Python字符串大小写转换拼接删除空白

str = "hello world!"print(str.title())Hello World!print(str.upper())HELLO WORLD!print(str.lower())hello world!

str1 = 'Hello'str2 = 'World'print(str1+str2)HelloWorldstr3 = str1+str2print(str3)HelloWorld

string.lstrip() #删除串首的空白string.rstrip() #删除串尾的空白string.strip() #删除左右量表的空白

str = ' Hello Beijing 'print(str.lstrip())print(str.rstrip())print(str.strip())

Hello Beijing  Hello BeijingHello Beijing