python: How to check that returned value is exception or not
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python: How to check that returned value is exception or not
I have two functions. function "main" is calling to function "submain". "submain" function contains try-catch block and return some value.
If "submain" executes successfully then it returns some value which i will display to end user directly.
If i get an exception then i have to prepare one user friendly message and print that. But to do that i need to know whether returned value is exception or not.
How can i check that returned value in exception or valid result?
Here is my pseudo code:
def submain():
try:
result = call to external API
return result
excepion, e:
_logger(e)
def main(value):
for x in value:
submain()
# if return is exception then break loop and give msg to end user.
Take a look at the section
Best Practices: except clause in this answer. You can catch an exception at a lower level, do some required work and then re-raise it for the next upper level to catch and handle it again, if needed.– shmee
19 mins ago
Best Practices: except clause
@markkeven: Added pseudo code.
– Ankit
just now
1 Answer
1
If you want to handle (try catch) the exception in function main then I think you should throw it from function submain with its context.
If you swallow the exception in submain function there no way main function could know that without some tricks.
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Would you please put your code?
– mark keven
40 mins ago