dwt on 1D data calls the Cython dwt_single
     # other cases call dwt_axis
@@ -87,7 +89,7 @@ def test_concurrent_dwt():
         _assert_all_coeffs_equal([expected_result, ], [results[-1], ])
 
 
-@uses_futures
+@pytest.mark.skipif(IS_WASM, reason="no futures support in Pyodide")
 def test_concurrent_cwt():
     atol = rtol = 1e-14
     time, sst = pywt.data.nino()

From f2d8a9caca7fe6bd55b3ac5209b7884c3da144e2 Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Wed, 21 Feb 2024 21:43:53 +0100
Subject: [PATCH 17/30] TST: ensure file handles get closed

---
 pywt/data/_readers.py | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 0e0f7faaf..aefb4d01c 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -37,7 +37,9 @@ def ascent():
 
     """
     fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'ascent.npz')
-    ascent = np.load(fname)['data']
+    with open(fname, 'rb') as f:
+        ascent = np.load(f)['data']
+
     return ascent
 
 
@@ -72,7 +74,9 @@ def aero():
 
     """
     fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'aero.npz')
-    aero = np.load(fname)['data']
+    with open(fname, 'rb') as f:
+        aero = np.load(f)['data']
+
     return aero
 
 
@@ -118,7 +122,9 @@ def camera():
 
     """
     fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'camera.npz')
-    camera = np.load(fname)['data']
+    with open(fname, 'rb') as f:
+        camera = np.load(f)['data']
+
     return camera
 
 
@@ -148,7 +154,9 @@ def ecg():
     >>> plt.show() # doctest: +SKIP
     """
     fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'ecg.npy')
-    ecg = np.load(fname)
+    with open(fname, 'rb') as f:
+        ecg = np.load(f)
+
     return ecg
 
 
@@ -184,7 +192,9 @@ def nino():
     >>> plt.show() # doctest: +SKIP
     """
     fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'sst_nino3.npy')
-    sst_csv = np.load(fname)
+    with open(fname, 'rb') as f:
+        sst_csv = np.load(f)
+
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)
     # take only full years
     n = int(np.floor(sst_csv.shape[0]/12.)*12.)

From d5008f7352dd8726cb338d1f88eecb98d8be0655 Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Wed, 21 Feb 2024 22:09:38 +0100
Subject: [PATCH 18/30] use importlib.resources instead of `__file__`

---
 pywt/data/_readers.py | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index aefb4d01c..6879ca256 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -1,3 +1,4 @@
+import importlib
 import os
 
 import numpy as np
@@ -36,8 +37,8 @@ def ascent():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'ascent.npz')
-    with open(fname, 'rb') as f:
+    _datadir = importlib.resources.files('pywt.data')
+    with importlib.resources.as_file(_datadir.joinpath('ascent.npz')) as f:
         ascent = np.load(f)['data']
 
     return ascent
@@ -73,8 +74,8 @@ def aero():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'aero.npz')
-    with open(fname, 'rb') as f:
+    _datadir = importlib.resources.files('pywt.data')
+    with importlib.resources.as_file(_datadir.joinpath('aero.npz')) as f:
         aero = np.load(f)['data']
 
     return aero
@@ -121,8 +122,8 @@ def camera():
     >>> plt.show() # doctest: +SKIP
 
     """
-    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'camera.npz')
-    with open(fname, 'rb') as f:
+    _datadir = importlib.resources.files('pywt.data')
+    with importlib.resources.as_file(_datadir.joinpath('camera.npz')) as f:
         camera = np.load(f)['data']
 
     return camera
@@ -153,8 +154,8 @@ def ecg():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'ecg.npy')
-    with open(fname, 'rb') as f:
+    _datadir = importlib.resources.files('pywt.data')
+    with importlib.resources.as_file(_datadir.joinpath('ecg.npy')) as f:
         ecg = np.load(f)
 
     return ecg
@@ -191,8 +192,8 @@ def nino():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    fname = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'sst_nino3.npy')
-    with open(fname, 'rb') as f:
+    _datadir = importlib.resources.files('pywt.data')
+    with importlib.resources.as_file(_datadir.joinpath('sst_nino3.npy')) as f:
         sst_csv = np.load(f)
 
