� !A?hs � �8 � d Z ddlZ G d� d� � Zd� Zd� ZdS )z� Basic subprocess implementation for POSIX which only uses os functions. Only implement features required by setup.py to build C extension modules when subprocess is unavailable. setup.py is not used on Windows. � Nc � � e Zd Zdd�Zd� ZdS )�PopenNc �0 � || _ || _ d | _ d S �N)�_cmd�_env� returncode)�self�cmd�envs �