安装罂粟0.3时KeyError 'pytest‘

Question

在使用pip安装罂粟0.3时，在需要的所有资源中，我得到了一些关于Astropy反推荐警告和pysynphot的警告，但我并不真正理解这些警告。在失败前的最后几行中，跟踪显示错误位于不稳定的setup_helpers文件中。下一行是KeyError 'pytest‘。有没有人经历过这个或对我的处境有任何洞察力？

这是命令提示符：

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\psteffanic>pip install poppy --upgrade
Downloading/unpacking poppy 
  Running setup.py (path:c:\users\psteff~1\appdata\local\temp\pip_build_psteffan
ic\poppy\setup.py) egg_info for package poppy
    WARNING: AstropyDeprecationWarning: ConfigurationItem has been deprecated in
 astropy 0.4. Use ConfigItem objects as members of ConfigNamespace subclasses in
stead.  See ConfigNamespace for an example. [astropy.config.configuration]
    C:\Python27\lib\site-packages\pysynphot\locations.py:14: UserWarning: PYSYN_
CDBS is undefined; functionality will be SEVERELY crippled.
      warnings.warn("PYSYN_CDBS is undefined; functionality will be SEVERELY "
    C:\Python27\lib\site-packages\pysynphot\locations.py:74: UserWarning: Extinc
tion files should be moved to $PYSYN_CDBS/extinction for compatibility with futu
re versions of pysynphot.
      warnings.warn('Extinction files should be moved to '
    C:\Python27\lib\site-packages\pysynphot\locations.py:110: UserWarning: Extin
ction files not found in grid\extinction
      warnings.warn('Extinction files not found in %s' % (extdir,))
    C:\Python27\lib\site-packages\pysynphot\locations.py:88: UserWarning: PYSYN_
CDBS is undefined; cannot find mtab\*_tmg.fits file
      warnings.warn("PYSYN_CDBS is undefined; cannot find %s file" % template)
    C:\Python27\lib\site-packages\pysynphot\locations.py:88: UserWarning: PYSYN_
CDBS is undefined; cannot find mtab\*_tmc.fits file
      warnings.warn("PYSYN_CDBS is undefined; cannot find %s file" % template)
    C:\Python27\lib\site-packages\pysynphot\locations.py:88: UserWarning: PYSYN_
CDBS is undefined; cannot find mtab\*_tmt.fits file
      warnings.warn("PYSYN_CDBS is undefined; cannot find %s file" % template)
   WARNING: AstropyDeprecationWarning: astropy.setup_helpers.update_package_fil
es is deprecated.  Update your setup.py to use astropy.setup_helpers.get_package
_info instead. [astropy.setup_helpers]

Installing collected packages: poppy
  Running setup.py install for poppy
    generating default poppy.cfg file in poppy\poppy.cfg
    WARNING: AstropyDeprecationWarning: ConfigurationItem has been deprecated in
 astropy 0.4. Use ConfigItem objects as members of ConfigNamespace subclasses in
stead.  See ConfigNamespace for an example. [astropy.config.configuration]
    C:\Python27\lib\site-packages\pysynphot\locations.py:14: UserWarning: PYSYN_
CDBS is undefined; functionality will be SEVERELY crippled.
      warnings.warn("PYSYN_CDBS is undefined; functionality will be SEVERELY "
    C:\Python27\lib\site-packages\pysynphot\locations.py:74: UserWarning: Extinc
tion files should be moved to $PYSYN_CDBS/extinction for compatibility with futu
re versions of pysynphot.
      warnings.warn('Extinction files should be moved to '
    C:\Python27\lib\site-packages\pysynphot\locations.py:110: UserWarning: Extin
ction files not found in grid\extinction
      warnings.warn('Extinction files not found in %s' % (extdir,))
    C:\Python27\lib\site-packages\pysynphot\locations.py:88: UserWarning: PYSYN_
CDBS is undefined; cannot find mtab\*_tmg.fits file
       warnings.warn("PYSYN_CDBS is undefined; cannot find %s file" % template)
     C:\Python27\lib\site-packages\pysynphot\locations.py:88: UserWarning: PYSYN_
CDBS is undefined; cannot find mtab\*_tmc.fits file
      warnings.warn("PYSYN_CDBS is undefined; cannot find %s file" % template)
    C:\Python27\lib\site-packages\pysynphot\locations.py:88: UserWarning: PYSYN_
CDBS     is undefined; cannot find mtab\*_tmt.fits file
      warnings.warn("PYSYN_CDBS is undefined; cannot find %s file" % template)
    WARNING: AstropyDeprecationWarning: astropy.setup_helpers.update_package_fil
es is deprecated.  Update your setup.py to use astropy.setup_helpers.get_package
_info instead. [astropy.setup_helpers]
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "c:\users\psteff~1\appdata\local\temp\pip_build_psteffanic\poppy\setu
p.py", line 144, in <module>
        use_2to3=False
      File "C:\Python27\lib\distutils\core.py", line 151, in setup
        dist.run_commands()
      File "C:\Python27\lib\distutils\dist.py", line 953, in run_commands
        self.run_command(cmd)
      File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
        cmd_obj.run()
      File "C:\Python27\lib\site-packages\distribute-0.6.32-py2.7.egg\setuptools
\command\install.py", line 53, in run
        return _install.run(self)
       File "C:\Python27\lib\distutils\command\install.py", line 563, in run
        self.run_command('build')
      File "C:\Python27\lib\distutils\cmd.py", line 326, in run_command
        self.distribution.run_command(command)
      File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
        cmd_obj.run()
      File "C:\Python27\lib\distutils\command\build.py", line 127, in run
        self.run_command(cmd_name)
      File "C:\Python27\lib\distutils\cmd.py", line 326, in run_command
        self.distribution.run_command(command)
      File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
        cmd_obj.run()
       File "C:\Python27\lib\site-packages\astropy-0.4-py2.7-win32.egg\astropy\se
tup_helpers.py", line 623, in run
        for k, (fnsrc, v) in six.iteritems(self.distribution.command_options['py
test']):
    KeyError: 'pytest'
   Record file c:\users\psteff~1\appdata\local\temp\pip-lze5cj-record\install-rec
 ord.txt not found
Successfully installed poppy 
Cleaning up...

C:\Users\psteffanic>

Answer 1

这看起来像是两件事的结合：

( 1)在罂粟正在使用的Astropy构建代码中，它看起来可能是一个小错误。

( 2)看来罂粟还没有完全兼容Astropy的最新版本(v0.4)，因此在此期间，您可以尝试降级到Astropy v0.3.2，如果没有其他的话。

同时，您应该就这样的问题与软件包的作者联系。