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)

From a4ab51e968a138c6b8d63fde4cbfda87067a2abb Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Wed, 21 Feb 2024 22:34:25 +0100
Subject: [PATCH 19/30] try caching data loading

---
 pywt/data/_readers.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 6879ca256..40244ab46 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -1,9 +1,11 @@
+import functools
 import importlib
 import os
 
 import numpy as np
 
 
+@functools.cache
 def ascent():
     """
     Get an 8-bit grayscale bit-depth, 512 x 512 derived image for
@@ -44,6 +46,7 @@ def ascent():
     return ascent
 
 
+@functools.cache
 def aero():
     """
     Get an 8-bit grayscale bit-depth, 512 x 512 derived image for
@@ -81,6 +84,7 @@ def aero():
     return aero
 
 
+@functools.cache
 def camera():
     """
     Get an 8-bit grayscale bit-depth, 512 x 512 derived image for
@@ -129,6 +133,7 @@ def camera():
     return camera
 
 
+@functools.cache
 def ecg():
     """
     Get 1024 points of an ECG timeseries.
@@ -161,6 +166,7 @@ def ecg():
     return ecg
 
 
+@functools.cache
 def nino():
     """
     This data contains the averaged monthly sea surface temperature in degrees

From f69782e966b6fa1523b81e14e6c6aaaec5216653 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 13:39:49 +0530
Subject: [PATCH 20/30] Git-ignore pytest cache directory tree

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index e09527154..1bd984aa3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@ __pycache__
 *.pyd
 *.so
 .DS_Store
+.pytest_cache/
 
 # Packages
 *.egg

From 2e0e490871ce4e8b276ded902b5f7e7e65629fa0 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 13:45:54 +0530
Subject: [PATCH 21/30] Remove incorrect boolean statement provided to `except`
 clause

---
 pywt/_pytest.py | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/pywt/_pytest.py b/pywt/_pytest.py
index 678cb4b31..c34664eee 100644
--- a/pywt/_pytest.py
+++ b/pywt/_pytest.py
@@ -22,19 +22,13 @@
     from concurrent import futures
     max_workers = multiprocessing.cpu_count()
     futures_available = True
-# Check if running on Emscripten/WASM, and skip tests that require concurrency.
-# Relevant issue: https://github.com/pyodide/pyodide/issues/237
-# FIXME: you can't do `except a_bool`
-except (sys.platform == "emscripten") or (platform.machine() in ["wasm32", "wasm64"]):
-    futures_available = False
-    futures = None
-    max_workers = 1
 except ImportError:
     futures_available = False
     futures = None
     max_workers = 1
 
-
+# Check if running on Emscripten/WASM, and skip tests that require concurrency.
+# Relevant issue: https://github.com/pyodide/pyodide/issues/237
 IS_WASM = (sys.platform == "emscripten") or (platform.machine() in ["wasm32", "wasm64"])
 
 
@@ -68,7 +62,7 @@
 
 uses_futures = pytest.mark.skipif(
     True, reason='futures not available')
-    #not futures_available, reason='futures not available')
+    # not futures_available, reason='futures not available')
 uses_matlab = pytest.mark.skipif(
     matlab_missing, reason='pymatbridge and/or Matlab not available')
 uses_pymatbridge = pytest.mark.skipif(

From ef078b0ea32c7d20df68a06d3126b424bcfc6e02 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 15:38:36 +0530
Subject: [PATCH 22/30] Rewrite `.npy` file paths as `.npz` archives

---
 pywt/data/_readers.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index 40244ab46..b6f378986 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -160,8 +160,8 @@ def ecg():
     >>> plt.show() # doctest: +SKIP
     """
     _datadir = importlib.resources.files('pywt.data')
-    with importlib.resources.as_file(_datadir.joinpath('ecg.npy')) as f:
-        ecg = np.load(f)
+    with importlib.resources.as_file(_datadir.joinpath('ecg.npz')) as f:
+        ecg = np.load(f)['data']
 
     return ecg
 
@@ -199,8 +199,8 @@ def nino():
     >>> plt.show() # doctest: +SKIP
     """
     _datadir = importlib.resources.files('pywt.data')
-    with importlib.resources.as_file(_datadir.joinpath('sst_nino3.npy')) as f:
-        sst_csv = np.load(f)
+    with importlib.resources.as_file(_datadir.joinpath('sst_nino3.npz')) as f:
+        sst_csv = np.load(f)['data']
 
