Chapter 6: Functions

• 6.1 Functions
• 6.2 6.3 Function Return Values & Unit Testing
• 6.4 6.5 Variables and Parameters are Local
• 6.8 Using a main Function

6.6 Functions calling other Functions

1   def square(x):
2       y = x * x
3       return y
4   
5   def sum_of_squares(x, y, z):
6       a = square(x)
7       b = square(y)
8       c = square(z)
9   
10      return a + b + c
11  
12  a = -5
13  b = 2
14  c = 10
15  result = sum_of_squares(a, b, c)
16  print(result)