在win 10上，我将安装到py 3.6 venv。从终端
pip install --upgrade git+git://github.com/larochew/py_daemoniker.git@cfd8a669975c217f6df7063be8cb8fbc08b5f0df#egg=daemoniker
工作良好：
Connected to pydev debugger (build 192.5728.105)
Running command git clone -q git://github.com/larochew/py_daemoniker.git 'C:\Users\user\AppData\Local\Temp\pip-install-g9do107m\daemoniker'
Collecting daemoniker
Cloning git://github.com/larochew/py_daemoniker.git (to revision cfd8a669975c217f6df7063be8cb8fbc08b5f0df) to c:\users\user\appdata\local\temp\pip-install-g9do107m\daemoniker
Running command git checkout -q cfd8a669975c217f6df7063be8cb8fbc08b5f0df
Installing collected packages: daemoniker
Running setup.py install for daemoniker: started
Running setup.py install for daemoniker: finished with status 'done'
Successfully installed daemoniker-0.2.3
但是从代码：
try:
from pip import main as pipmain
except:
from pip._internal import main as pipmain
pipmain.main(['install', '--upgrade', 'git+git://github.com/larochew/py_daemoniker.git@cfd8a669975c217f6df7063be8cb8fbc08b5f0df#egg=daemoniker'])
结果是：
Collecting daemoniker
Cloning git://github.com/larochew/py_daemoniker.git (to revision cfd8a669975c217f6df7063be8cb8fbc08b5f0df) to c:\users\user\appdata\local\temp\pip-install-64iunozy\daemoniker
Running command git clone -q git://github.com/larochew/py_daemoniker.git 'C:\Users\user\AppData\Local\Temp\pip-install-64iunozy\daemoniker'
Running command git checkout -q cfd8a669975c217f6df7063be8cb8fbc08b5f0df
ERROR: Could not install packages due to an EnvironmentError: [Errno 2] No such file or directory: 'C:\\Users\\user\\AppData\\Local\\Temp\\pip-req-tracker-qu0hrtol\\9eeeef850bab53900fe60a86b33217ba700f6f3907aadc10a37ed11f'
尽管安装了普通软件包，但没有错误。
由于我需要从Windows下的代码静默安装需求，因此以下代码可以解决问题：
subprocess.check_call(
[executable, '-m', 'pip', 'install', '--upgrade', '-r', config['requirements_file']],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE
)
如果没有stdout=subprocess.PIPEpd的stdout，将进入当前进程。同样，这不会在win中创建终端。Thnx将领导@sinoroc评论
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我来说两句