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Can't install wrapt on Windows

Cutter no at spam.com
Sat Dec 16 17:12:10 EST 2017 
Le 10/12/2017 à 21:46, dieter (dieter) a écrit :
> Cutter <no at spam.com> writes:
>> ...
>> I have trouble installing pylint on Windows 10, Python 3.6. There's a
>> problem during the installation of wrapt, which is a dependency of
>> pylint.
>>
>> Here are the contents of the commandline:
>>
>>> C:\WINDOWS\system32>python -m pip install pylint
>>> ...
>>> Collecting wrapt (from astroid>=1.5.1->pylint)
>>>    Using cached wrapt-1.10.11.tar.gz
>>> Installing collected packages: colorama, wrapt, astroid, pylint
>>>    Running setup.py install for wrapt ... error
>>> Exception:
>>> Traceback (most recent call last):
>>>    File "C:\Users\(...)\AppData\Local\Programs\Python\Python36\lib\site-packa
> ges\pip\compat\__init__.py", line 73, in console_to_str
>>>      return s.decode(sys.__stdout__.encoding)
>>> UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 51:
> invalid start byte
> 
> Obviously, something causes some "s" to be decoded using the "stdout" encoding
> (which usually is the system encoding). In your case, this encoding is "utf-8",
>   but "s" does not seem to be utf-8 encoded.
> 
> I would use debugging to find out what "s" is, where is comes from and why it
> does not use the "stdout" encoding.
> 

I don't know how to use pdb. Instead, I've added the following 
instruction at line 73 before the error occurs:

print("!! TEST !! : ", s)

Here's the output now:

