[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 tokenize.open assuming the code is in a file. I'd 
like to pass in a function that takes a filename and returns the source code in 
a string. 

At the very least, moving the call to "linecache.getline" into a separate 
method in PDB ("self.get_lines") would allow me to override that method with my 
own.

--
components: Demos and Tools, Library (Lib)
messages: 280056
nosy: Pinku Surana
priority: normal
severity: normal
status: open
title: Provide PDB hook to customize how to find source files
type: enhancement
versions: Python 3.5

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[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.

--

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