def dockerignore(filename='.dockerignore'):
    """
    Returns a simple Python `.dockerignore`
    """
    with open(filename, 'w') as f:
        f.write(
            """__pycache__
*.pyc
*.pyo
*.pyd
.Python
env
pip-log.txt
pip-delete-this-directory.txt
.tox
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*,cover
*.log
.git"""
            )
