解决Anaconda执行pip等命令报alueError: failed to parse CPython sys.version错误的问题

问题简述:

环境:deepin15+Anaconda3,在执行pip时报错如下:

Traceback (most recent call last):File "/usr/share/Anaconda3/bin/pip", line 7, in <module>from pip._internal import mainFile "/usr/share/Anaconda3/lib/python3.6/site-packages/pip/_internal/__init__.py", line 42, in <module>from pip._internal import cmdoptionsFile "/usr/share/Anaconda3/lib/python3.6/site-packages/pip/_internal/cmdoptions.py", line 16, in <module>from pip._internal.index import (File "/usr/share/Anaconda3/lib/python3.6/site-packages/pip/_internal/index.py", line 15, in <module>from pip._vendor import html5lib, requests, sixFile "/usr/share/Anaconda3/lib/python3.6/site-packages/pip/_vendor/requests/__init__.py", line 86, in <module>from pip._vendor.urllib3.contrib import pyopensslFile "/usr/share/Anaconda3/lib/python3.6/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.py", line 46, in <module>import OpenSSL.SSLFile "/usr/share/Anaconda3/lib/python3.6/site-packages/OpenSSL/__init__.py", line 8, in <module>from OpenSSL import crypto, SSLFile "/usr/share/Anaconda3/lib/python3.6/site-packages/OpenSSL/crypto.py", line 12, in <module>from cryptography import x509File "/usr/share/Anaconda3/lib/python3.6/site-packages/cryptography/x509/__init__.py", line 8, in <module>from cryptography.x509.base import (File "/usr/share/Anaconda3/lib/python3.6/site-packages/cryptography/x509/base.py", line 16, in <module>from cryptography.x509.extensions import Extension, ExtensionTypeFile "/usr/share/Anaconda3/lib/python3.6/site-packages/cryptography/x509/extensions.py", line 13, in <module>from asn1crypto.keys import PublicKeyInfoFile "/usr/share/Anaconda3/lib/python3.6/site-packages/asn1crypto/keys.py", line 22, in <module>from ._elliptic_curve import (File "/usr/share/Anaconda3/lib/python3.6/site-packages/asn1crypto/_elliptic_curve.py", line 51, in <module>from ._int import inverse_modFile "/usr/share/Anaconda3/lib/python3.6/site-packages/asn1crypto/_int.py", line 52, in <module>if platform.python_implementation() == 'PyPy':File "/usr/share/Anaconda3/lib/python3.6/platform.py", line 1257, in python_implementationreturn _sys_version()[0]File "/usr/share/Anaconda3/lib/python3.6/platform.py", line 1215, in _sys_versionrepr(sys_version))
ValueError: failed to parse CPython sys.version: '3.6.4 |Anaconda, Inc.| (default, Jan 16 2018, 18:10:19) \n[GCC 7.2.0]'

问题定位:

/usr/share/Anaconda3/lib/python3.6/platform.py:1215:

# CPython

match = _sys_version_parser.match(sys_version)

if match is None:

raise ValueError(

'failed to parse CPython sys.version: %s' %

repr(sys_version))

version, buildno, builddate, buildtime, compiler = \

match.groups()

_sys_version_parser:

_sys_version_parser = re.compile(

r'([\w.+]+)\s*' # "version<space>"

r'\(#?([^,]+)' # "(#buildno"

r'(?:,\s*([\w ]*)' # ", builddate"

r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>"

r'\[([^\]]+)\]?', re.ASCII) # "[compiler]"

发现此正则表达式未考虑Anaconda增加了"|Anaconda, Inc.|"的问题,需要过滤掉.

解决方法: