New submission from Varun Agrawal <varagra...@gmail.com>:
Currently, json.load and json.dump take file pointers, aka file-like objects
which have support for `.write()` and `.read()`. This necessitates the
following pattern of code on a regular basis:
```
with open(filename) as f:
o = json.load(f)
...
with open(filename, 'w') as f:
json.dump(o, f)
```
While this is a fair pattern to live by, it would be nice for programmers to
pass in the filename directly and let the functions handle opening and closing
the file.
The way to do this would be to have a simple check if `fp` is a path-like
object or a file-like object, and set up a context manager accordingly (using
contextlib).
The original `load()` and `dump()` code definition can then be placed inside
the context manager, which should make testing painless.
There might be an argument for this not being in alignment with duck-typing,
but the overall benefits of this approach along with the ease afforded to
programmers should make for a strong argument.
----------
components: Library (Lib)
messages: 348097
nosy: varunagrawal
priority: normal
severity: normal
status: open
title: json - make load and dump work with filenames and path-like objects
type: enhancement
versions: Python 3.9
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue37615>
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