Python copy variable

>>> import copy
>>> a = 0
>>> b = 2
>>> a = copy.copy(b)
>>> b += 1
>>> a
2
>>> b
3

Copy constructor python

class Foo:
    def __init__(self, orig=None):
        if orig is None:
            self.non_copy_constructor()
        else:
            self.copy_constructor(orig)
    def non_copy_constructor(self):
        # do the non-copy constructor stuff
    def copy_constructor(self, orig):
        # do the copy constructor

a=Foo()  # this will call the non-copy constructor
b=Foo(a) # this will call the copy constructor

Source: stackoverflow.com

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