Python 字符串处理

1 单引号包围的字符串中可以包含双引号，同样，双引号包围的字符串中可以包含单引号

2 三个引号包围的字符串中既可以包含单引号，也可以包含双引号

message = "Father's Day"
print(message)

message = 'Mother"s Day'
print(message)

message = '''有"双引号"也有'单引号'哦'''
print(message)

3 首字母大写

message = "father's day"
print(message.title())

4 全部大写

message = "Father's Day"
print(message.upper())

5 全部小写

message = "Father's Day"
print(message.lower())

6 拼接字符串

message = "Father's Day"
print(message + " Happy" + "!")

7 制表符(\t)，换行符(\n)

message = "{\n\tUser:\n\t\tname:tom\n}"
print(message)

8 删除空白

message = "  test. "
print(message.lstrip())
print(message.rstrip())
print(message.strip())

9 转换成字符串

message = 3
print(str(message) + " years ago")