How Can I Catch Multiple Exceptions in a Single Python `except` Block?

Catching Multiple Exceptions in One Line with Python's Except Block

In Python, you can capture a variety of exceptions using the 'except' block. Traditionally, handling multiple exceptions involved using several individual 'except' clauses:

try:
    # Code that may fail
except IDontLikeYouException:
    # Handle IDontLikeYouException
except YouAreTooShortException:
    # Handle YouAreTooShortException

However, if you need to handle the same exception in response to multiple other exceptions, a more concise approach exists.

Catching Multiple Exceptions with a Tuple

By grouping exceptions into a tuple, you can handle their occurrences in a single 'except' block:

try:
    # Code that may fail
except (IDontLikeYouException, YouAreBeingMeanException) as e:
    # Handle both exceptions

In this code, the tuple '(IDontLikeYouException, YouAreBeingMeanException)' specifies that the 'except' block will execute if either of those exceptions is raised.

Example Usage

Consider the code below:

def say_please():
    print("Please...")

try:
    raise IDontLikeYouException()
except (IDontLikeYouException, YouAreBeingMeanException):
    say_please()

When the 'say_please()' function is called in the 'except' block, it prints "Please...". This demonstrates how handling multiple exceptions using a tuple simplifies exception handling.

Note for Python 2

In Python 2, you can optionally include a variable name after the closing parenthesis of the tuple, but it is not required and deprecated in Python 3. Instead, use 'as' to bind the exception object to a variable:

try:
    # Code that may fail
except (IDontLikeYouException, YouAreBeingMeanException) as e:
    # Handle both exceptions

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