Python String swapcase() Method

The swapcase() method returns a copy of the string with uppercase characters converted to lowercase and vice versa. Symbols and letters are ignored.

Syntax:

str.swapcase()

Parameters:

None.

Return Value:

Returns a string.

The following example demonstrates the swapcase() method.

>>> 'hello world'.swapcase()
'HELLO WORLD'
>>> 'Hello World'.swapcase()
'hELLO wORLD''
>>> 'HeLLo WoRld'.swapcase()
'hEllO wOrLD'

A string can contain a mix of upper and lower case characters. All cases will be reversed when swapcase() method is called.

The swapcase() method ignores symbols and numbers, as shown below.

>>> '#1 Harbor Side'.swapcase()
'#1 hARBOR sIDE'
>>> ''123456'.swapcase()
'123456'