08.04.21 23:31, Ethan Furman пише:
> In issue14243 [1] there are two issues being tracked:
>
> - the difference in opening shared files between posix and Windows
> - the behavior of closing the underlying file in the middle of
> NamedTemporaryFile's context management
>
> I'd like to address and get feedback on the context management issue.
>
> ```python
> from tempfile import NamedTemporaryFile
>
> with NamedTemporaryFile() as fp:
> fp.write(b'some data')
> fp = open(fp.name())
> data = fp.read()
>
> assert data == 'some_data'
> ```
These issues are usually solved by using TemporaryDirectory:
with TemporaryDirectory() as td:
filename = os.path.join(td, 'tempfile')
with open(filename, 'wb') as fp:
fp.write(b'some data')
with open(filename, 'rb') as fp:
data = fp.read()
What if make NamedTemporaryFile a wrapper around TemporaryDirectory and
always create a new temporary directory for file?
@contextmanager
def NamedTemporaryFile():
with TemporaryDirectory() as td:
filename = os.path.join(td, 'tempfile')
with open(filename, 'wb') as fp:
yield fp
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