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Lära Nested Functions in Python: Scope and Accessibility | Understanding Variable Scope in Python
Intermediate Python Techniques

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Nested Functions in Python: Scope and Accessibility

This topic will not only help understand the nonlocal scope but also closures and decorators.

Functions are first-class citizens in Python. They can be:

  • Passed as arguments to functions;
  • Returned from functions;
  • Modified;
  • Assigned to variables.

Let's explore some examples:

python
def outer_function(...):
...
def inner_function(...):
...
return ...

In programming, a nested function is a function that is defined inside another function.

def count_percent(num1, num2, num3):
def inner(num):
return num * 30 / 100
return (inner(num1), inner(num2), inner(num3))

print(count_percent(700, 300, 1000))
123456
def count_percent(num1, num2, num3): def inner(num): return num * 30 / 100 return (inner(num1), inner(num2), inner(num3)) print(count_percent(700, 300, 1000))
copy

Useful if you want to perform a complex task multiple times within another function without repeating code.

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Avsnitt 4. Kapitel 4
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