featuretools.primitives.
TimeSinceLast
Calculates the time elapsed since the last datetime (default in seconds).
Given a list of datetimes, calculate the time elapsed since the last datetime (default in seconds). Uses the instance’s cutoff time.
unit (str) – Defines the unit of time to count from. Defaults to seconds. Acceptable values: years, months, days, hours, minutes, seconds, milliseconds, nanoseconds
Examples
>>> from datetime import datetime >>> time_since_last = TimeSinceLast() >>> cutoff_time = datetime(2010, 1, 1, 12, 0, 0) >>> times = [datetime(2010, 1, 1, 11, 45, 0), ... datetime(2010, 1, 1, 11, 55, 15), ... datetime(2010, 1, 1, 11, 57, 30)] >>> time_since_last(times, time=cutoff_time) 150.0
>>> from datetime import datetime >>> time_since_last = TimeSinceLast(unit = "minutes") >>> cutoff_time = datetime(2010, 1, 1, 12, 0, 0) >>> times = [datetime(2010, 1, 1, 11, 45, 0), ... datetime(2010, 1, 1, 11, 55, 15), ... datetime(2010, 1, 1, 11, 57, 30)] >>> time_since_last(times, time=cutoff_time) 2.5
__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([agg_type])
get_function
Attributes
base_of
base_of_exclude
commutative
compatibility
default_value
description_template
input_types
max_stack_depth
name
number_output_features
stack_on
stack_on_exclude
stack_on_self
uses_calc_time