python字符串相关操作
1、判断字符串是否以某个字符或者字符串开头:
1 >>> c="as_as_ddd_Fge_f" 2 >>> print c.startswith('f') 3 False 4 >>> print c.startswith('as') 5 True 6 >>> print c.startswith('a') 7 True 8 >>> print c.startswith('as_') 9 True
2、判断字符串是否以某个字符或者字符串结束:
1 >>> c="as_as_ddd_Fge_f" 2 >>> print c.endswith('f') 3 True 4 >>> print c.endswith('fs') 5 False 6 >>> print c.endswith('_f') 7 True
3、判断字符串中某个字符或者字符串出现的次数:
1 >>> c="as_as_ddd_Fge_f" 2 >>> print c.count('d') 3 3 4 >>> print c.count('_d') 5 1 6 >>> print c.count('_') 7 4 8 >>> print c.count('1') 9 0
4、判断某个字符串、列表、是否含有某个字符或字符串:
1 >>> c="as_as_ddd_Fge_f" 2 >>> print "a" in c 3 True 4 >>> print "as" in c 5 True 6 >>> print "1" in c 7 False 8 >>> c=['q','b','2'] 9 >>> print "q" in c 10 True 11 >>> print "qq" in c 12 False 13 >>> print "3" in c 14 False 15 >>> print "2" in c 16 True