我正在尝试使用子进程在python中打开pipenv virtualenv。我知道我在正确的目录中，但是pipenv一直在父目录中打开。每次我通过做物理删除父虚拟环境时，rm -r $home/.local/share/virtualenvs/.....我验证它们是否已删除。 这是我正在使用的代码：
import os
import subprocess
def test():
os.chdir('/home/.../example')
subprocess.run('ls')
# works correctly, in proper directory
subprocess.run('pipenv install django')
# doesn't work correctly as it installs in parent directory
如何解决此问题？
subprocess.run是基于subprocess.Popen，并将大部分参数传递给它。现在运行时help(subprocess.Popen)：
class Popen(builtins.object)
| Popen(args, [...] cwd=None [...])
^^^^^^^^
您可以设置工作目录。
此外，还应使用列表来传递要执行的命令。即：
subprocess.run(['pipenv', 'install', 'django'])
这减少了错误。您可以使用shlex.split自动执行此操作。
Help on function run in module subprocess:
run(*popenargs, input=None, capture_output=False, timeout=None, check=False, **kwargs)
Run command with arguments and return a CompletedProcess instance.
The returned instance will have attributes args, returncode, stdout and
stderr. By default, stdout and stderr are not captured, and those attributes
will be None. Pass stdout=PIPE and/or stderr=PIPE in order to capture them.
If check is True and the exit code was non-zero, it raises a
CalledProcessError. The CalledProcessError object will have the return code
in the returncode attribute, and output & stderr attributes if those streams
were captured.
If timeout is given, and the process takes too long, a TimeoutExpired
exception will be raised.
There is an optional argument "input", allowing you to
pass bytes or a string to the subprocess's stdin. If you use this argument
you may not also use the Popen constructor's "stdin" argument, as
it will be used internally.
By default, all communication is in bytes, and therefore any "input" should
be bytes, and the stdout and stderr will be bytes. If in text mode, any
"input" should be a string, and stdout and stderr will be strings decoded
according to locale encoding, or by "encoding" if set. Text mode is
triggered by setting any of text, encoding, errors or universal_newlines.
The other arguments are the same as for the Popen constructor.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^