def datetime_format_to_js_datetime_format(format):
    """
    Convert a Python datetime format to a time format suitable for use with
    the datetime picker we use, http://www.malot.fr/bootstrap-datetimepicker/.
    """
    converted = format
    replacements = {
        '%Y': 'yyyy',
        '%y': 'yy',
        '%m': 'mm',
        '%d': 'dd',
        '%H': 'hh',
        '%I': 'HH',
        '%M': 'ii',
        '%S': 'ss',
    }
    for search, replace in replacements.items():
        converted = converted.replace(search, replace)

    return converted.strip()