otp.Source.__setitem__#
- Source.__setitem__(key, value)#
Add new column to the source or update existing one.
- Parameters
Examples
>>> data = otp.Tick(A='A') >>> data['D'] = otp.datetime(2022, 2, 2) >>> data['X'] = 1 >>> data['Y'] = data['X'] >>> data['X'] = 12345 >>> data['Z'] = data['Y'].astype(str) + 'abc' >>> otp.run(data) Time A D X Y Z 0 2003-12-01 A 2022-02-02 12345 1 1abc
See also
ADD_FIELD OneTick event processorUPDATE_FIELD OneTick event processor