Flyttet python-kurset ut av samlerepoet

notes/05_2_usefulFunctions.py

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+"""
+Some useful functions that should be mentioned
+Most are used on lists
+"""
+
+# zip
+for a, b in zip([1, 2, 3, 4], [3, 2, 1]):
+    print("Found {} and {}, added it is {}.".format(a, b, a+b))
+
+# map
+print()
+mapped = map(lambda x: 2 * x, [1, 2, 0])
+print(mapped)
+print(list(mapped))
+
+print()
+mapped = map(lambda a, b: a - b, [5, 3, 0], [2, 3, -5, 8])
+print(mapped)
+print(list(mapped))
+
+# filter
+print()
+filtered = filter(lambda x: x == 3 or x is not None and x % 3 == 1, [3, 4, None, 11, 12, 13])
+print(filtered)
+print(list(filtered))
+
+# div. normal utils
+print()
+print(len([1, 2, 3]))
+print(max([1, 2, 3]))
+print(min([1, 2, 3]))
+print(sorted([1, 3, 2]))