New submission from Cutter <[email protected]>:
When trying to install pylint using pip on Windows 10, the installation of
wrapt (a dependency of pylint) fails because a special character in an MSVC
warning can't be decoded to utf-8.
Below is the relevant part of the console output:
---
Exception:
Traceback (most recent call last):
File
"C:\Users\(...)\AppData\Local\Programs\Python\Python36\lib\site-packages\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
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 75, in console_to_str
return s.decode('utf_8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 51:
invalid start byte
---
I changed line 73 in \pip\compat\__init__.py to: print("!! TEST !! : ", s). The
full console output after that change is in the attachment. The relevant part
is:
!! 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
As a workaround I've changed the original line 73 in \pip\compat\__init__.py :
return s.decode(sys.__stdout__.encoding)
to:
return s.decode(sys.__stdout__.encoding, "replace")
(thanks to dieter on comp.lang.python for his help). I don't have the knowledge
to propose a patch.
----------
components: Windows
files: console.txt
messages: 308485
nosy: Cutter, Marcus.Smith, dstufft, ncoghlan, paul.moore, steve.dower,
tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: pip can't handle MSVC warnings containing special characters
type: crash
versions: Python 3.6
Added file: https://bugs.python.org/file47334/console.txt
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Python tracker <[email protected]>
<https://bugs.python.org/issue32350>
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