New submission from Kevin Bonham:
Python 3.6.0 (default, Dec 24 2016, 08:01:42)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from tempfile import NamedTemporaryFile
>>> tmp = NamedTemporaryFile()
>>> tmp.write("hello world!")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/tempfile.py",
line 483, in func_wrapper
return func(*args, **kwargs)
TypeError: a bytes-like object is required, not 'str'
>>> type(tmp)
<class 'tempfile._TemporaryFileWrapper'>
The more verbose error points to issue #18879
(http://bugs.python.org/issue18879), which seems very similar to my problem,
but is marked as resolved.
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-23-b9a4238a79b7> in <module>()
----> 1 tmp_file.write("blah")
/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/tempfile.py
in func_wrapper(*args, **kwargs)
481 @_functools.wraps(func)
482 def func_wrapper(*args, **kwargs):
--> 483 return func(*args, **kwargs)
484 # Avoid closing the file as long as the wrapper is alive,
485 # see issue #18879.
TypeError: a bytes-like object is required, not 'str'
This also seems like it might be related to http://bugs.python.org/issue28867,
though I'm getting the same behavior with TemporaryFile:
>>> from tempfile import TemporaryFile
>>> tmp2 = TemporaryFile()
>>> tmp2.write("Hello World")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: a bytes-like object is required, not 'str'
I can do:
>>> with open(tmp.name, "w") as t:
... t.write("Hello world!")
Is this intended behavior? The docs still say that these functions should
return file-like objects.
----------
components: Library (Lib)
messages: 285266
nosy: Kevin Bonham
priority: normal
severity: normal
status: open
title: Can't write to NamedTemporaryFile
type: behavior
versions: Python 3.6
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue29245>
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