Added files for Ecoanova's Python 3 course.

Ecoanova/Introduccion a Python 3/Ejemplos/functional.py

@@ -0,0 +1,31 @@
+################################
+# Lambda (anonymous) functions #
+################################
+
+f = lambda x, y: x + y
+print(f(1, 2))
+print()
+
+##########################
+# Higher order functions #
+##########################
+
+# Map: Applies a function to many lists. Returns a generator.
+
+for i in map(lambda x: x*x, [1, 2, 3, 4, 5, 6]):
+    print(i)
+print()
+
+for i in map(f, [1, 2, 3, 4, 5, 6], [2, 3, 4, 5, 6, 7]):
+    print(i)
+print()
+
+# Custom higher order function
+
+def hof(function = lambda x: x, *args):
+    for a in args:
+        print(function(a))
+
+hof(lambda s: s.upper(), "a", "b", "c")
+print()
+hof(lambda x: x is None, 1, ["a", "b"], None, {})