1 upper lower
大小写转换,字符串中所有字母全部转
strData = "We aRe12 family!"
strNew = strData.upper() ,所有字母全部大写
strNew = strData.lower() ,所有字母全部小写
2 title
strData = "We aRe12 family!"
strNew = strData.title()
print(strNew)
#输出---- We Are12 Family! 单词首字母大写,其他全部转成小写
strData = "We aRe12 fam12ily!"
strNew = strData.title()
print(strNew)
#输出---- We Are12 Fam12Ily! 单词,只要该字母前是非字母,就会转换
3 capitalize
strData = "We aRe12 fam12ily!"
strNew = strData.capitalize()
print(strNew)
#输出---- We are12 fam12ily! 字符串首字母大写(如首位不是字母,保证不变),其余全部小写
4 swapcase
strData = "We aRe12 fam12ily!"
strNew = strData.swapcase()
print(strNew)
#输出---- wE ArE12 FAM12ILY! 大小写切换