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)
     # take only full years

From 7633198470a54bec147da45c947e35b6241f4553 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 15:39:17 +0530
Subject: [PATCH 23/30] Convert ecg to NumPy compressed archive

---
 pywt/data/{ecg.npy => ecg.npz} | Bin 4176 -> 4358 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)
 rename pywt/data/{ecg.npy => ecg.npz} (93%)

diff --git a/pywt/data/ecg.npy b/pywt/data/ecg.npz
similarity index 93%
rename from pywt/data/ecg.npy
rename to pywt/data/ecg.npz
index 119916b039439aef044ae8a4ab1b0d9cb1de3a2a..ac3961a2da271468d7a34a626a2736f12a3230fb 100644
GIT binary patch
delta 196
zcmcbh(5B=Z;LXgU%K!n23<AFoxc`R&4h9j1l*E!my}W`-Mg{?f1_6jF7(Ll9)HfiK
zk)doNr<=M0abTkxmw-=zHzSiSGpeN^LqV7W>J$*wzz8B?P6+U3WdrdUfzS*{?*cmq
E040bd#{d8T

delta 21
ccmZoux}d;0*)P;LAd->6ZKAW=#+{4;089!7ssI20


From b031e4a317e114d3dfc70b15581973129e3e2836 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 15:39:32 +0530
Subject: [PATCH 24/30] Convert sst_nino3 to NumPy compressed archive

---
 pywt/data/{sst_nino3.npy => sst_nino3.npz} | Bin 64128 -> 64262 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)
 rename pywt/data/{sst_nino3.npy => sst_nino3.npz} (99%)

diff --git a/pywt/data/sst_nino3.npy b/pywt/data/sst_nino3.npz
similarity index 99%
rename from pywt/data/sst_nino3.npy
rename to pywt/data/sst_nino3.npz
index 822d2021b6bd1766d852c018414e54981003187e..60d1d5856ed91fba82c8eb8c0e75d45b01b06785 100644
GIT binary patch
delta 145
zcmZqp%G~yi*($)BnMIcY0u&icE2@?MLjeba2t!I@Nupj}K_w%D07Jtsh$<Mpq2ZTL
ofHxzPE;FirkUR);KurZv4U8ZXW?FzZD;tQ<2!v)pdKcJa0A_k2umAu6

delta 10
RcmZqs#@z6gd81XsF90091zi9D


From ae1d4704c85d0f085cb14fbe8af18999485e5c89 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 16:45:16 +0530
Subject: [PATCH 25/30] Properly skip tests for WASM and wherever threading
 isn't available

---
 pywt/_pytest.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pywt/_pytest.py b/pywt/_pytest.py
index c34664eee..7685bea71 100644
--- a/pywt/_pytest.py
+++ b/pywt/_pytest.py
@@ -61,7 +61,7 @@
     matlab_result_dict_dwt = np.load(matlab_data_file_dwt)
 
 uses_futures = pytest.mark.skipif(
-    True, reason='futures not available')
+    not futures_available or IS_WASM, reason='futures not available')
     # not futures_available, reason='futures not available')
 uses_matlab = pytest.mark.skipif(
     matlab_missing, reason='pymatbridge and/or Matlab not available')

From fa3a852e6b61b65a7cdf5bd12c41ac9fad919111 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 16:52:59 +0530
Subject: [PATCH 26/30] Clean up conditions to be met to skip tests

