整数和整数的正则表达式？

对于正整数，请使用

r"(?<![-.])b[0-9]+b(?!.[0-9])"

说明：

(?<![-.])   # Assert that the previous character isn't a minus sign or a dot.b          # Anchor the match to the start of a number.[0-9]+      # Match a number.b          # Anchor the match to the end of the number.(?!.[0-9]) # Assert that no decimal part follows.

对于有符号/无符号整数，请使用

r"[+-]?(?<!.)b[0-9]+b(?!.[0-9])"

单词边界

b