Exploring Python's Try Block for exception handling
How does the try block work in handling exceptions in Python?
The "try" block in Python encloses a section of code where exceptions might occur. It defines a scope within which the interpreter monitors for exceptions.
Here is how it works:
- The code that could raise an exception is placed inside the try block.
- When an exception occurs in the try block, Python immediately stops execution of the "try" block code.
- It will then jump to the appropriate "except" block to handle that exception.
- If no exception occurs, the "try" block will execute completely.
For example:
Code:
try:
n = int(input("Input a number: "))
result = 100 / n
print("Result:", result)
except ZeroDivisionError:
print("Cannot divide by zero!")
except ValueError:
print("Invalid input, please input a number.")
Output:
Input a number: abcd Invalid input, please input a number.
Input a number: 12 Result: 8.333333333333334
Input a number: 0 Cannot divide by zero!
In the example above:
- If the user inputs 0, a "ZeroDivisionError" exception is raised, and the program jumps to the corresponding "except" "ZeroDivisionError" block.
- If the user inputs a non-numeric input, a "ValueError" exception is raised, and the program jumps to the corresponding "except" "ValueError block".
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