 > C:\WINDOWS\system32>python -m pdb 
C:\Users\(...)\AppData\Local\Programs\Python\Python36\Lib\site-packages\pip\__main__.py 
install pylint
 >> 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages\pip\__main__.py(1)<module>()
 > -> from __future__ import absolute_import
 > (Pdb) c
 > Requirement already satisfied: pylint in 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages
 > Requirement already satisfied: mccabe in 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages 
(from pylint)
 > Requirement already satisfied: six in 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages 
(from pylint)
 > Requirement already satisfied: isort>=4.2.5 in 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages 
(from pylint)
 > Requirement already satisfied: astroid<2.0 in 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages 
(from pylint)
 > Requirement already satisfied: colorama; sys_platform == "win32" in 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages 
(from pylint)
 > Requirement already satisfied: lazy-object-proxy in 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages 
(from astroid<2.0->pylint)
 > Collecting wrapt (from astroid<2.0->pylint)
 >   Using cached wrapt-1.10.11.tar.gz
 > !! TEST !! :  b'running egg_info\r\n'
 > !! TEST !! :  b'creating pip-egg-info\\wrapt.egg-info\r\n'
 > !! TEST !! :  b'writing pip-egg-info\\wrapt.egg-info\\PKG-INFO\r\n'
 > !! TEST !! :  b'writing dependency_links to 
pip-egg-info\\wrapt.egg-info\\dependency_links.txt\r\n'
 > !! TEST !! :  b'writing top-level names to 
pip-egg-info\\wrapt.egg-info\\top_level.txt\r\n'
 > !! TEST !! :  b"writing manifest file 
'pip-egg-info\\wrapt.egg-info\\SOURCES.txt'\r\n"
 > !! TEST !! :  b"warning: manifest_maker: standard file '-c' not 
found\r\n"
 > !! TEST !! :  b'\r\n'
 > !! TEST !! :  b"reading manifest file 
'pip-egg-info\\wrapt.egg-info\\SOURCES.txt'\r\n"
 > !! TEST !! :  b"writing manifest file 
'pip-egg-info\\wrapt.egg-info\\SOURCES.txt'\r\n"
 > !! TEST !! :  b''
 > Building wheels for collected packages: wrapt
 >   Running setup.py bdist_wheel for wrapt ... !! TEST !! :  b'usage: 
-c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]\r\n'
 > -!! TEST !! :  b'   or: -c --help [cmd1 cmd2 ...]\r\n'
 > !! TEST !! :  b'   or: -c --help-commands\r\n'
 > !! TEST !! :  b'   or: -c cmd --help\r\n'
 > !! TEST !! :  b'\r\n'
 > !! TEST !! :  b"error: invalid command 'bdist_wheel'\r\n"
 > !! TEST !! :  b''
 > error
 >   Complete output from command 
C:\Users\(...)\AppData\Local\Programs\Python\Python36\python.exe -u -c 
"import setuptools, 
tokenize;__file__='C:\\Users\\(...)\\AppData\\Local\\Temp\\pip-build-4_065lch\\wrapt\\setup.py';f=getattr(tokenize, 
'open', open)(__file__);code=f.read().replace('\r\n', 
'\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d 
C:\Users\(...)\AppData\Local\Temp\tmpzyfae43tpip-wheel- --python-tag cp36:
 >   usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
 >      or: -c --help [cmd1 cmd2 ...]
 >      or: -c --help-commands
 >      or: -c cmd --help
 >
 >   error: invalid command 'bdist_wheel'
 >
 >   ----------------------------------------
 >   Failed building wheel for wrapt
 >   Running setup.py clean for wrapt
 > !! TEST !! :  b'running clean\r\n'
 > !! TEST !! :  b"'build\\lib.win-amd64-3.6' does not exist -- can't 
clean it\r\n"
 > !! TEST !! :  b"'build\\bdist.win-amd64' does not exist -- can't 
clean it\r\n"
 > !! TEST !! :  b"'build\\scripts-3.6' does not exist -- can't clean 
it\r\n"
 > !! TEST !! :  b''
 > Failed to build wrapt
 > Installing collected packages: wrapt
 >   Running setup.py install for wrapt ... !! TEST !! :  b'running 
install\r\n'
 > -!! TEST !! :  b'running build\r\n'
 > !! TEST !! :  b'running build_py\r\n'
 > !! TEST !! :  b'creating build\r\n'
 > !! TEST !! :  b'creating build\\lib.win-amd64-3.6\r\n'
 > !! TEST !! :  b'creating build\\lib.win-amd64-3.6\\wrapt\r\n'
 > !! TEST !! :  b'copying src\\wrapt\\arguments.py -> 
build\\lib.win-amd64-3.6\\wrapt\r\n'
 > !! TEST !! :  b'copying src\\wrapt\\decorators.py -> 
build\\lib.win-amd64-3.6\\wrapt\r\n'
 > !! TEST !! :  b'copying src\\wrapt\\importer.py -> 
build\\lib.win-amd64-3.6\\wrapt\r\n'
 > !! TEST !! :  b'copying src\\wrapt\\wrappers.py -> 
build\\lib.win-amd64-3.6\\wrapt\r\n'
 > !! TEST !! :  b'copying src\\wrapt\\__init__.py -> 
build\\lib.win-amd64-3.6\\wrapt\r\n'
 > !! TEST !! :  b'running build_ext\r\n'
 > !! TEST !! :  b"building 'wrapt._wrappers' extension\r\n"
 > !! TEST !! :  b'creating build\\temp.win-amd64-3.6\r\n'
 > \!! TEST !! :  b'creating build\\temp.win-amd64-3.6\\Release\r\n'
 > !! TEST !! :  b'creating build\\temp.win-amd64-3.6\\Release\\src\r\n'
 > !! TEST !! :  b'creating 
build\\temp.win-amd64-3.6\\Release\\src\\wrapt\r\n'
 > !! TEST !! :  b'C:\\Program Files (x86)\\Microsoft Visual 
Studio\\2017\\Community\\VC\\Tools\\MSVC\\14.11.25503\\bin\\HostX86\\x64\\cl.exe 
/c /nologo /Ox /W3 /GL /DNDEBUG /MD 
-IC:\\Users\\(...)\\AppData\\Local\\Programs\\Python\\Python36\\include 
-IC:\\Users\\(...)\\AppData\\Local\\Programs\\Python\\Python36\\include 
"-IC:\\Program Files (x86)\\Microsoft Visual 
Studio\\2017\\Community\\VC\\Tools\\MSVC\\14.11.25503\\ATLMFC\\include" 
"-IC:\\Program Files (x86)\\Microsoft Visual 
Studio\\2017\\Community\\VC\\Tools\\MSVC\\14.11.25503\\include" 
"-IC:\\Program Files (x86)\\Windows 
Kits\\10\\include\\10.0.16299.0\\ucrt" "-IC:\\Program Files 
(x86)\\Windows Kits\\10\\include\\10.0.16299.0\\shared" "-IC:\\Program 
Files (x86)\\Windows Kits\\10\\include\\10.0.16299.0\\um" "-IC:\\Program 
Files (x86)\\Windows Kits\\10\\include\\10.0.16299.0\\winrt" 
/Tcsrc/wrapt/_wrappers.c 
/Fobuild\\temp.win-amd64-3.6\\Release\\src/wrapt/_wrappers.obj\r\n'
 > !! TEST !! :  b'_wrappers.c\r\n'
 > !! TEST !! :  b"src/wrapt/_wrappers.c(195): warning C4244: 
'return'\xff: conversion de 'Py_hash_t' en 'long', perte possible de 
donn\x82es\r\n"
 > error
 > Exception:
 > Traceback (most recent call last):
 >   File 
"C:\Users\(...)\AppData\Local\Programs\Python\Python36\Lib\site-packages\pip\compat\__init__.py", 
line 74, in console_to_str
 >     return s.decode(sys.__stdout__.encoding)
 > UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 
51: invalid start byte
 >
 > During handling of the above exception, another exception occurred:
 >
 > Traceback (most recent call last):
 >   File 
"C:\Users\(...)\AppData\Local\Programs\Python\Python36\Lib\site-packages\pip\basecommand.py", 
line 215, in main
 >     status = self.run(options, args)
 >   File 
"C:\Users\(...)\AppData\Local\Programs\Python\Python36\Lib\site-packages\pip\commands\install.py", 
line 342, in run
 >     prefix=options.prefix_path,
 >   File 
"C:\Users\(...)\AppData\Local\Programs\Python\Python36\Lib\site-packages\pip\req\req_set.py", 
line 784, in install
 >     **kwargs
 >   File 
"C:\Users\(...)\AppData\Local\Programs\Python\Python36\Lib\site-packages\pip\req\req_install.py", 
line 878, in install
 >     spinner=spinner,
 >   File 
"C:\Users\(...)\AppData\Local\Programs\Python\Python36\Lib\site-packages\pip\utils\__init__.py", 
line 676, in call_subprocess
 >     line = console_to_str(proc.stdout.readline())
 >   File 
"C:\Users\(...)\AppData\Local\Programs\Python\Python36\Lib\site-packages\pip\compat\__init__.py", 
line 76, in console_to_str
 >     return s.decode('utf_8')
 > UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 
51: invalid start byte
 > The program exited via sys.exit(). Exit status: 2
 >> 
c:\users\(...)\appdata\local\programs\python\python36\lib\site-packages\pip\__main__.py(1)<module>()
 > -> from __future__ import absolute_import

Apparently _wrappers.c is compiled with MSVC but the Python script 
managing the installation can't handle a warning from MSVC containing a 
special character. _wrappers.c is deleted right after the installation 
fails so I can't look into it.

Also wrapt's setup.py doesn't recognize the command "bdist_wheel" ...

I can't go much further than that.
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