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Python String capitalize() Function

String in Python has built-in functions for almost every action to be performed on a string. Python String capitalize() function is used to convert only the first character to the uppercase letter, rest all characters are lowercase.

Key Points :

  • Return Type: String
  • Parametric Values: No parameters can be parsed onto capitalize() function.
  • Converts only the first character of a string to uppercase.
  • It does not modify the original string. The modified string is saved with a new variable name.

Example: Given String – “Have a Nice Day” Or “Have A NICE DAY” Or “have a nice day” Or “Have a nice day”

Capitalized String: “Have a nice day” (for all the above-given strings)


Syntax :

str_name.capitalize()

str_name here refers to the string to be capitalized. And, capitalize() is inbuilt string function in python.

Basic Example

str_name = "hi there!"
new_str = str_name.capitalize()
print('The New Capitalized String is ',new_str)

Output: Hi there!


Different Cases :

Examples of different cases are given below –

Case 1: All the characters in a string are uppercase

str_name = "HI THERE"
new_str = str_name.capitalize()
print('The New Capitalized String is ',new_str)

Output: Hi there!

Case 2: The first alphabet of every word in a string containing multiple words is uppercase

str_name = "Hi There!"
new_str = str_name.capitalize()
print('The New Capitalized String is ',new_str)

Output: Hi there!

Case 3: Randomly any character in a string is uppercase

str_name = "hI tHeRE!"
new_str = str_name.capitalize()
print('The New Capitalized String is ',new_str)

Output: Hi there!

Case 4: Non-alphanumeric or Numeric first character

str_name = "! hi there"
new_str = str_name.capitalize()
print('The New Capitalized String is ',new_str)

Output: ! hi there!


References

Python Functions