[issue28610] Provide PDB hook to customize how to find source files

2016-11-08 Thread Xavier de Gaye
Xavier de Gaye added the comment: This is a simple code object compiled from a source (the string), a module is quite different and more complex. The patch uses a fake module Loader to use linecache, there is no gain in going any further and pulling from the importlib machinery, I think.

[issue28610] Provide PDB hook to customize how to find source files

2016-11-08 Thread Pinku Surana
Pinku Surana added the comment: Thanks. This is clever. I've tried it out and it works. Would it be more appropriate to use "importlib" and "importlib.abc" to implement a custom loader for a string script? It looks like importlib.abc.InspectLoader does the right thing. -- ___

[issue28610] Provide PDB hook to customize how to find source files

2016-11-05 Thread Xavier de Gaye
Xavier de Gaye added the comment: This patch is an attempt at allowing the source debugging of scripts executed by the Python exec() function. It misses tests and documentation. You may use it using the idiom given in the following example to avoid stepping into the pdb code on the first invoc

[issue28610] Provide PDB hook to customize how to find source files

2016-11-04 Thread Xavier de Gaye
Xavier de Gaye added the comment: The lazycache() function of the linecache module meets your request, I think. See the following debugging session using the attached script: $ python -m pdb debug_script.py > /path/to/cwd/debug_script.py(1)() -> def debug_script(script): (Pdb) n > /path/to/cwd/

[issue28610] Provide PDB hook to customize how to find source files

2016-11-04 Thread Pinku Surana
New submission from Pinku Surana: I am using Python as a hosted scripting runtime for a product. All the user scripts are stored in a database. I use "compile" and "exec" to run the scripts. I'd like to use PDB to debug scripts. Unfortunately, PDB makes a call to linecache, which calls tokeniz