PermissionError with AtomicSaver on Windows about boltons

[mahmoud]

Interesting, looks like a Windows file locking issue? I'll have to dust off my Windows machine and give it a closer look. I bet it affects all versions of Windows, but just in case, is this Windows 7 or?

[stlehmann]

Yes it' s Windows 7...

[mahmoud]

Hey MrLeeh, give it another shot, seems to work great for me on Windows 7 (and Unix).

[stlehmann]

That is strange. For me it is still not working. Actually I discovered the buck when using the pip-tools library which uses the AtomicSaver.

[mahmoud]

Interesting. Does that mean you're using the pip installed boltons or are you working off the git trunk, or easiest probably, just downloading fileutils.py and importing it?

[stlehmann]

Currently I' m using the pip install boltons (0.6.5)

[mahmoud]

Ah, yes, the PyPI version hasn't been updated yet. To test the fix just run pip install -e git+https://github.com/mahmoud/boltons.git#egg=boltons and try the fileutils code in question. Or, if you'd like, I can roll out 0.6.6 and you can test that (I did test on Windows 7 earlier today ;) )

[stlehmann]

Thanks for the link. Now I don' t get this error anymore. But another one:

Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) [MSC v.1600 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from boltons.fileutils import AtomicSaver
>>> with AtomicSaver('foo.txt') as f:
...     f.write('whatever')
...
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
TypeError: 'str' does not support the buffer interface

Am I doing something wrong by passing just the String to the write function?

[mahmoud]

Ah, Python 3. You need to encode that string to bytes before writing. f.write('mystring'.encode('utf8')) OR f.write(b'mystring').

[stlehmann]

Ah, great. That works nice now. I didn' t think about byte encoding. Thank you very much for your help here 👍

[mahmoud]

no problem, enjoy!