[issue20218] Add `pathlib.Path.write` and `pathlib.Path.read`

[Ram Rachum]

New submission from Ram Rachum:

I'd really like to have methods `pathlib.Path.write` and `pathlib.Path.read`. Untested implementation:

def read(self, binary=False):
    with self.open('br' is binary else 'r') as file:
        return file.read()

def write(self, data. binary=False):
    with self.open('bw' is binary else 'w') as file:
        file.write(data)

This will be super useful to me. Many files actions are one liners like that, and avoiding putting the `with` clause in user code would be wonderful.

Antoine suggests that `binary` shouldn't be an argument, that there should be separate methods for reading/writing text and binary contents, and that the text one would require passing in encoding and other parameters. I'll be happy to add these to the implementation and create a patch, once people can define which parameters should be used.

----------
components: Library (Lib)
messages: 207874
nosy: cool-RR
priority: normal
severity: normal
status: open
title: Add `pathlib.Path.write` and `pathlib.Path.read`
type: enhancement
versions: Python 3.4, Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20218>
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