Python string swapcase() usage and example

Python string methods

The swapcase() method of the string converts all uppercase characters in the given string to lowercase and all lowercase characters to uppercase, and then returns the converted string.

The format of the swapcase() method is:

string.swapcase()

Note:It may not be string.swapcase().swapcase() == string

String swapcase() parameters

The swapcase() method does not take any parameters.

String swapcase() return value

The swapcase() method returns a string in which all uppercase characters are converted to lowercase, and all lowercase characters are converted to uppercase.

Example1: Use swapcase() to switch lowercase to uppercase and vice versa

# String example
string = "THIS　SHOULD　ALL　BE　LOWERCASE."
print(string.swapcase())
string = "this　should　all　be　uppercase."
print(string.swapcase())
string = "ThIs　ShOuLd　Be　MiXeD　cAsEd."
print(string.swapcase())

When running the program, the output is:

this　should　all　be　lowercase.
THIS　SHOULD　ALL　BE　UPPERCASE.
tHiS　sHoUlD　bE　mIxEd　CaSeD.

Note:If you only want to convert a string to lowercase, please uselower(). Similarly, if you want to convert a string to uppercase only, please useupper().

Python string methods