Python String Title method
The String title() method in Python is used to convert the first character in each word to uppercase and the remaining characters to lowercase in the string and returns a new string.
Python String title() Method Syntax:
Syntax: str.title()
parameters: title() doesn’t accept any parameter.
Return: str, converted to title case
Python String title() Method Example:
Python3
print("geeks_for_geeks".title()) |
Output:
Geeks_For_Geeks
Example 1: Basic usages of Python String title() Method
Python
# conversion from mixed casestr1 = 'geeKs foR geEks'print(str1, 'converted to using title():', str1.title())# conversion from all lower casestr4 = 'geeks for geeks'.title()print(str4, 'converted to using title():', str4.title())# conversion from all UPPER CASEstr5 = 'WE ARE 1'.title()print(str5, 'converted to using title():', str5.title()) |
Output:
geeKs foR geEks converted to using title(): Geeks For Geeks Geeks For Geeks converted to using title(): Geeks For Geeks We Are 1 converted to using title(): We Are 1
Getting undesired results while using Python String title() Method
Example 1: title() method considers any non-alphabet as a word boundary.
Python3
string = "He's smarter."expected_string = "He's Smarter"print("Expected:", expected_string, ", Actual:", string.title()) |
Output:
Expected: He's Smarter , Actual: He'S Smarter.
Explanation: The ‘s’ after He’ is converted to Capital letter, because after ‘(apostrophe) string title() method considers the start of a new word, since s is the first letter after ‘(apostrophe), thus it makes ‘s’ as capital letter.
Example 2: Different word boundaries other than space, when using title() Method
Here, even though there are no spaces separated words, still Python String title() method converts the String title case considering ‘-‘(hyphen) as word boundaries.
Python3
string = "geeks-for-geeks"print(string, "converted using title():", string.title()) |
Output:
geeks-for-geeks converted using title(): Geeks-For-Geeks
Word around to unexpected behavior of String title() Method
Example 1: Using Regex to fix the unexpected behavior of Python String title() Method.
Python3
import redef to_title(string): regex = re.compile("[a-z]+('[a-z]+)?", re.I) return regex.sub(lambda grp: grp.group(0)[0].upper() + grp.group(0)[1:].lower(), string)print(to_title("I won't be working tomorrow.")) |
Output:
I Won't Be Working Tomorrow.
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