# Convert temperatures in Python

This program show you how to convert temperatures in Python. It uses a menu system to allow you to select an option. Or, you can also end the program. In addition, you get to see the match..case statement in action.

## Code listing to convert temperatures in Python

Below is the code listing for this program.

``````# ---------------------------------------------------------------------
# convert_temps.py
# Designed and programmed by Alex Shaw III
# Date created:  January 5, 2023
#
# This program allows you to convert Celsius, Fahrenheit, and Kelvin
# ---------------------------------------------------------------------

# -----------------
# -----------------
menuItems = ['A.  Celsius to Fahrenheit', 'B.  Fahrenheit to Celsius',
'C.  Celsius to Kelvin', 'D.  Exit program']

# ----------------
# Define functions
# ----------------

print('-'*40, '\n')

# ------------
# Main program
# ------------
end = False
while (end == False):

choice = input('Please make a selection: ')

match choice.upper():
case 'A':
print('\n****** Convert Celsius to Fahrenheit ******\n')
celTemp = input('Enter a Celsius temperature: ')

fahTemp = (float(celTemp) * (9 / 5)) + 32

print(str(celTemp) + ' degrees Celsius is ' +
str(fahTemp) + ' degrees Fahrenheit.\n')
case 'B':
print('\n****** Convert Fahrenheit to Celsius ******\n')
fahTemp = input('Enter a Fahrenheit temperature: ')

celTemp = (float(fahTemp) - 32) * (5 / 9)

print(str(fahTemp) + ' degrees Fahrenheit is ' +
str(celTemp) + ' degrees Celsius.\n')
case 'C':
print('\n****** Convert Celsius to Kelvin ******\n')
celTemp = input('Enter a Celsius temperature: ')

kelTemp = float(celTemp) + 273.15

print(str(celTemp) + ' degrees Celsius is ' +
str(kelTemp) + ' Kelvin.\n')
case 'D':
print('\n****** End of program ******')
print('Thank you for using this program.\n')
end = True
case _:
print('\n****** Invalid selection ******')

#### Output

Here is the output for the above program.

#### Developer’s note

Instead of putting all that code in the case routines, you can also create functions for each case routine.

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#### Related

###### Python page

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Python is a high-level computer programming language. If you want more information on Python, then visit Python Software Foundation.