Want to see more precisely where you are or were at in a traceback or callstack your Python code has several places in a line it could have errored ? Even if the code was something created at runtime with say `eval` or `exec` or there is otherwise no source code? Then this package is for you. Some examples of the kinds of code this module can disambiguate: i / j / k # which divide? prev[prev[0]] # which prev ? [e[0] for i in d[j] if got[i] == e[i]] # lots going on here exec(some_code % 10, namespace) # code at runtime