Python string | capwords() method

In Python, string capwords() method is used to capitalize all the words in the string using split() method. 

Syntax: string.capwords(string, sep=None) 
Return Value: Returns a formatted string after above operations.

Split the argument into words using split, capitalize each word using capitalize, and join the capitalized words using join. If the optional second argument sep is absent or None, runs of whitespace characters are replaced by a single space and leading and trailing whitespace are removed, otherwise sep is used to split and join the words.
Code #1: If sep parameter is left None. 

Python3

# imports string module
import string

sentence = 'Python is one of the best programming languages.'

# sep parameter is left None
formatted = string.capwords(sentence, sep = None)

print(formatted)

Output:

Python Is One Of The Best Programming Languages.

Code #2: When sep is not None.

Python3

# imports string module
import string

sentence = 'Python is one of the best programming languages.'

# sep parameter is 'g'
formatted = string.capwords(sentence, sep = 'g')
print('When sep = "g"', formatted)

# sep parameter is 'o'
formatted = string.capwords(sentence, sep = 'o')
print('When sep = "o"', formatted)

Output:

When sep = "g" Python is one of the best progRamming langUagEs.
When sep = "o" PythoN is oNe oF the best proGramming languages.