autoflake.py
def unused_variable_line_numbers(messages):
    """Yield line numbers of unused variables."""
    for message in messages:
        if isinstance(message, pyflakes.messages.UnusedVariable):
            yield message.lineno
def unused_variable_line_numbers(messages):
    """Yield line numbers of unused variables."""
    for message in messages:
        if isinstance(message, pyflakes.messages.UnusedVariable):
            yield message.lineno
Yield line numbers of unused variables.