python 基础之深浅拷贝

深浅拷贝

?

1 2 3 4

s=[[1,2],'fgfgf','cx'] s3=s.copy() print(s) print(s3)

　　测试

?

1 2 3 4 5

D:\python\python.exe D:/untitled/dir/for.py [[1, 2], 'fgfgf', 'cx'] [[1, 2], 'fgfgf', 'cx']   Process finished with exit code 0

　　浅拷贝之修改

?

1 2 3 4 5 6

s=[[1,2],'fgfgf','cx'] s3=s.copy() print(s3) s3[1]='chhgghg' print(s) print(s3)

　　测试

?

1 2 3 4 5 6

D:\python\python.exe D:/untitled/dir/for.py [[1, 2], 'fgfgf', 'cx'] [[1, 2], 'fgfgf', 'cx'] [[1, 2], 'chhgghg', 'cx']   Process finished with exit code 0

　　浅拷贝之修改列表

?

1 2 3 4 5 6

s=[[1,2],'fgfgf','cx'] s3=s.copy() print(s3) s3[0][1]='chhgghg' print(s) print(s3)

　　测试

?

1 2 3 4 5 6

D:\python\python.exe D:/untitled/dir/for.py [[1, 2], 'fgfgf', 'cx'] [[1, 'chhgghg'], 'fgfgf', 'cx'] [[1, 'chhgghg'], 'fgfgf', 'cx']   Process finished with exit code 0

　　浅拷贝是复制一层

深拷贝

?

1 2 3 4 5 6 7

haha = ['cx',123,[15000,9000]] wit = copy.deepcopy(haha) wit[0] = 'cd' wit[1] = 6666 wit[2][1] = 1999 print(wit) print(haha)

　　测试

?

1 2 3 4 5 6

D:\python\python.exe D:/untitled/dir/for.py [[1, 2], 'fgfgf', 'cx'] [[1, 'chhgghg'], 'fgfgf', 'cx'] [[1, 'chhgghg'], 'fgfgf', 'cx'] ['cd', 6666, [15000, 1999]] ['cx', 123, [15000, 9000]]