Python string title() usage and examples

Python string methods

The title() method returns a string where all words start with a capital letter and the rest are lowercase (see istitle()).

The syntax of title() is:

str.title()

title() parameters

The title() method does not take any parameters.

title() return value

The title() method returns the title case version of a string. This means that the first character of each word is capitalized (if the first character is a letter).

Example1：How does Python title() work?

text = 'My favorite number is　25'.
print(text.title())
text = '234　k3l2　*43　fun'
print(text.title())

When running this program, the output is:

My Favorite Number Is　25.
234　K3L2　*43　Fun

Example2：Title with apostrophe

text = "He's an engineer, isn't he?"
print(text.title())

When running this program, the output is:

He'S An Engineer, Isn'T He?

When running this program, the output is:

He'S An Engineer, Isn'T He?

title() will also capitalize the first letter after the apostrophe.

To solve this problem, you can use regular expressions as follows:

Example3：Use regular expressions to capitalize the first letter of each word in the title

import re
def titlecase(s):
　　　　return re.sub(r"[A-Za-z]+('[A-Za-z]+)?",
　　　　　lambda mo: mo.group(0)[0].upper(),　+
　　　　　mo.group(0)[1:].lower(),
　　　　　s)
text = "He's an engineer, isn't he?"
print(titlecase(text))

When running this program, the output is:

He's an Engineer, Isn't He?

Python string methods