正则表达式 re

Posted 2021-03-02 sophia-985935365

# 正则  正则式针对字符串的操作
import re

s = ‘{"mobilephone": "${borrow_user}", "pwd": "${borrow_pwd}"}‘
d = {"mobilephone": "18511295864", "pwd": "123456"}
p = ‘${(.*?)}‘

# 查找一个
m = re.search(p, s)
print(m)              # <re.Match object; span=(17, 31), match=‘${borrow_user}‘>
g = m[1]
print(g)              # borrow_user

#查找所有
m_all = re.findall(p, s)
print(m_all)    # 返回列表  [‘borrow_user‘, ‘borrow_pwd‘]

# 查找并替换全部, 【count=1,就替换一次】
rep = ‘18511295864‘
m = re.sub(p, rep, s, count=1)
print(m)        # {"mobilephone": "18511295864", "pwd": "${borrow_pwd}"}