Pip安装扭曲错误1

Question

pip install Twisted在Mac osx 10.9.4上使用virtualenv时,我得到了这个结果:

Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/9r/3b500gbs3093ms87mqqbckr80000gn/T/pip-build-doynftp7/twisted/

我不知道该如何解决.我使用了easy_install,但是我遇到了SSL验证问题.有人有类似的问题吗？其余的错误消息如下.

 Collecting twisted
 Using cached Twisted-16.6.0.tar.bz2
 Complete output from command python setup.py egg_info:
Download error on https://pypi.python.org/simple/incremental/: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749) -- Some packages may not be found!
Couldn't find index page for 'incremental' (maybe misspelled?)
Download error on https://pypi.python.org/simple/: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749) -- Some packages may not be found!
No local packages or working download links found for incremental>=16.10.1
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/private/var/folders/9r/3b500gbs3093ms87mqqbckr80000gn/T/pip-build-lqvxc68n/twisted/setup.py", line 21, in <module>
    setuptools.setup(**_setup["getSetupArgs"]())
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/distutils/core.py", line 108, in setup
    _setup_distribution = dist = klass(attrs)
  File "/Users/Complex-Cauchy/1/lib/python3.6/site-packages/setuptools/dist.py", line 317, in __init__
    self.fetch_build_eggs(attrs['setup_requires'])
  File "/Users/Complex-Cauchy/1/lib/python3.6/site-packages/setuptools/dist.py", line 372, in fetch_build_eggs
    replace_conflicting=True,
  File "/Users/Complex-Cauchy/1/lib/python3.6/site-packages/pkg_resources/__init__.py", line 851, in resolve
    dist = best[req.key] = env.best_match(req, ws, installer)
  File "/Users/Complex-Cauchy/1/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1123, in best_match
    return self.obtain(req, installer)
  File "/Users/Complex-Cauchy/1/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1135, in obtain
    return installer(requirement)
  File "/Users/Complex-Cauchy/1/lib/python3.6/site-packages/setuptools/dist.py", line 440, in fetch_build_egg
    return cmd.easy_install(req)
  File "/Users/Complex-Cauchy/1/lib/python3.6/site-packages/setuptools/command/easy_install.py", line 668, in easy_install
    raise DistutilsError(msg)
distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('incremental>=16.10.1')
 ----------------------------------------

Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/9r/3b500gbs3093ms87mqqbckr80000gn/T/pip-build-lqvxc68n/twisted/

运行openssl s_client -showcerts -connect pypi.python.org:443 返回以下内容:

 CONNECTED(00000003)
 depth=1 /C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 Extended     Validation Server CA
 verify error:num=20:unable to get local issuer certificate
 verify return:0
 ---
 Certificate chain
  0 s:/businessCategory=Private Organization/1.3.6.1.4.1.311.60.2.1.3=US/1.3.6.1.4.1.311.60.2.1.2=Delaware/serialNumber=3359300/street=16 Allen    Rd/postalCode=03894-4801/C=US/ST=NH/L=Wolfeboro/O=Python Software Foundation/CN=www.python.org
  i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 Extended Validation Server CA
  -----BEGIN CERTIFICATE-----
  MIIIWjCCB0KgAwIBAgIQCXCW7BLw16II/CMOsOFe/jANBgkqhkiG9w0BAQsFADB1
  ..
 -----END CERTIFICATE-----
 1 s:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 Extended Validation Server CA
 i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert High Assurance EV Root CA
 -----BEGIN CERTIFICATE-----
MIIEtjCCA56gAwIBAgIQDHmpRLCMEZUgkmFf4msdgzANBgkqhkiG9w0BAQsFADBs
....
-----END CERTIFICATE-----
 Server certificate
 subject=/businessCategory=Private Organization/1.3.6.1.4.1.311.60.2.1.3=US/1.3.6.1.4.1.311.60.2.1.2=Delaware/serialNumber=3359300/street=16 Allen Rd/postalCode=03894-4801/C=US/ST=NH/L=Wolfeboro/O=Python Software Foundation/CN=www.python.org
issuer=/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 Extended  Validation Server CA
---
No client certificate CA names sent
---
SSL handshake has read 3524 bytes and written 456 bytes
---
New, TLSv1/SSLv3, Cipher is AES128-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
Protocol  : TLSv1
Cipher    : AES128-SHA
Session-ID: BC7695FF86D2B82B20468A13E3F3E13AE23776B500E64665305EEBAF49BB54D1
Session-ID-ctx: 
Master-Key:8D25B34237A3C74E90317D87BA74A2AAF0E8C424FB2ADE3D72E5F234D5E043C4527641290B928B3A22 1BE7D44116CFB1
Key-Arg   : None
Start Time: 1487035770
Timeout   : 300 (sec)
Verify return code: 0 (ok)

Answer 1

我在Mac OSX 10.11.6上使用全新安装的Python3.6.1在新的virtualenv中遇到了同样的问题.在我的情况下,我安装了旧版本的Twisted依赖增量,这阻止了安装.

pip install --upgrade incremental
pip install Twisted

注意I:我从需求文件中安装了一整套软件包,其中指定了相同的增量版本.我真的很想知道为什么增量的升级有助于并且不知道究竟出了什么问题.如果有人能澄清,那就太好了.

注意II:在新安装时,在Twisted之前安装增量似乎也是必要的[使用CentOS7时经验丰富].

注意三:问题已经传达给了惊人的Twisted社区,一旦实施了扭曲的机票#9457,在发布这个问题时我的答案应该过时了.

Answer 2

尝试升级 pip 包。

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sudo pip install --upgrade pip\n

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Twisted 有两个必需的依赖项：

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安装 C 编译器\n由于从源代码安装 Twisted 涉及编译 C 代码，因此在 OS X 或 Windows 上，\xe2\x80\x99 需要先安装 C 编译器，然后才能安装 Twisted。

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安装 zope.interface \n从源代码安装时，在使用 Twisted 之前，\xe2\x80\x99 还需要安装 zope.interface，您可以从 Twisted 主页下载它。

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并按照您的步骤安装它或点击此链接

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