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Python Scope


Python Tutorial » Python Scope

A variable is only available from inside the region it is created called scope.

Local Scope
A variable created inside a function can only be used inside that function.
Example:
def my_func():
  y = 2021
  print(y)

myfunc()


Output: 2021


Function Inside Function


Variable y is not available outside the function, but it is available for any function inside the function

Example:
def my_func_name():
  y = 5422
  def my_inner_func():
    print(y)
  my_inner_func()

my_func_name()

Output:


Global Keyword

The "global' (without quotes) keyword makes the variable global.
In the next program, three different variables "y" are defined in separate namespaces and accessed accordingly.

Example:

def my_outer_function():
     global y
     y = 220

    def my_inner_function():
      global y
      y = 230
      print('y =', y)

    my_inner_function()
    print('y =', y)

y = 210
my_outer_function()
print('y =', y)

Output:
y = 230
y = 230
y = 230




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Python Scope - python

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Free CSS HTML Menu
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