What better way to get around the “static variables” in Python?

Question

It seems that in Python, to declare a variable in a class, it is static (keeps its value in the next instances). What better way to get around this problem?

clas         


        

Answer 1

Just leave the declaration out. If you want to provide default values for the variables, initialize them in the __init__ method instead.

class Foo(object):
    def __init__(self):
        self.number = 0

    def set(self):
        self.number = 1

>>> foo = Foo()
>>> foo.number
0
>>> foo.set()
>>> foo.number
1
>>> new_foo = Foo()
>>> new_foo.number
0

Edit: replaced last line of the above snippet; it used to read 1 although it was just a typo on my side. Seems like it has caused quite a bit of confusion while I was away.