Glossary of Expectations¶
Dataset¶
Dataset objects model tabular data and include expectations with row and column semantics. Many Dataset expectations are implemented using column_map_expectation and column_aggregate_expectation decorators.
Table shape¶
expect_column_to_exist
expect_table_columns_to_match_ordered_list
expect_table_row_count_to_be_between
expect_table_row_count_to_equal
Missing values, unique values, and types¶
expect_column_values_to_be_unique
expect_column_values_to_not_be_null
expect_column_values_to_be_null
expect_column_values_to_be_of_type
expect_column_values_to_be_in_type_list
Sets and ranges¶
expect_column_values_to_be_in_set
expect_column_values_to_not_be_in_set
expect_column_values_to_be_between
expect_column_values_to_be_increasing
expect_column_values_to_be_decreasing
String matching¶
expect_column_value_lengths_to_be_between
expect_column_value_lengths_to_equal
expect_column_values_to_match_regex
expect_column_values_to_not_match_regex
expect_column_values_to_match_regex_list
expect_column_values_to_not_match_regex_list
Datetime and JSON parsing¶
expect_column_values_to_match_strftime_format
expect_column_values_to_be_dateutil_parseable
expect_column_values_to_be_json_parseable
expect_column_values_to_match_json_schema
Aggregate functions¶
expect_column_mean_to_be_between
expect_column_median_to_be_between
expect_column_stdev_to_be_between
expect_column_unique_value_count_to_be_between
expect_column_proportion_of_unique_values_to_be_between
expect_column_most_common_value_to_be_in_set
expect_column_max_to_be_between
expect_column_min_to_be_between
expect_column_sum_to_be_between
Column pairs¶
expect_column_pair_values_A_to_be_greater_than_B
expect_column_pair_values_to_be_equal
expect_column_pair_values_to_be_in_set
Distributional functions¶
expect_column_kl_divergence_to_be_less_than
expect_column_bootstrapped_ks_test_p_value_to_be_greater_than
expect_column_chisquare_test_p_value_to_be_greater_than
expect_column_parameterized_distribution_ks_test_p_value_to_be_greater_than
FileDataAsset¶
File data assets reason at the file level, and the line level (for text data).