首先是字符串的由大写转换为小写:
>>> s1 = "LaRrY"
>>> s1.lower()
'larry'
接下来是字符串由小写转换为大写:
>>> s2 = "larry"
>>> print(s2.upper())
LARRY
最后是字符串的首字母有小写转换为大写:
>>> s1 = "laRRy"
>>> print(s1.capitalize())
Larry
只有首字母由小写变为大写,其余全部为小写
首先是字符串的由大写转换为小写:
>>> s1 = "LaRrY"
>>> s1.lower()
'larry'
接下来是字符串由小写转换为大写:
>>> s2 = "larry"
>>> print(s2.upper())
LARRY
最后是字符串的首字母有小写转换为大写:
>>> s1 = "laRRy"
>>> print(s1.capitalize())
Larry
只有首字母由小写变为大写,其余全部为小写