Python 字串物件操作方法

s = ' Hello, World! This is a python string. \n\n'
• s.strip() -> 'Hello, World! This is a python string.' 
• s.split() -> ['Hello,', 'World!', 'This', 'is', 'a', 'python', 'string.']
• atoi(), atof() 
• s.find('a') -> 25, s.find('P') -> -1 
• s.index('a') -> 25, s.index('P') -> ValueError: substring not found