数据类型:
字符串:
定义:在单引号、双引号、三引号内,由一串字符组成。
name=‘egon‘
需要掌握:
1.索引取值(正向取,反向取) :只能取
2.切片(顾头不顾尾,步长)
3.长度len
4.成员运算in和not in
5.移除空白strip
6.切分split
7.循环
需要掌握的操作:
1.strip,lstrip,rstrip
2.lower,upper
3.startwith,endwith
4.format的三种玩法
5.split,rsplit
6.join
7.replace
8.isdigit
name = ‘ egon ‘ p = ‘**zzx***‘ print(name.lstrip(‘ ‘)) print(p.strip(‘*‘)) print(p.lstrip(‘*‘)) print(p.rstrip(‘*‘)) 运行结果: egon zzx zzx*** **zzx
#lower upper name = ‘ eGoN ‘ print(name.lower()) print(name.upper()) 运行结果: egon EGON
#startwith,endwith name = ‘ eGoN ‘ print(name.startswith(‘ ‘)) print(name.endswith(‘N‘)) 运行结果: True False
#format 格式化输出 # res = ‘{} {} {}‘.format(‘egon‘,‘18‘,‘male‘) # res = ‘{1} {0} {1}‘.format(‘egon‘,‘18‘,‘male‘) res = ‘name:{name}\nsex:{sex}\nage:{age}‘.format(sex = ‘male‘,age = 18,name = ‘egon‘) print(res) 运行结果: egon 18 male 18 egon 18 name:egon sex:male age:18
原文地址:https://www.cnblogs.com/godseven/p/9095471.html
时间: 2024-10-02 16:34:00