python判断字符是否在字符串末尾
1.格式endswith(suffix,beg=0,end=len(string))
2、用途：endswith() 方法用于判断字符串是否以指定后缀结尾，如果以指定后缀结尾返回 True，否则返回 False。可选参数 "start" 与 "end" 为检索字符串的开始与结束位置。
3、实例：
str_ewth="my name is zhangsan!!"
print(str_ewth.endswith("!!"))#判断结束字符是否为!!True
print(str_ewth.endswith("nam",3,6))#"nam"是不是从第1个到第6个字符的最后一个字符True
print(str_ewth.endswith("me",4,6))#”m"是从第4个到第5个字符的最后一个。
#True, True, False
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