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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                | 字符 | 功能 | | --- | --- | | * | 匹配前一個字符出現0次或者無限次 | | + | 匹配錢一個字符出現1次或無限次 | | ? | 匹配前一個字符出現1次或者0次 | | {m} | 匹配前一個字符出現m次 | | {m,n} | 匹配前一個字符出現從m到n次 | 示例: ~~~ import re # 第一個字母為大寫,后面的小寫字符可有可無 ret = re.match('[A-Z][a-z]*', 'Hello python') print(ret.group()) # Hello # 第一個字母為大寫,后面的小寫字符可有可無 ret = re.match('[A-Z][a-z]+', 'Hello python') print(ret.group()) # Hello ret = re.match("[a-zA-Z0-9_]{6}","12a3g45678") print(ret.group()) # 12a3g4 ret = re.match("[a-zA-Z0-9_]{8,20}","1ad12f23s34455ff66") print(ret.group()) #1ad12f23s34455ff66 ~~~
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