Note thatisnumeric()does not handle negative numbers or decimal points. In order to check for negative numbers, we can use the-(minus) character along withisnumeric(). For example: s6 = '-1234' print(s6[0] == '-' and s6[1:].isnumeric()) # True ...
从形式上看,十进制字符是Unicode通用类别 "Nd "中的一个字符。 The Python documentation notes the difference between the three methods. str.isdigit Return true if all characters in the string are digits and there is at least one character, false otherwise. Digits include decimal characters and digit...
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