闭包
time = 0
def insert_time(min):
time = time + min
return time
print(insert_time(2))
print(insert_time(10))UnboundLocalError: local variable 'time' referenced before assignmenttime = 0
def insert_time(min):
global time
time = time + min
return time
print(insert_time(2))
print(insert_time(10))
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