Page History
| Proposal | Arguments In Favor | Argument Against | |
|---|---|---|---|
| Data shall be accessible with a syntax like evt.xppcspad.attr1.attr2 | allows for easy tab-completion exploration of the contents of an event | ||
| All attributes must exist on every event, with the lowest-level attribute returning None if the data is not accessible for any reason (e.g. missing detector, missing raw data, missing calibration constants) | makes user code simpler to check for missing information | computationally expensive to add all attributes when data is not present | |
| No functions allowed. Configurable parameters (e.g. common-mode params) will be set with other attributes | ease-of-use in AMI | artificial constraint on use of python | |
| All attributes should be discoverable on the Configure transition | ease-of-use in AMI | ||
| Attributes will be automatically attached to each event by psana use the software/version information in the Configure transition | ease-of-use | ||
| An (small) additional interface layer will exist: det = Detector('xppcspad'), where det(evt) will return evt.xppcspad | enables definition of detector names outside event loops | ||
| lowest level dict or list |
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