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Comments on How can I provide additional information when raising an exception?
Parent
How can I provide additional information when raising an exception?
Suppose I have some code like:
filename = "bad_dir"
print(f"File not found: {filename}.")
raise(FileNotFoundError)
When the exception isn't caught, the stack trace is printed at the end of the output, right as the program aborts. The printed message could be far above this and is hard to find in the terminal and hard to associate with the exception.
How can I provide additional information in the exception, so that it can be seen immediately when the traceback is displayed?
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The following users marked this post as Works for me:
| User | Comment | Date |
|---|---|---|
| mcp | (no comment) | Oct 26, 2022 at 15:19 |
Python documentation suggests that you can simply add other parameters when raising the Exception and retrieve them using args:
Code
try:
raise Exception('spam', 'eggs')
except Exception as inst:
print(inst.args) # arguments stored in .args
x, y = inst.args # unpack args
print('x =', x)
print('y =', y)
Output
('spam', 'eggs')
x = spam
y = eggs
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