[英]difficulty with Python
def myfunc(x):
y = x
y.append('How do I stop Python from modifying x here?')
return y
x = []
z = myfunc(x)
print(x)
You do: 你做:
y = x[:]
to make a copy of list x
. 制作清单x
的副本。
You need to copy X before you modify it, 在修改X之前需要复制X,
def myfunc(x):
y = list(x)
y.append('How do I stop Python from modifying x here?')
return y
x = []
z = myfunc(x)
print(x)
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