🧩 Python Multiple Except Blocks — Handling Different Errors Separately

Introduction 🌟

Python allows you to write multiple except blocks to catch and handle different types of errors individually. This makes your code more robust, readable, and precise.

Note

💡 Each except block handles a specific exception type.

1. Basic Example of Multiple Except Blocks 🧱

multiple_except_basic.py

try:
    number = int(input("Enter a number: "))
    result = 10 / number
except ValueError:
    print("❌ You must enter a valid integer!")
except ZeroDivisionError:
    print("❌ Cannot divide by zero!")

✔ If user enters a string → ValueError
✔ If user enters 0 → ZeroDivisionError

2. Multiple Except Blocks With Else & Finally 🎯

multiple_except_else_finally.py

try:
    x = int("10")
    y = 10 / x
except ValueError:
    print("❌ Value conversion error")
except ZeroDivisionError:
    print("❌ Cannot divide by zero!")
else:
    print("✔ No errors! Result =", y)
finally:
    print("🎉 Done executing block")

Note

✔ else runs only when no exception occurs ✔ finally runs regardless of errors

3. Handling Many Exceptions Separately 🧠

separate_exceptions.py

try:
    data = [1, 2, 3]
    print(data[5])
except IndexError:
    print("❌ Index out of range!")
except TypeError:
    print("❌ Invalid type used!")
except ValueError:
    print("❌ Invalid value!")

✔ Each error type triggers its own block.

4. Catching Exception Messages Using as 📎

exception_as.py

try:
    x = int("abc")
except ValueError as e:
    print("Error occurred:", e)

5. Ordering Matters! ⚠️

Always place specific exceptions firstand general exceptions later.

ordering_exceptions.py

try:
    num = int("abc")
except ValueError:
    print("❌ Not a valid integer!")
except Exception:
    print("⚠️ A general exception occurred")

Note

❌ WRONG ORDER:

wrong_order.py

try:
    num = int("abc")
except Exception:
    print("This catches everything...")
except ValueError:
    print("This will NEVER run")

✔ Because Exception is the parent class of ValueError.

6. Real-World Example: File Handling 📁

file_handling_multiple.py

try:
    f = open("data.txt")
    value = int(f.read())
    result = 100 / value
except FileNotFoundError:
    print("❌ File not found!")
except ValueError:
    print("❌ File does not contain a valid number!")
except ZeroDivisionError:
    print("❌ Division by zero is not allowed!")

7. Real-World Example: User Authentication 🔐

auth_multiple_excepts.py

try:
    users = {"admin": "123"}
    username = input("User: ")
    password = input("Pass: ")

    if username not in users:
        raise KeyError("User not found")
    if users[username] != password:
        raise PermissionError("Wrong password")

    print("✔ Login successful!")
except KeyError as e:
    print("❌", e)
except PermissionError as e:
    print("❌", e)

8. When to Use Multiple Except Blocks? 🎯

  • ✔ When different errors require different actions
  • ✔ When debugging complex code
  • ✔ When providing user-friendly error messages
  • ✔ When recovering gracefully from multiple failure points

Conclusion 🎉

>>“Multiple Except Blocks make your error handling precise — catching only what you intend.” ✨

You now fully understand Multiple Except Blocks in Python! Want the next topic? Try Custom Exceptions, Else Block, Finally Block, or Raising Exceptions. Just tell me! 😊