---
 pywt/_pytest.py               |  3 ++-
 pywt/tests/test_concurrent.py | 10 +++++-----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/pywt/_pytest.py b/pywt/_pytest.py
index 7685bea71..af4d60cf8 100644
--- a/pywt/_pytest.py
+++ b/pywt/_pytest.py
@@ -61,7 +61,8 @@
     matlab_result_dict_dwt = np.load(matlab_data_file_dwt)
 
 uses_futures = pytest.mark.skipif(
-    not futures_available or IS_WASM, reason='futures not available')
+    not futures_available or IS_WASM,
+    reason='futures is not available, or running via Pyodide/WASM.')
     # not futures_available, reason='futures not available')
 uses_matlab = pytest.mark.skipif(
     matlab_missing, reason='pymatbridge and/or Matlab not available')
diff --git a/pywt/tests/test_concurrent.py b/pywt/tests/test_concurrent.py
index bdc719598..529b245a7 100644
--- a/pywt/tests/test_concurrent.py
+++ b/pywt/tests/test_concurrent.py
@@ -12,7 +12,7 @@
 import pytest
 from numpy.testing import assert_array_equal, assert_allclose
 
-from pywt._pytest import IS_WASM, futures, max_workers
+from pywt._pytest import uses_futures, futures, max_workers
 import pywt
 
 
@@ -34,7 +34,7 @@ def _assert_all_coeffs_equal(coefs1, coefs2):
     return True
 
 
-@pytest.mark.skipif(IS_WASM, reason="no futures support in Pyodide")
+@uses_futures
 def test_concurrent_swt():
     # tests error-free concurrent operation (see gh-288)
     # swt on 1D data calls the Cython swt
@@ -55,7 +55,7 @@ def test_concurrent_swt():
         _assert_all_coeffs_equal(expected_result, results[-1])
 
 
-@pytest.mark.skipif(IS_WASM, reason="no futures support in Pyodide")
+@uses_futures
 def test_concurrent_wavedec():
     # wavedec on 1D data calls the Cython dwt_single
     # other cases call dwt_axis
@@ -72,7 +72,7 @@ def test_concurrent_wavedec():
         _assert_all_coeffs_equal(expected_result, results[-1])
 
 
-@pytest.mark.skipif(IS_WASM, reason="no futures support in Pyodide")
+@uses_futures
 def test_concurrent_dwt():
     # dwt on 1D data calls the Cython dwt_single
     # other cases call dwt_axis
@@ -89,7 +89,7 @@ def test_concurrent_dwt():
         _assert_all_coeffs_equal([expected_result, ], [results[-1], ])
 
 
-@pytest.mark.skipif(IS_WASM, reason="no futures support in Pyodide")
+@uses_futures
 def test_concurrent_cwt():
     atol = rtol = 1e-14
     time, sst = pywt.data.nino()

From 0343b6db6094eca605fec2a97a217f1e2acf6fe3 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 16:59:33 +0530
Subject: [PATCH 27/30] Use better job name to reflect Pyodide build

---
 .github/workflows/emscripten.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
index 896b66091..b0c47ea18 100644
--- a/.github/workflows/emscripten.yml
+++ b/.github/workflows/emscripten.yml
@@ -19,6 +19,7 @@ env:
 
 jobs:
   build_wasm_emscripten:
+    name: Build PyWavelets for Pyodide
     runs-on: ubuntu-latest
     # Uncomment the following line to test changes on a fork
     # if: github.repository == 'PyWavelets/pywt'

From dedac169fef4d0a8a1dfe017d69179684aff50ae Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 17:04:57 +0530
Subject: [PATCH 28/30] Remove workflow run contexts, i.e., run on pushes and
 PRs

---
 .github/workflows/emscripten.yml | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
index b0c47ea18..fcc906b37 100644
--- a/.github/workflows/emscripten.yml
+++ b/.github/workflows/emscripten.yml
@@ -1,18 +1,14 @@
 name: Test Pyodide build for PyWavelets
 
-# TODO: uncomment after testing
 on:
   push:
-    # branches:
-    #   - master
-    #   - v1.**
+    branches:
+      - master
+      - v1.**
   pull_request:
-    # branches:
-      # - master
-      # - v1.**
-  workflow_dispatch:
-  schedule:
-    - cron: '0 3 * * *'
+    branches:
+      - master
+      - v1.**
 
 env:
   FORCE_COLOR: 3

From 7315b43187cd10dc7a712da947ca7e13337c9a2b Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 17:41:05 +0530
Subject: [PATCH 29/30] import `importlib.resources`, mark `/pywt/data/` as
 constant

