featuretools.primitives.
TimeSincePrevious
Compute the time since the previous entry in a list.
unit (str) – Defines the unit of time to count from. Defaults to Seconds. Acceptable values: years, months, days, hours, minutes, seconds, milliseconds, nanoseconds
Given a list of datetimes, compute the time in seconds elapsed since the previous item in the list. The result for the first item in the list will always be NaN.
Examples
>>> from datetime import datetime >>> time_since_previous = TimeSincePrevious() >>> dates = [datetime(2019, 3, 1, 0, 0, 0), ... datetime(2019, 3, 1, 0, 2, 0), ... datetime(2019, 3, 1, 0, 3, 0), ... datetime(2019, 3, 1, 0, 2, 30), ... datetime(2019, 3, 1, 0, 10, 0)] >>> time_since_previous(dates).tolist() [nan, 120.0, 60.0, -30.0, 450.0]
__init__
Initialize self. See help(type(self)) for accurate signature.
Methods
__init__([unit])
Initialize self.
generate_name(base_feature_names)
generate_name
generate_names(base_feature_names)
generate_names
get_args_string()
get_args_string
get_arguments()
get_arguments
get_description(input_column_descriptions[, …])
get_description
get_filepath(filename)
get_filepath
get_function()
get_function
Attributes
base_of
base_of_exclude
commutative
compatibility
default_value
description_template
input_types
max_stack_depth
name
number_output_features
uses_calc_time
uses_full_entity