test of python default argument definition and the results

default_argument.py

def func(x=[]):
    x.append(1)
    return x

print(func())

print(func())

print(func([2]))

print(func())

# above code show that default parameter is defined exactly once when function in defined
# x the default parameter still exists, but is unused if a parameter is given to the function
# https://img.leroscapital.com/python-default-parameter-definition.png