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Python String capitalize() Function

The String capitalize() method returns a copy of the string with its first character capitalized and the rest lowercased.

note

The method does not change the original string.

Syntax​

my_string.capitalize()

capitalize() Parameters​

Python String capitalize() function does not take any parameters.

capitalize() Return Value​

Python String capitalize() function returns a new string with the first character capitalized and the rest of the characters in lowercase.

Examples​

Example 1: Capitalize a String with capitalize() method​

The capitalize() method is used to convert the first character of the sentence string to uppercase and the other characters to lowercase.

For example:

my_str = 'tUtORIALReFErEnCe'
result = my_str.capitalize()
print(result) # Output: Tutorialreference

output

Tutorialreference

Example 2: Capitalize a String with Non-Alphabetic First Character​

If the string has first character that is non-alphabetic, the first character is kept unchanged while the rest of the string is changed to lowercase.

my_str = '123 Is A Number.'
result = my_str.capitalize()
print(result) # Output: 123 is a number.

output

123 is a number.

Example 3: capitalize() does Not Change the Original String​

The capitalize() method returns a new string and does not modify the original string.

For example:

my_str = 'tUtORIALReFErEnCe'
result = my_str.capitalize()

print(f"Before capitalize(): {my_str}") # Output: Before capitalize(): tUtORIALReFErEnCe
print(f"After capitalize(): {result}")  # Output: After capitalize(): Tutorialreference

output

Before capitalize(): tUtORIALReFErEnCe
After capitalize(): Tutorialreference

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