featuretools.primitives.NumTrueSinceLastFalse#

class featuretools.primitives.NumTrueSinceLastFalse[source]#

Calculates the number of True values since the last False value.

Description:

From a series of Booleans, find the last record with a False value. Return the count of True values between that record and the end of the series. Return nan if no values are False. Any nan values in the input are ignored. A False value in the last row will result in a count of 0.

Examples

>>> num_true_since_last_false = NumTrueSinceLastFalse()
>>> num_true_since_last_false([False, True, False, True, True])
2
__init__()#

Methods

__init__()

flatten_nested_input_types(input_types)

Flattens nested column schema inputs into a single list.

generate_name(base_feature_names, ...)

generate_names(base_feature_names, ...)

get_args_string()

get_arguments()

get_description(input_column_descriptions[, ...])

get_filepath(filename)

get_function()

Attributes

base_of

base_of_exclude

commutative

default_value

Default value this feature returns if no data found.

description_template

input_types

woodwork.ColumnSchema types of inputs

max_stack_depth

name

Name of the primitive

number_output_features

Number of columns in feature matrix associated with this feature

return_type

ColumnSchema type of return

stack_on

stack_on_exclude

stack_on_self

uses_calc_time