Functions in Python – Calling Functions in Other Functions

Here’s another article in the Functions in Python series. Today we’ll be talking about calling functions in other functions. If you haven’t read the previous parts yet, feel free to do so. Here they are:

1) Introduction to Functions

2) Functions with Parameters

3) The return Statement

4) Mandatory Parameters

5) Optional Parameters

6) Mutable Optional Parameters

7) Keyword Arguments

8) Arbitrary Number of Positional Parameters

9) Arbitrary Number of Keyword Parameters

10) Arbitrary Number of Both Positional and Keyword Parameters

11) Nested Functions

We can call a function inside another function. Let’s define 2 simple functions:

def trim_string(text, length):
    if len(text) > length:
        return text[:length]
    else:
        return text

def repeat_trimmed_string(text, length, repetitions):
    trimmed_text = trim_string(text, length) + " "
    return trimmed_text * repetitions

print(repeat_trimmed_string("interesting", 5, 7))

The second function, repeat_trimmed_string, calls the first function in its body. Here’s the result:

inter inter inter inter inter inter inter