# const.py
PI = 3.14
def train():
print("PI:", PI)
train()
# area.py
from const import PI
def calc_round_area(radius):
return PI * (radius ** 2)
def calculate():
print("round area: ", calc_round_area(2))
calculate()
输出结果为
PI: 3.14
round area: 12.56
为什么在只调用了const中pi的情况下,const中的train函数也会被执行啊,不是没有调用它吗