Python shell inside gdb

Question

I have created a python script which starts an python console "pythonstart.py"

import sys
import subprocess
subprocess.call(['/usr/bin/python'])

I am sourcing it from inside gdb

gdb# source pythonstart.py

It gives an python console.

Problem: When I exit from python console, it returns to gdb, if I press "ENTER" again it again goes back to python console. I am not sure why its happening. Once I have quit the python console then why its coming back.

There is another situation: After exit from python, if I don't press "ENTER" on gdb but execute any command and then press "ENTER", problem does not appear.

(gdb) (gdb) source pythonstart.py Python 2.7.6 (default, Jun 22 2015, 18:00:18) [GCC 4.8.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> >>> >>> exit() (gdb) <---- Pressing Enter here Python 2.7.6 (default, Jun 22 2015, 18:00:18) [GCC 4.8.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> >>>

I want to stop this from falling back to python console after pressing enter key. Please help.

Mark Plotnick · Accepted Answer · 2016-03-30 16:36:28Z

After you type a command line, gdb saves it. If you type just a blank line, gdb re-executes the saved command (if any). In your case, typing ENTER will re-execute source pythonstart.py.

If the command is a script, it can call the gdb command dont-repeat, which will clear the saved command.

So you can add gdb.execute("dont-repeat") to your python script if you don't want a blank line to re-execute the source command.

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