simple pdb traceback

pdb_traceback.py

import pdb

x = 0

while True:
	pdb.set_trace()
	y = "line of code not triggering an error"
	x += 1
	assert x != 3

Traceback

Traceback (most recent call last):
  File "minimal_pdb_traceback.py", line 7, in <module>
    y = "line of code not triggering an error"
AssertionError

Run this code from the command line (python pdb_traceback.py). The set_trace() will launch the debugger. I hit 'c' each time I land on the breakpoint. After three passes, the program exits with the AssertionError and I see the traceback above, pointing to the wrong line of code.