"""
Check that certain modules are not loaded by `import pandas`
"""
import sys

blacklist = {
    'bs4',
    'html5lib',
    'ipython',
    'jinja2'
    'lxml',
    'numexpr',
    'openpyxl',
    'py',
    'pytest',
    's3fs',
    'scipy',
    'tables',
    'xlrd',
    'xlsxwriter',
    'xlwt',
}


def main():
    import pandas  # noqa

    modules = set(x.split('.')[0] for x in sys.modules)
    imported = modules & blacklist
    if modules & blacklist:
        sys.exit("Imported {}".format(imported))


if __name__ == '__main__':
    main()