---
 pywt/data/_readers.py | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/pywt/data/_readers.py b/pywt/data/_readers.py
index b6f378986..10105a691 100644
--- a/pywt/data/_readers.py
+++ b/pywt/data/_readers.py
@@ -1,10 +1,13 @@
 import functools
-import importlib
+import importlib.resources
 import os
 
 import numpy as np
 
 
+_DATADIR = importlib.resources.files('pywt.data')
+
+
 @functools.cache
 def ascent():
     """
@@ -39,8 +42,7 @@ def ascent():
     >>> plt.show() # doctest: +SKIP
 
     """
-    _datadir = importlib.resources.files('pywt.data')
-    with importlib.resources.as_file(_datadir.joinpath('ascent.npz')) as f:
+    with importlib.resources.as_file(_DATADIR.joinpath('ascent.npz')) as f:
         ascent = np.load(f)['data']
 
     return ascent
@@ -77,8 +79,7 @@ def aero():
     >>> plt.show() # doctest: +SKIP
 
     """
-    _datadir = importlib.resources.files('pywt.data')
-    with importlib.resources.as_file(_datadir.joinpath('aero.npz')) as f:
+    with importlib.resources.as_file(_DATADIR.joinpath('aero.npz')) as f:
         aero = np.load(f)['data']
 
     return aero
@@ -126,8 +127,7 @@ def camera():
     >>> plt.show() # doctest: +SKIP
 
     """
-    _datadir = importlib.resources.files('pywt.data')
-    with importlib.resources.as_file(_datadir.joinpath('camera.npz')) as f:
+    with importlib.resources.as_file(_DATADIR.joinpath('camera.npz')) as f:
         camera = np.load(f)['data']
 
     return camera
@@ -159,8 +159,7 @@ def ecg():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    _datadir = importlib.resources.files('pywt.data')
-    with importlib.resources.as_file(_datadir.joinpath('ecg.npz')) as f:
+    with importlib.resources.as_file(_DATADIR.joinpath('ecg.npz')) as f:
         ecg = np.load(f)['data']
 
     return ecg
@@ -198,8 +197,7 @@ def nino():
     [<matplotlib.lines.Line2D object at ...>]
     >>> plt.show() # doctest: +SKIP
     """
-    _datadir = importlib.resources.files('pywt.data')
-    with importlib.resources.as_file(_datadir.joinpath('sst_nino3.npz')) as f:
+    with importlib.resources.as_file(_DATADIR.joinpath('sst_nino3.npz')) as f:
         sst_csv = np.load(f)['data']
 
     # sst_csv = pd.read_csv("http://www.cpc.ncep.noaa.gov/data/indices/ersst4.nino.mth.81-10.ascii", sep=' ', skipinitialspace=True)

From 4a962c9e78e0f581c777b79734e9592d973ba918 Mon Sep 17 00:00:00 2001
From: Agriya Khetarpal <74401230+agriyakhetarpal@users.noreply.github.com>
Date: Thu, 22 Feb 2024 19:41:48 +0530
Subject: [PATCH 30/30] Remove unneeded `@uses_futures` decorator

---
 pywt/tests/test_mra.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/pywt/tests/test_mra.py b/pywt/tests/test_mra.py
index af8bdd31d..055ac1fa7 100644
--- a/pywt/tests/test_mra.py
+++ b/pywt/tests/test_mra.py
@@ -6,7 +6,6 @@
 
 import pywt
 from pywt import data
-from pywt._pytest import uses_futures
 
 # tolerances used in accuracy comparisons
 tol_single = 1e-6
@@ -18,7 +17,6 @@
 # 1d mra tests
 ####
 
-@uses_futures
 @pytest.mark.parametrize('wavelet', ['db2', 'sym4', 'coif5'])
 @pytest.mark.parametrize('transform', ['dwt', 'swt'])
 @pytest.mark.parametrize('mode', pywt.Modes.modes)