1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
""" This module contains classes - NamedFileInTemporaryDirectory, TemporaryWorkingDirectory.
These classes add extra features such as creating a named file in temporary directory and
creating a context manager for the working directory which is also temporary.
"""
import os as _os
from pathlib import Path
from tempfile import TemporaryDirectory
class NamedFileInTemporaryDirectory(object):
def __init__(self, filename, mode="w+b", bufsize=-1, add_to_syspath=False, **kwds):
"""
Open a file named `filename` in a temporary directory.
This context manager is preferred over `NamedTemporaryFile` in
stdlib `tempfile` when one needs to reopen the file.
Arguments `mode` and `bufsize` are passed to `open`.
Rest of the arguments are passed to `TemporaryDirectory`.
"""
self._tmpdir = TemporaryDirectory(**kwds)
path = Path(self._tmpdir.name) / filename
encoding = None if "b" in mode else "utf-8"
self.file = open(path, mode, bufsize, encoding=encoding)
def cleanup(self):
self.file.close()
self._tmpdir.cleanup()
__del__ = cleanup
def __enter__(self):
return self.file
def __exit__(self, type, value, traceback):
self.cleanup()
class TemporaryWorkingDirectory(TemporaryDirectory):
"""
Creates a temporary directory and sets the cwd to that directory.
Automatically reverts to previous cwd upon cleanup.
Usage example:
with TemporaryWorkingDirectory() as tmpdir:
...
"""
def __enter__(self):
self.old_wd = Path.cwd()
_os.chdir(self.name)
return super(TemporaryWorkingDirectory, self).__enter__()
def __exit__(self, exc, value, tb):
_os.chdir(self.old_wd)
return super(TemporaryWorkingDirectory, self).__exit__(exc, value, tb)
|
