正则表达式检索与替换

import re

phone = "2004-959-559 # 这是一个电话号码"


num = re.sub(r'#.*$', "", phone)
print("电话号码:", num)

# 移除非数字的内容
num = re.sub(r'D', "", phone)
print("电话号码:", num)


# 将匹配的数字乘以2
def (matched):
    value = int(matched.group('value'))
    return str(value * 2)


s = 'A23G4HFD567'
print(re.sub('(?P<value>d+)', double, s))