zcollection.merging.period.Period.expand#

Period.expand(duration)[source]#

Expand the size of the period by the duration on both ends.

So before expand:

        [-------]
^   ^   ^   ^   ^   ^  ^
1   2   3   4   5   6  7

After expand(2):

[----------------------]
^   ^   ^   ^   ^   ^  ^
1   2   3   4   5   6  7

Parameters:: duration (timedelta64) – The amount to expand the period.
Return type:: None