在Python中操作字符串之startswith()方法的使用
Jun 10, 2016 pm 03:12 PM
python
startswith()方法检查字符串是否以str开始，任选限制匹配与给定索引的开始和结束。
语法
以下是startswith()方法的语法：
str.startswith(str, beg=0,end=len(string));
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参数
- str -- 这是要检查的字符串。
- beg -- 这是可选的参数设置匹配边界的初始索引。
- end -- 这是可选的参数设置匹配边界的结束索引。
返回值
如果找到匹配的字符串此方法返回true，否则为false。
例子
下面的例子显示了startswith()方法的使用。
#!/usr/bin/python str = "this is string example....wow!!!"; print str.startswith( 'this' ); print str.startswith( 'is', 2, 4 ); print str.startswith( 'this', 2, 4 );
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当我们运行上面的程序，它会产生以下结果：
True True False
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