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편집 파일: __init__.cpython-37.pyc
B � f R � @ s� d Z ddlZddlZddlZddlZddlZddlZddlZe�e �Z G dd� d�Z ddd�Z ddd �Z e d kr�d Zye � dZW n4 ek r� Z zed e ejd � W ddZ[X Y nX e�e� dS )z� Virtual environment (venv) package for Python. Based on PEP 405. Copyright (C) 2011-2014 Vinay Sajip. Licensed to the PSF under a contributor agreement. � Nc @ s� e Zd ZdZd dd�Zdd� Zdd � Zd d � Zd d � Ze j dkrLd dd�Z n d dd�Z dd� Z dd� Z dd� Zdd� Zdd� Zd d � ZdS )!� EnvBuildera� This class exists to allow virtual environment creation to be customized. The constructor parameters determine the builder's behaviour when called upon to create a virtual environment. By default, the builder makes the system (global) site-packages dir *un*available to the created environment. If invoked using the Python -m option, the default is to use copying on Windows platforms but symlinks elsewhere. If instantiated some other way, the default is to *not* use symlinks. :param system_site_packages: If True, the system (global) site-packages dir is available to created environments. :param clear: If True, delete the contents of the environment directory if it already exists, before environment creation. :param symlinks: If True, attempt to symlink rather than copy files into virtual environment. :param upgrade: If True, upgrade an existing virtual environment. :param with_pip: If True, ensure pip is installed in the virtual environment :param prompt: Alternative terminal prefix for the environment. FNc C s( || _ || _|| _|| _|| _|| _d S )N)�system_site_packages�clear�symlinks�upgrade�with_pip�prompt)�selfr r r r r r � r �2/opt/alt/python37/lib64/python3.7/venv/__init__.py�__init__+ s zEnvBuilder.__init__c C sx t j�|�}| �|�}| j}d| _| �|� | �|� | jrF| �|� | j s`| � |� | � |� |rtd| _| �|� dS )z� Create a virtual environment in a directory. :param env_dir: The target directory to create an environment in. 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Returns a context object which holds paths in the environment, for use by subsequent logic. c S s@ t j�| �st �| � n$t j�| �s0t j�| �r<td| ��d S )Nz Unable to create directory %r)r r �exists�makedirsr r � ValueError)�dr r r �create_if_needed^ s z7EnvBuilder.ensure_directories.<locals>.create_if_needed� Nz(%s) �_base_executableZwin32ZScriptsZInclude�Libz site-packages�binZinclude�libz python%d.%d� l �posix�darwin�lib64) r r r" r r! �types�SimpleNamespacer �split�env_namer �environ�getattr�sys� executabler � python_dirZ python_exe�platformr � version_infoZinc_path�maxsize�name�symlink�bin_path�bin_name�env_exe)r r r& r r �envr7 �dirnameZexenameZbinnameZincpathZlibpathr Z link_path�binpathr r r r V sJ z EnvBuilder.ensure_directoriesc C sz t j�|jd� |_}t|ddd��L}|�d|j � | jrBd}nd}|�d| � |�d t j d d � � W d Q R X d S ) aA Create a configuration file indicating where the environment's Python was copied from, and whether the system site-packages should be made available in the environment. :param context: The information for the environment creation request being processed. z pyvenv.cfg�wzutf-8)�encodingz home = %s �trueZfalsez"include-system-site-packages = %s zversion = %d.%d.%d N� ) r r r r Zcfg_path�open�writer8 r r6 r: )r r r �fZinclr r r r � s z EnvBuilder.create_configuration�ntc C s� | j }|s�yRtj�|�s\|rPtj�|�tj�|�ks:t�t�tj�|�|� n t�||� W n& tk r� t � d||� d}Y nX |r�t � ||� dS )zY Try symlinking a file, and if that fails, fall back to copying. zUnable to symlink %r to %rTN) r r r r rB �AssertionErrorr= �basename� Exception�logger�warningr �copyfile)r �src�dst�relative_symlinks_okZ force_copyr r r �symlink_or_copy� s zEnvBuilder.symlink_or_copyc C sz t j�|�ot j�|� }| jr�|s�t j�|�s�yF|rht j�|�t j�|�ksRt�t �t j� |�|� n t �||� dS t k r� t � d||� Y nX t j� t j� |��\}}t j�t j�t�dd|| �}t�d�s�t j�|��sB|�d��rd| }|dd� }|dk�rd }n|d k�r&d }t j�t j�|�|| �}n|}t j�|��sj|�sft � d |� dS t�||� dS ) zY Try symlinking a file, and if that fails, fall back to copying. NzUnable to symlink %r to %r�scriptsrK TZ_d����pythonZ venvlauncherZpythonwZ venvwlauncherzUnable to copy %r)r r �lexistsr" r r rB rL r= rM rN rO rP �splitextr �__file__� sysconfig�is_python_buildr �endswithr rQ )r rR rS rT Zbad_srcrM ZextZsrcfnr r r rU � s< c C s� |j }|j}| j}|j}tjdkr�||j|� tj�|�sFt� |d� xNdD ]F}tj� ||�}tj� |�sL||j|dd� tj�|�sLt� |d� qLW �n| j r�dd� t� |�D �}t�d�r�dd� |D �}n d d d d g}x:|D ]2}tj� ||�}tj�|�r�||tj� ||�� q�W t�d��r�x�t�|j�D ]v\} } } d | k�r0tj�| �} tj� |jd| �} tj� | ��szt�| � tj� | d �}tj� | d �} t�|| � P �q0W dS )z� Set up a Python executable in the environment. :param context: The information for the environment creation request being processed. rK i� )rX Zpython3T)rT c S s, g | ]$}t j�t j�|�d �dkr|�qS )r' )z.exez.dll)r r �normcaserZ )�.0rJ r r r � <listcomp>� s z+EnvBuilder.setup_python.<locals>.<listcomp>c S s" g | ]}t j�|��d �r|�qS ))rX Z vcruntime)r r r_ � startswith)r` rJ r r r ra s z python.exez python_d.exez pythonw.exez pythonw_d.exezinit.tclr) N)r> r@ rU r8 r r< r7 r r �chmodr r" r r r\ r] rY �walkrM r r# r rQ )r r rC r ZcopierrB �suffix�suffixesrR �root�dirs�filesZtcldirrS r r r r � sF zEnvBuilder.setup_pythonc C s$ |j ddddg}tj|tjd� dS )z1Installs or upgrades pip in a virtual environmentz-ImZ ensurepipz --upgradez --default-pip)�stderrN)r@ � subprocessZ check_outputZSTDOUT)r r �cmdr r r r s zEnvBuilder._setup_pipc C s2 t j�t j�t��}t j�|d�}| �||� dS )a� Set up scripts into the created environment from a directory. This method installs the default scripts into the environment being created. You can prevent the default installation by overriding this method if you really need to, or if you need to specify a different location for the scripts to install. By default, the 'scripts' directory in the venv package is used as the source of scripts to install. rV N)r r r rB r[ r �install_scripts)r r r r r r r " s zEnvBuilder.setup_scriptsc C s dS )a Hook for post-setup modification of the venv. Subclasses may install additional packages or scripts here, add activation shell scripts, etc. :param context: The information for the environment creation request being processed. Nr )r r r r r r 1 s zEnvBuilder.post_setupc C sJ |� d|j�}|� d|j�}|� d|j�}|� d|j�}|� d|j�}|S )ai Replace variable placeholders in script text with context-specific variables. Return the text passed in , but with variables replaced. :param text: The text in which to replace placeholder variables. :param context: The information for the environment creation request being processed. Z __VENV_DIR__Z __VENV_NAME__Z__VENV_PROMPT__Z__VENV_BIN_NAME__Z__VENV_PYTHON__)�replacer r3 r r? r@ )r �textr r r r �replace_variables; s z EnvBuilder.replace_variablesc C s� |j }t|�}�x�t�|�D �]�\}}}||kr`x,|dd� D ] }|dtjfkr>|�|� q>W q �xR|D �]H} tjdkr�| �d�r�| �d�r�qhtj� || �} ||d� � tj �dd� } | s�|} ntjj |f| �� } tj� | �s�t� | � tj� | | �} t| d��} | �� }W dQ R X | �d��s~y$|�d�}| �||�}|�d�}W n6 tk �r| } zd}t�d | |� W dd}~X Y nX |dk rht| d ��} | �|� W dQ R X t�| | � qhW q W dS ) as Install scripts into the created environment from a directory. :param context: The information for the environment creation request being processed. :param path: Absolute pathname of a directory containing script. Scripts in the 'common' subdirectory of this directory, and those in the directory named for the platform being run on, are installed in the created environment. Placeholder variables are replaced with environment- specific values. 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