这是实际发生的情况：
global_list = []
def defineAList():
local_list = ['1','2','3']
print "For checking purposes: in defineAList, list is", local_list
return local_list
def useTheList(passed_list):
print "For checking purposes: in useTheList, list is", passed_list
def main():
# returned list is ignored
returned_list = defineAList()
# passed_list inside useTheList is set to global_list
useTheList(global_list)
main()
这就是你想要的：
def defineAList():
local_list = ['1','2','3']
print "For checking purposes: in defineAList, list is", local_list
return local_list
def useTheList(passed_list):
print "For checking purposes: in useTheList, list is", passed_list
def main():
# returned list is ignored
returned_list = defineAList()
# passed_list inside useTheList is set to what is returned from defineAList
useTheList(returned_list)
main()
您甚至可以跳过临时returned_list变量，并将返回值直接传递给useTheList：
def main():
# passed_list inside useTheList is set to what is returned from defineAList
useTheList(defineAList())
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