Florian Lindner a écrit :
> Hello,
> does python have static variables? I mean function-local variables that keep
> their state between invocations of the function.
Not directly. But there are ways to have similar behaviour:
1/ the mutable default argument hack:
def fun(arg, _hidden_state=[0]):
_hidden_state[0] += arg
return _hidden_static[0] * 2
2/ using OO:
class Fun(object):
def __init__(self, static=0):
self._state = static
def __call__(self, arg):
self._state += arg
return self._state * 2
fun = Fun()
HTH
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