2 Python try-except
1. What is try-except?
try-except is used to handle errors in Python.
In simple words:
👉 Python tries to run some code
👉 If an error happens, Python does not stop
👉 Instead, Python runs the except part
2. Why Do We Need try-except?
Without try-except:
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Program crashes
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User sees scary error messages
With try-except:
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Program runs smoothly
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You can show friendly messages
3. Simple try-except Example
Example
Output:
👉 Program does not crash.
4. try-except with Specific Error
It is better to catch specific errors.
Example
5. Handling Multiple Errors
Example
6. try-except-else
else runs only when no error happens.
Example
7. try-except-finally
finally runs always, error or not.
Example
8. try-except with User Input
Example
9. try-except with Files
Example
10. Catch Error Message
You can print the error message.
Example
11. Common Beginner Mistakes
❌ Using except without try
❌ Wrong.
❌ Catching All Errors Without Care
👉 Not good practice.
12. Simple Practice Examples
Example 1: Safe Division
Example 2: Input Check
Example 3: File Reading
13. Summary (Python try-except)
✔ Handles errors safely
✔ Prevents program crash
✔ try runs risky code
✔ except handles error
✔ else and finally are optional
📘 Perfect for Beginner eBook
This chapter is ideal for:
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Python beginner books
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School & college students
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Self-learners
If you want next, I can write:
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raise Exception
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Custom Exceptions
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Debugging Python
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Mini Python Projects
Just tell me 😊
