Handling blanks

Sometimes it's fine to have blanks in a file, and in this case you can specify the skip_blank parameter in the config:

config = {"rules": [
	{
		"rule_type": "Date",
		"field": "Name"
		"params": {
			"fallback_mode": "remove_record",
			"date_format": "%s",
			"range_check": "rolling",
			"range_minimum": -7,
			"range_maximum": 0,
			"skip_blank": True
		},
	}
]}

Where there are significant blanks in categorical data, you can use the lookalike match field to fill these automatically: