otp.Source.count (jupyter)#

Source.count(**kwargs)[source]#

Returns the number of ticks in the query.

Adds an aggregation that calculate total ticks count, and executes a query. Result is a single value – number of ticks. Possible application is the jupyter when a developer wants to check data presences for example.

Parameters: kwargs – parameters that will be passed to Source.to_df()
Return type: int

Examples

>>> data = otp.Ticks(X=[1, 2, 3])
>>> data.count()
3

>>> data = otp.Empty()
>>> data.count()
0