Python string methods for case conversion

Few important python string methods for case conversion.

swapcase()
Return a copy of the string with uppercase characters converted to lowercase and vice versa.

upper()
Return a copy of the string converted to uppercase.

title()
Return a titlecased version of the string: words start with uppercase characters, all remaining cased characters are lowercase.

lower()
Return a copy of the string converted to lowercase.

capitalize( )
Return a copy of the string with only its first character capitalized.

On python prompt:

>>> s='www.ExAmple.cOM'
>>> s
'www.ExAmple.cOM'
>>> s.swapcase()
'WWW.eXaMPLE.Com'
>>> s.upper()
'WWW.EXAMPLE.COM'
>>> s.lower()
'www.example.com'
>>> s.title()
'Www.Example.Com'
>>> s.capitalize()
'Www.example.com'
>>> st="This is the Best"
>>> st.capitalize()
'This is the best'
>>> st.title()
'This Is The Best'