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Python - Note of Variable Scope

Watched an awesome video about python scope: https://www.youtube.com/watch?v=QVdf0LgmICw

My clear summery of the video:

''' LEGB:
Local, Enclosing, Global, Built-in
'''

''' Build-in variables '''
# import builtins
# print(dir(builtins))

x = 'global x'


def outer():
    x = 'outer x'

    def inner():
        x = 'inner x'