Character Classification (Digit / Alpha / Special)
Classify a single character as a digit, alphabet, or special character.
BeginnerTopic: Conditional Programs
What You'll Learn
- Using isdigit() and isalpha()
- Designing a multi-way classification
- Validating single-character input
Python Character Classification (Digit / Alpha / Special) Program
This program helps you to learn the fundamental structure and syntax of Python programming.
# Program to classify a character as digit, alphabet, or special character
ch = input("Enter a single character: ")
if len(ch) != 1:
print("Please enter exactly one character.")
else:
if ch.isdigit():
print(ch, "is a digit")
elif ch.isalpha():
print(ch, "is an alphabet")
else:
print(ch, "is a special character")Output
Enter a single character: @ @ is a special character
Step-by-Step Breakdown
- 1Read a character from the user.
- 2Ensure there is exactly one character.
- 3Use isdigit() to detect digits.
- 4Use isalpha() to detect letters.
- 5Otherwise, label it as a special character.
Understanding Character Classification (Digit / Alpha / Special)
We use built-in string methods:
•
.isdigit() → checks if all characters are digits.•
.isalpha() → checks if all characters are letters.If the input is not a digit and not a letter, we treat it as a special character (punctuation, symbol, etc.).
Note: To write and run Python programs, you need to set up the local environment on your computer. Refer to the complete article Setting up Python Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your Python programs.