What is string.istitle() in Python?

The istitle() method will check if a string is a title-casedThe first letter of each word is in uppercase other characters are in lowercase string. This method returns True if the string is title cased. Otherwise, it returns False. If the string is empty, then False is returned.

Syntax

string.istitle()

Return value

• True if the string is title-cased.
• False if the string is not title-cased or empty.

Example 1

string = "Test Test";
string.istitle(); # true

The string Test Test is a title-cased string because the first character of each word of the string is in uppercase, and the remaining characters are in lower case, so True is returned.

Example 2

string = "Test test"
string.istitle()  # False

The string Test test is not a title-cased string because the first character of the second word (test) is not in uppercase, so False is returned.

Example 3

string = "T"
string.istitle()  # True

The string T is considered title-case because it only has only one character, and that is an uppercase character.

Internally, the words of the string are separated with the regex [A-Za-z]+, meaning when a non-alphabetical character occurs in a string, the next part is considered as a separate word. For example, in the string “ABC12DEF,” ABC and DEF are considered as separate words.

Example 4

string = "1T"
string.istitle()  # True

The string above, 1T, is a title-cased string because in the string, “T” is considered a separate word. The T is title-case because the word T starts with an uppercase character.

Example 5

string = "1T2t"
string.istitle()  # False

The string above, 1T2t, is not title-cased because “T” and “t” are considered separate words. The T is title-case because the word T starts with uppercase character, but “t” is not title-cased because the word doesn’t start with an uppercase character.

Complete example