In this tutorial, you will be able to learn what is Python to uppercase with the Python upper() method tutorial with examples.
Python language has lots of built-in methods that you can explore and apply to your program. One of these built-in methods is the uppercase in python (upper()) method.
This tutorial will walk you through the Python to uppercase method with example programs with output. You can also use the examples below and apply them in your Python programs to test how the method works.
Aside from that, we’ll provide a complete discussion about the uppercase method. It also adds a glimpse of knowledge about Python lowercase, swap case, list upper, and self upper methods.
Also read: Python break for loop with Examples
What is uppercase Python?
The uppercase method in Python is used in string manipulation. It changes all lowercase characters in a string to uppercase and returns the resultant string.
To check if every character in a string is uppercase or not, we can use the isupper() method. Both the Python uppercase and isupper() methods are beneficial for formatting case-sensitive data.
Example:
txt = ("pythonforfree")
print(txt.upper())Output:
PYTHONFORFREE
(Python upper() flowchart)
Syntax of String upper()
As seen in the given example above, the syntax of the Python upper() method is:
string.upper() upper() Parameters
The upper() method takes no parameters. However, this method is only applicable for strings and not for any kind of characters.
In some circumstances, the function skips other characters in a string (such as a number) and proceeds in converting the lowercase letters.
Example:
txt = "python1sfr33"
print(txt.upper())Output:
PYTHON1SFR33
upper() Return Value
The upper() method accepts a lowercase string and returns true if the string is in uppercase. If no lowercase characters exist, the method returns the original string.
Convert a String to Uppercase Example Program
Here’s a simple example of how we use the Python upper() method.
Example 1: Applying the upper() method to string.
# example string
string = "Python for Free"
# applying the upper() method
print(string.upper())Output:
PYTHON FOR FREE
Example 2: Applying the upper() method to string with numbers.
# example string with numbers
string = "Python 4 Fr33"
# applying the upper() method
print(string.upper())Output:
PYTHON 4 FR33
How upper() is used in a program?
There are various ways to use the upper method in our Python program.
First, we use the upper() method to convert messages (strings in Python) from lower cases to uppercases.
Example:
# example program that converts message from lowercase to uppercase
message = ("Good day! Welcome to PythonForFree.")
print(message.upper())Output:
GOOD DAY! WELCOME TO PYTHONFORFREE.
Explanation
In this example, the program simply transformed every lowercase character in the message into uppercase. While the characters that are already in uppercase remained as uppercase.
Next, we can use the upper() method with Python condition statements to compare messages (strings).
Example:
# example program with if-else condition
# declaration of messages
message1 = "Python For Free"
message2 = "python for free"
# applying if-else condition
if(message1.upper() == message2.upper()):
print("Both messages are in uppercase.")
else:
print("Only one of the messages are in uppercase.")Output:
Both messages are in uppercase.
Explanation
The given example declares two messages and compares them after converting them using the upper() method. This conversion is present within the if-else condition. Therefore, before the comparison of messages, the conversion takes place first.
Note: You can use uppercase Python with different built-in functions and statements in your program. Just follow the correct syntax of the method as well as the Python program to avoid errors.
You may also learn how to convert messages (string) from uppercase to lowercase through the Lowercase Python String tutorial.
How do you use uppercase in Python?
In Python, uppercase is the characteristic of a string or a character in capital form. Mostly, the uppercase is applied to letters in an alphabet.
To use Python uppercase in programs, programmers apply the upper() method. In contrast to uppercase, the programmers use the lower() method to produce strings in lowercase.
Swapcase in Python
The swapcase in Python is a method where you can swap lowercase strings into uppercases and vice versa. This swapcase() method can be of use for string objects with the string.swapcase() syntax.
Parameters:
As additional knowledge for Python programmers, the Python swapcase() method takes no parameters. this method is the same as Python uppercase and lowercase methods, which has no parameters.
Return Value:
To completely discuss the swapcase method, its return value is the conversion of case-based strings from lowercase to uppercase and uppercase to lowercase.
Its main function is to swap the letter of each word in string objects from lower to uppercases. This method will be of good use for Python programmers.
Uses:
The same as Python uppercase, the swapcase method can also be used in various ways. This method can be applied in the following ways:
- Convert string objects
- Convert strings with numbers or other character forms
- Able to execute within Python conditional statements
List upper Python
In the case of strings in a list, you can also apply the Python upper() method. This method converts lowercase strings into uppercase.
You may call the upper() function to convert each of the strings in a list or use a for loop statement. Utilize a for loop to traverse each string in a list by its index.
Call str.upper() on each string and assign the result to the list index corresponding to that string. Utilize list comprehension for a more efficient implementation.
Self upper Python
When we say the self upper() function in Python, it is the same as declaring the upper() method to convert strings. This method also returns uppercase strings when the characters are in lowercase form.
The syntax that you will use to apply self upper method is the string.upper().
Summary
All in all, this tutorial has completed the discussion you need to understand the work of the Python uppercase method.
This discusses the Python uppercase, lowercase, and swapcase methods and their uses. These methods will help you convert string objects in python.
You can also use the Python built-in methods with conditional statements and other Python characters.