img1 = [12, 34, 56, 78]
img2 = [1, 2, 3, 4]
def displ():
print(img1)
def modi():
img1 = img2
modi()
displ()
运行结果是 [12, 34, 56, 78],为什么 img1 没有改变
img1 = [12, 34, 56, 78]
img2 = [1, 2, 3, 4]
def displ():
print(img1)
def modi():
img1 = img2
modi()
displ()
运行结果是 [12, 34, 56, 78],为什么 img1 没有改变