cs-pfx

The primary facility here is Pfx, a context manager which manitains a per thread stack of context prefixes. Usage is like this:

from cs.pfx import Pfx
...
def parser(filename):
  with Pfx("parse(%r)", filename):
    with open(filename) as f:
      for line, lineno in enumerate(f, 1):
        with Pfx("%d", lineno) as P:
          if line_is_invalid(line):
            raise ValueError("problem!")
          P.info("line = %r", line)

This produces log messages like:

datafile: 1: line = 'foo\n'

and exception messages like:

datafile: 17: problem!

which lets one put just the relevant complaint in exception and log messages and get useful calling context on the output. This does make for wordier logs and exceptions but used with a little discretion produces far more debugable results.

Release files for cs-pfx 20170903

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for cs-pfx 20170903
File	Size	Uploaded
cs.pfx-20170903.tar.gz	4.7 kB	Sep 3, 2017	Details

Release files / cs.pfx-20170903.tar.gz

Download URL	cs.pfx-20170903.tar.gz
Size	4.7 kB
Tags	Source
SHA-256 checksum How to use checksums	`91ada24ecba2d40455d1e8bb06116372fd5ee5a7c8182ac358369df26ee2e576`
BLAKE2b-256 checksum How to use checksums	`5870d950022630e60b58501e14f7d1200a9ded4518b088a3cab3c83e162df3ce`
Upload date	Sep 3, 2017
Uploaded using Trusted Publishing? What is trusted publishing?	No