Python基础 字符串方法

1、字符串首字母大写

i = "shulei_xiaoxin"
S = i.capitalize()
print(S)
Shulei_xiaoxin

2、字符串全部大写或小写

i = "shuLEI_XIAOxin"
S = i.upper()
S1 = i.lower()
print(S)
print(S1)

SHULEI_XIAOXIN
shulei_xiaoxin

3、不区分大小写验证码

i = "shuLEI_XIAOxin"
VER_CODE = input("请输入验证码，不区分大小写:")

if i.upper() == VER_CODE.upper():
    print("验证成功，欢迎登录～～～")
else:
    print("验证不成功，欢迎下次登录～～")

4、大小写反转

i = "shuLEI_XIAOxin"
S = i.swapcase()
print(S)
SHUlei_xiaoXIN

5、首字符及特殊字符、数据后的字符大写

i = "shuLEI**_XIAO11234xi3n"
S = i.title()
print(S)
Shulei**_Xiao11234Xi3N