update slides

python/examples/functional/create_dict_using_zip.py

@@ -1,6 +1,10 @@
 names = ['Jan', 'Feb', 'Mar', 'Apr']
 days =  [31, 28, 31, 30]
 
+zipped = zip(names, days)
+print(zipped)
+print(list(zipped))
+
 zipped = zip(names, days)
 month = dict(zipped)
 print(month)

python/examples/functional/map.py

@@ -5,5 +5,8 @@ def double(n):
 
 double_numbers = map(double, numbers)
 print(double_numbers)   # <map object at 0x7f8eb2d849e8>
-for num in double_numbers:
-    print(num)
+#for num in double_numbers:
+#    print(num)
+
+dbl = list(double_numbers)
+print(dbl)

python/examples/functional/read_lines_without_newlines.py

@@ -8,5 +8,26 @@
 with open(filename) as fh:
     rows = map(lambda s: s.rstrip("\n"), fh.readlines())
 
+print("SIZE:", sys.getsizeof(rows))
+
 for row in rows:
     print(row)
+
+
+with open(filename) as fh:
+    rows = map(lambda s: s.rstrip("\n"), fh)
+    print("SIZE:", sys.getsizeof(rows))
+
+    for row in rows:
+        print(row)
+
+
+
+#with open(filename) as fh:
+#    #for row in fh:
+#    #    ...
+#    #rows = map(lambda s: s.rstrip("\n"), fh.readlines())
+#    rows = map(lambda s: s.rstrip("\n"), fh)
+#
+#    for row in rows:
+#        print(row)