I use stackprinter[1] for the same. It's advisable to suppress printing of library functions (`suppressed_paths=["lib/python"])`) otherwise deep stack traces (a

I use stackprinter[1] for the same. It's advisable to suppress printing of library functions (`suppressed_paths=["lib/python"])`) otherwise deep stack traces (as some libraries---hello pandas---like to produce) will cause the actually-problematic code to be elided. Long reprs are also truncated so your 2GB JSON buffer isn't going to blow up your trace. this: Traceback (most recent call last): File "demo.py", line 12, in <module> dangerous_function(somelist + anotherlist) File "demo.py", line 6, in dangerous_function return sorted(blub, key=lambda xs: sum(xs)) File "demo.py", line 6, in <lambda> return sorted(blub, key=lambda xs: sum(xs)) TypeError: unsupported operand type(s) for +: 'int' and 'str' becomes: File demo.py, line 12, in <module> 9 somelist = [[1,2], [3,4]] 10 anotherlist = [['5', 6]] 11 spam = numpy.zeros((3,3)) --> 12 dangerous_function(somelist + anotherlist) 13 except: .................................................. somelist = [[1, 2, ], [3, 4, ], ] anotherlist = [['5', 6, ], ] spam = 3x3 array([[0. 0. 0.] [0. 0. 0.] [0. 0. 0.]]) .................................................. [...] File demo.py, line 6, in <lambda> 3 4 5 def dangerous_function(blub): --> 6 return sorted(blub, key=lambda xs: sum(xs)) 7 .................................................. xs = ['5', 6, ] .................................................. TypeError: unsupported operand type(s) for +: 'int' and 'str' [1] https://github.com/cknd/stackprinter https://github.com/cknd/stackprinter