yuttie · October 17, 2016 06:38
diff --git a/counter_by_closure.py b/counter_by_closure.py
 def make_counter(init):
    count = [init]
    def f():
        count[0] += 1
        return count[0] - 1
    return f

 c = make_counter(0)
 c()
diff --git a/counter_by_closure_nonlocal.py b/counter_by_closure_nonlocal.py
 def make_counter(init):
    count = init
    def f():
        nonlocal count
        count += 1
        return count - 1
    return f

 c = make_counter(0)
 c()
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