The upper() method converts all lowercase characters in a string into uppercase characters and returns it.
Example
Syntax of String upper()
The syntax of upper() method is:
string.upper()
upper() Parameters
upper() method doesn't take any parameters.
upper() Return Value
upper() method returns the uppercase string from the given string. It converts all lowercase characters to uppercase.
If no lowercase characters exist, it returns the original string.
Example 1: Convert a string to uppercase
Output
THIS SHOULD BE UPPERCASE! TH!S SH0ULD B3 UPP3RCAS3!
Example 2: How upper() is used in a program?
Output
The strings are same.
Note: If you want to convert to lowercase string, use lower(). You can also use swapcase() to swap between lowercase to uppercase.