virtualEnvironment/lib/python2.7/site-packages/pip/utils/__init__.py
def find_command(cmd, paths=None, pathext=None):
    """Searches the PATH for the given command and returns its path"""
    if paths is None:
        paths = os.environ.get('PATH', '').split(os.pathsep)
    if isinstance(paths, six.string_types):
        paths = [paths]
    # check if there are funny path extensions for executables, e.g. Windows
    if pathext is None:
        pathext = get_pathext()
    pathext = [ext for ext in pathext.lower().split(os.pathsep) if len(ext)]
    # don't use extensions if the command ends with one of them
    if os.path.splitext(cmd)[1].lower() in pathext:
        pathext = ['']
    # check if we find the command on PATH
    for path in paths:
        # try without extension first
        cmd_path = os.path.join(path, cmd)
        for ext in pathext:
            # then including the extension
            cmd_path_ext = cmd_path + ext
            if os.path.isfile(cmd_path_ext):
                return cmd_path_ext
        if os.path.isfile(cmd_path):
            return cmd_path
    raise BadCommand('Cannot find command %r' % cmd)
def find_command(cmd, paths=None, pathext=None):
    if paths is None:
        paths = os.environ.get('PATH', '').split(os.pathsep)
    if isinstance(paths, six.string_types):
        paths = [paths]
    # check if there are funny path extensions for executables, e.g. Windows
    if pathext is None:
        pathext = get_pathext()
    pathext = [ext for ext in pathext.lower().split(os.pathsep) if len(ext)]
    # don't use extensions if the command ends with one of them
    if os.path.splitext(cmd)[1].lower() in pathext:
        pathext = ['']
    # check if we find the command on PATH
    for path in paths:
        # try without extension first
        cmd_path = os.path.join(path, cmd)
        for ext in pathext:
            # then including the extension
            cmd_path_ext = cmd_path + ext
            if os.path.isfile(cmd_path_ext):
                return cmd_path_ext
        if os.path.isfile(cmd_path):
            return cmd_path
    raise BadCommand('Cannot find command %r' % cmd)
def find_command ( cmd , paths = None , pathext = None ) : if paths is None : paths = os . environ . get ( 'PATH' , '' ) . split ( os . pathsep ) if isinstance ( paths , six . string_types ) : paths = [ paths ] # check if there are funny path extensions for executables, e.g. Windows if pathext is None : pathext = get_pathext ( ) pathext = [ ext for ext in pathext . lower ( ) . split ( os . pathsep ) if len ( ext ) ] # don't use extensions if the command ends with one of them if os . path . splitext ( cmd ) [ 1 ] . lower ( ) in pathext : pathext = [ '' ] # check if we find the command on PATH for path in paths : # try without extension first cmd_path = os . path . join ( path , cmd ) for ext in pathext : # then including the extension cmd_path_ext = cmd_path + ext if os . path . isfile ( cmd_path_ext ) : return cmd_path_ext if os . path . isfile ( cmd_path ) : return cmd_path raise BadCommand ( 'Cannot find command %r' % cmd )
Searches the PATH for the given command and returns its path
Searches the PATH for the given command and returns its path