![Object of type nonetype has no len. 'int' object does not support item assignment. typeerror: 'types.genericalias' object does not support item assignment. typeerror: 'str' does not support item assignment on line 37. a[-2]='1' typeerror: 'str' object does not support item assignment.](https://avatars.mds.yandex.net/i?id=2a37f4301ead060ec2d72f935eb9cf60_l-10653212-images-thumbs&n=13 "'int' object does not support item assignment. typeerror: 'types.genericalias' object does not support item assignment. typeerror: 'str' does not support item assignment on line 37. a[-2]='1' typeerror: 'str' object does not support item assignment.")
Object of type nonetype has no len. 'int' object does not support item assignment. typeerror: 'types.genericalias' object does not support item assignment. typeerror: 'str' does not support item assignment on line 37. a[-2]='1' typeerror: 'str' object does not support item assignment.