Being able to read non-python text files is not a purpose of linecache, but it
does work and people use it. This changeset adjusts the language to make it
clear that Python files are not treated uniquely, but does not go so far as to
say reading non-python files is explicitly supported.
Use a Python source file (linecache.__file__) instead of /etc/passwd.
Modify also linecache docstrings to clarify the linecache is written to cache
Python source files, not any text files.
Provide a way to seed the linecache for a PEP-302 module without actually
loading the code.
Provide a new object API for traceback, including the ability to not lookup
lines at all until the traceback is actually rendered, without any trace of the
original objects being kept alive.
Serhiy Storchaka
Terry Jan Reedy
Martin Panter
R David Murray
Victor Stinner
Robert Collins
Raymond Hettinger
Éric Araujo
Georg Brandl