Is it possible to remove a break point set with ipdb.set_trace()?
I used ipdb.set_trace() somewhere in my Python code. Is it possible to ignore this break point using a IPDB command?
clear tells me that it cleared all break points, but IPDB stops again when it stumbles upon the line with ipdb.set_trace().
disable 1 tells me: No breakpoint numbered 1
ignore 1 says: Breakpoint index '1' is not valid
To clarify: Of course I could simply remove the break point from my source code. But this would require to quit the debugger and to start it again. Often it needs a lot of work to get somewhere and restarting the debugger makes life more difficult. Also if there is a huge loop and you want inspect objects in the loop, the easiest is to place a break point in the loop directly after the object. How could I then skip the loop (and all thousands of calls set_trace()) and step through the code after the loop using next?
Answer
Well, you CAN take advantage of the fact that anything in Python is an object. While in the debugger, you can do something like this:
def f(): pass
ipdb.set_trace = f
set_trace will still be called, but it won't do anything. Of course, it's somewhat permanent, but you can just do
reload ipdb
and you'll get the original behaviour back.
(why would you do this? when you accidentally put a breakpoint in an often-called function that is usually called under a try/except. Once you realize you're stopping 1000 times in this function, you try to ctrl-c, but that gets caught by the try/except and you're back in ipdb again. So, if you're in low-level code, make sure your set_traces have some context:
if myvar in ['some', 'sentinel', 'values']:
ipdb.set_trace()
etc.