Adding source code files for Chapter 6

Chapter6/innerfunction/inner1.py

@@ -0,0 +1,9 @@
+#inner1.py
+
+def outer_hello():
+    print ("Hello from outer function")
+    def inner_hello():
+        print("Hello from inner function")
+    inner_hello()
+
+outer_hello()

Chapter6/innerfunction/inner2.py

@@ -0,0 +1,14 @@
+#inner2.py
+
+def power_gen_factory(base):
+    def power_calc(exponent):
+        return base**exponent
+    return power_calc
+
+power_calc_2 = power_gen_factory(2)
+power_calc_3 = power_gen_factory(3)
+print(power_calc_2(2))
+print(power_calc_2(3))
+print(power_calc_3(2))
+print(power_calc_3(4))
+