pdb – Row Coding

Python Unit Testing: Automatically Running the Debugger when a test fails

November 14, 2023 by Tarik

I think what you are looking for is nose. It works like a test runner for unittest. You can drop into the debugger on errors, with the following command: nosetests –pdb

Python debugger tells me value of Numpy array is “*** Newest frame”

September 14, 2023 by Tarik

The command d is the command for the debugger used to go down the stack to a ‘newer frame’. It seems that the parsing cannot not handle this disambiguity. Try renaming the variable d. EDIT: Actually, the comments suggest much better handling than renaming.

In the Python debugger pdb, how do you exit interactive mode without terminating the debugging session

September 7, 2023 by Tarik

Sending an EOF by pressing Ctrl + D should work: $ python -m pdb myscript.py > …/myscript.py(1)<module>() -> import os (Pdb) import code (Pdb) code.interact() Python 2.7.11 (default, Dec 27 2015, 01:48:39) [GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin Type “help”, “copyright”, “credits” or “license” for more information. (InteractiveConsole) >>> <CTRL-D> (Pdb) c … Read more

Stepping into a function in IPython

August 28, 2023 by Tarik

ipdb has had support for runcall, runeval and run since 0.7, earlier this year. You can use it just like pdb.runcall: In [1]: def foo(a, b): …: print a + b …: In [2]: import ipdb In [3]: ipdb.runcall(foo, 1, 2) > <ipython-input-1-2e565fd9c4a4>(2)foo() 1 def foo(a, b): —-> 2 print a + b 3 ipdb>

In pdb how do you reset the list (l) command line count?

August 19, 2023 by Tarik

Late but hopefully still helpful. In pdb, make the following alias (which you can add to your .pdbrc file so it’s always available): alias ll u;;d;;l Then whenever you type ll, pdb will list from the current position. It works by going up the stack and then down the stack, which resets ‘l’ to show … Read more

How do I list all the attributes of an object in python pdb?

August 12, 2023 by Tarik

For pdb, you should be able to do p dir(a).

Python-pdb skip code (as in “not execute”)

August 8, 2023 by Tarik

Use the j/jump command: test.py contains: def destroy_the_universe(): raise RuntimeError(“Armageddon”) def useful_line(): print(“Kittens-r-us”) print(10) import pdb; pdb.set_trace() destroy_the_universe() useful_line() Then: C:\Temp>c:\python34\python test.py 10 > c:\temp\test.py(9)<module>() -> destroy_the_universe() (Pdb) l 4 def useful_line(): 5 print(“Kittens-r-us”) 6 7 print(10) 8 import pdb; pdb.set_trace() 9 -> destroy_the_universe() 10 useful_line() [EOF] (Pdb) j 10 > c:\temp\test.py(10)<module>() -> useful_line() (Pdb) … Read more

How to set breakpoint in another module (don’t set it on function definition line, if you want to break when function starts being executed)

July 30, 2023 by Tarik

You are setting the breakpoint correctly. I imagine it is not stopping because the line of code you are breaking on is not called. Put the break on line 383.

Python debugger (pdb) stopped handlying up/down arrows, shows ^[[A instead

July 21, 2023 by Tarik

Looks like from some reason you are missing the readline package. Simply install it by typing pip install readline and it should behave as expected. Remember to type it as superuser if you’re not in venv.