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A generic context manager for readable files.

Project description

Provides the gopen.readable() and gopen.gread() functions.

readable(source) supports with statements for readable file objects:

>>> with gopen.readable(source) as f:
>>>     <read from f>

gread(source) returns an iterator over input lines:

>>> from gopen import gread
>>> lines = gread(source)
>>> lines
<generator object gread at 0x7f45752ebf10>

<source> can be:

  • a readable file object,
  • a file descriptor and
  • a file pathname.

gzip and bzip2-compressed files will be decompressed on the fly. No side effects: if source is a file descriptor or a file handle, it will not be closed.

Example:

>>> f = open('txt', 'r')
>>> for source in ['txt', 'txt.gz', 'txt.bz2', f]:
...     print('%r (%r)' % (list(gread(source)), source))
...
['Simple is\n', 'better than complex.'] ('txt')
['Simple is\n', 'better than complex.'] ('txt.gz')
['Simple is\n', 'better than complex.'] ('txt.bz2')
['Simple is\n', 'better than complex.'] (<_io.TextIOWrapper name='txt' mode='r' encoding='UTF-8'>)
>>> f.closed
False

Changes

0.6 (2019-05-27)

  • Python3 only (>= 3.4)

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