Question

假设我有一个包含单词，整数及其组合的句子：

"This is a string with an integer 1 and a 2 and a 3 and a 1A69 and a 1B and a C3"

是否可以从包含字母和整数的单词中删除所有整数？即，我希望以上内容成为

"This is a string with an integer 1 and a 2 and a 3 and a A and a B and a C"

Answer 1

一个选项可能是删除前面的数字（看后面 ?<=语法）或跟随（使用 lookahead ?=语法）用信：

import re
s = "This is a string with an integer 1 and a 2 and a 3 and a 1A69 and a 1B and a C3"

re.sub(r'\d+(?=[a-zA-Z])|(?<=[a-zA-Z])\d+', '', s)
# 'This is a string with an integer 1 and a 2 and a 3 and a A and a B and a C'

Answer 2

或者，没有正则表达式：

def remove_digits(s):
    return ''.join([x for x in s if not x.isdigit()])

def is_combined(s):
    return any(x.isalpha() for x in s) and any(x.isdigit() for x in s)

' '.join([remove_digits(x) if is_combined(x) else x for x in test.split()])

从单词中删除数字

2 个答案: