基础操作字符串如下:
In [10]: sStr="Action {speak}\t louder than {words}"
首字母大写
In [12]: print(sStr.capitalize())
Action {speak} louder than {words}
查找字符,下标从 0 开始:
In [13]: print(sStr.index('louder'))
16
In [14]: print(sStr.index('c'))
1
字符串切片操作,通过find:
In [38]: print(sStr[sStr.find("th"):])
than {words}
清除字符串两端字符:
In [33]: print("\r \r\r\r \n Action Speack".strip("\r\n\t "))
Action Speack
是否是数字:
In [26]: print("123".isdigit())
True
从左往右填充字符:
In [24]: print(sStr.ljust(100,"*"))
Action {speak} louder than {words}********************************************
*********************
以什么字符结尾:
In [23]: print("action speak louder".endswith("der"))
True
列表连接字符串:
In [18]: list=["action","speak","louder"]
In [19]: print(' '.join(list))
action speak louder
tab键扩展:
In [15]: print(sStr.expandtabs(50))
Action {speak} louder than {words}
In [16]: print(sStr.expandtabs(tabsize=50))
Action {speak} louder than {words}
查看某个字符或者sub字符串在字符串出现的次数:
In [43]: print("str.count",sStr.count('o'))
str.count 3
如果字符串至少有一个字符并且所有字符都是字母则返回 True, 否则返回 False
In [44]: print(sStr.isalpha())
False
In [45]: print("abc".isalpha())
True