pylint/epylint.py
def lint(filename, options=()):
    """Pylint the given file.

    When run from emacs we will be in the directory of a file, and passed its
    filename.  If this file is part of a package and is trying to import other
    modules from within its own package or another package rooted in a directory
    below it, pylint will classify it as a failed import.

    To get around this, we traverse down the directory tree to find the root of
    the package this module is in.  We then invoke pylint from this directory.

    Finally, we must correct the filenames in the output generated by pylint so
    Emacs doesn't become confused (it will expect just the original filename,
    while pylint may extend it with extra directories if we've traversed down
    the tree)
    """
    # traverse downwards until we are out of a python package
    full_path = osp.abspath(filename)
    parent_path = osp.dirname(full_path)
    child_path = osp.basename(full_path)

    while parent_path != "/" and osp.exists(osp.join(parent_path, "__init__.py")):
        child_path = osp.join(osp.basename(parent_path), child_path)
        parent_path = osp.dirname(parent_path)

    # Start pylint
    # Ensure we use the python and pylint associated with the running epylint
    run_cmd = "import sys; from pylint.lint import Run; Run(sys.argv[1:])"
    cmd = (
        [sys.executable, "-c", run_cmd]
        + [
            "--msg-template",
            "{path}:{line}: {category} ({msg_id}, {symbol}, {obj}) {msg}",
            "-r",
            "n",
            child_path,
        ]
        + list(options)
    )
    process = Popen(
        cmd, stdout=PIPE, cwd=parent_path, env=_get_env(), universal_newlines=True
    )

    for line in process.stdout:
        # remove pylintrc warning
        if line.startswith("No config file found"):
            continue

        # modify the file name thats output to reverse the path traversal we made
        parts = line.split(":")
        if parts and parts[0] == child_path:
            line = ":".join([filename] + parts[1:])
        print(line, end=" ")

    process.wait()
    return process.returncode
def lint(filename, options=()):
    """Pylint the given file.

    When run from emacs we will be in the directory of a file, and passed its
    filename.  If this file is part of a package and is trying to import other
    modules from within its own package or another package rooted in a directory
    below it, pylint will classify it as a failed import.

    To get around this, we traverse down the directory tree to find the root of
    the package this module is in.  We then invoke pylint from this directory.

    Finally, we must correct the filenames in the output generated by pylint so
    Emacs doesn't become confused (it will expect just the original filename,
    while pylint may extend it with extra directories if we've traversed down
    the tree)
    """
    # traverse downwards until we are out of a python package
    full_path = osp.abspath(filename)
    parent_path = osp.dirname(full_path)
    child_path = osp.basename(full_path)

    while parent_path != "/" and osp.exists(osp.join(parent_path, "__init__.py")):
        child_path = osp.join(osp.basename(parent_path), child_path)
        parent_path = osp.dirname(parent_path)

    # Start pylint
    # Ensure we use the python and pylint associated with the running epylint
    run_cmd = "import sys; from pylint.lint import Run; Run(sys.argv[1:])"
    cmd = (
        [sys.executable, "-c", run_cmd]
        + [
            "--msg-template",
            "{path}:{line}: {category} ({msg_id}, {symbol}, {obj}) {msg}",
            "-r",
            "n",
            child_path,
        ]
        + list(options)
    )
    process = Popen(
        cmd, stdout=PIPE, cwd=parent_path, env=_get_env(), universal_newlines=True
    )

    for line in process.stdout:
        # remove pylintrc warning
        if line.startswith("No config file found"):
            continue

        # modify the file name thats output to reverse the path traversal we made
        parts = line.split(":")
        if parts and parts[0] == child_path:
            line = ":".join([filename] + parts[1:])
        print(line, end=" ")

    process.wait()
    return process.returncode
Pylint the given file.

    When run from emacs we will be in the directory of a file, and passed its
    filename.  If this file is part of a package and is trying to import other
    modules from within its own package or another package rooted in a directory
    below it, pylint will classify it as a failed import.

    To get around this, we traverse down the directory tree to find the root of
    the package this module is in.  We then invoke pylint from this directory.

    Finally, we must correct the filenames in the output generated by pylint so
    Emacs doesn't become confused (it will expect just the original filename,
    while pylint may extend it with extra directories if we've traversed down
    the tree)