-不定期更新，问就是没啥用
1.base64自定义编码表解码
import base64 yourTable=""
yourstr=""
d=base64.b64decode(yourstr.translate(str.maketrans(yourTable,"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")))
s=str(base64.b64encode(yourstr.encode())).translate(str.maketrans("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",yourTable))