Find the current line number of a running python process





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I have long-running python programs that do not have sufficient internal logging. I'd like to be able to attach to a running python program and find out it's current line number. Ideally, I'd like to do this without interrupting its execution, but I'm happy to have it pause, print the stack t race, and then keep going.



I could easily type control-C, but that would kill the program.



Is there any way to do this?






python debugging







share|improve this question























  • If you're fine with debugging kind of approach, try out pdb - docs.python.org/3/library/pdb.html

    – Jim Todd
    Jan 3 at 15:29






  • 1





    Thanks. pdb works great if you launch the program under pdb, but it doesn't look like it can attach to a running python program or perform introspection.

    – vy32
    Jan 3 at 15:40


















2















I have long-running python programs that do not have sufficient internal logging. I'd like to be able to attach to a running python program and find out it's current line number. Ideally, I'd like to do this without interrupting its execution, but I'm happy to have it pause, print the stack t race, and then keep going.



I could easily type control-C, but that would kill the program.



Is there any way to do this?






python debugging







share|improve this question























  • If you're fine with debugging kind of approach, try out pdb - docs.python.org/3/library/pdb.html

    – Jim Todd
    Jan 3 at 15:29






  • 1





    Thanks. pdb works great if you launch the program under pdb, but it doesn't look like it can attach to a running python program or perform introspection.

    – vy32
    Jan 3 at 15:40














2












2








2








I have long-running python programs that do not have sufficient internal logging. I'd like to be able to attach to a running python program and find out it's current line number. Ideally, I'd like to do this without interrupting its execution, but I'm happy to have it pause, print the stack t race, and then keep going.



I could easily type control-C, but that would kill the program.



Is there any way to do this?






python debugging







share|improve this question














I have long-running python programs that do not have sufficient internal logging. I'd like to be able to attach to a running python program and find out it's current line number. Ideally, I'd like to do this without interrupting its execution, but I'm happy to have it pause, print the stack t race, and then keep going.



I could easily type control-C, but that would kill the program.



Is there any way to do this?






python debugging




python debugging






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 3 at 15:20









vy32vy32

12.2k2182166




12.2k2182166













  • If you're fine with debugging kind of approach, try out pdb - docs.python.org/3/library/pdb.html

    – Jim Todd
    Jan 3 at 15:29






  • 1





    Thanks. pdb works great if you launch the program under pdb, but it doesn't look like it can attach to a running python program or perform introspection.

    – vy32
    Jan 3 at 15:40



















  • If you're fine with debugging kind of approach, try out pdb - docs.python.org/3/library/pdb.html

    – Jim Todd
    Jan 3 at 15:29






  • 1





    Thanks. pdb works great if you launch the program under pdb, but it doesn't look like it can attach to a running python program or perform introspection.

    – vy32
    Jan 3 at 15:40

















If you're fine with debugging kind of approach, try out pdb - docs.python.org/3/library/pdb.html

– Jim Todd
Jan 3 at 15:29





If you're fine with debugging kind of approach, try out pdb - docs.python.org/3/library/pdb.html

– Jim Todd
Jan 3 at 15:29




1




1





Thanks. pdb works great if you launch the program under pdb, but it doesn't look like it can attach to a running python program or perform introspection.

– vy32
Jan 3 at 15:40





Thanks. pdb works great if you launch the program under pdb, but it doesn't look like it can attach to a running python program or perform introspection.

– vy32
Jan 3 at 15:40












1 Answer
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2














Seems like py-spy is what you are looking for.



It can connect to running process without modifying and show what it currently do.






share|improve this answer



















  • 1





    py-spy it is! Thanks!

    – vy32
    Jan 4 at 2:51












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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









2














Seems like py-spy is what you are looking for.



It can connect to running process without modifying and show what it currently do.






share|improve this answer



















  • 1





    py-spy it is! Thanks!

    – vy32
    Jan 4 at 2:51
















2














Seems like py-spy is what you are looking for.



It can connect to running process without modifying and show what it currently do.






share|improve this answer



















  • 1





    py-spy it is! Thanks!

    – vy32
    Jan 4 at 2:51














2












2








2







Seems like py-spy is what you are looking for.



It can connect to running process without modifying and show what it currently do.






share|improve this answer













Seems like py-spy is what you are looking for.



It can connect to running process without modifying and show what it currently do.







share|improve this answer












share|improve this answer



share|improve this answer










answered Jan 3 at 15:55









Danyla HulchukDanyla Hulchuk

1365




1365








  • 1





    py-spy it is! Thanks!

    – vy32
    Jan 4 at 2:51














  • 1





    py-spy it is! Thanks!

    – vy32
    Jan 4 at 2:51








1




1





py-spy it is! Thanks!

– vy32
Jan 4 at 2:51





py-spy it is! Thanks!

– vy32
Jan 4 at 2:51




















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