This is a package that implements a logging class and defines an interface for instruments that can be logged by the class.

instrument_logger

Getting Started

%python3 -m pip install git+https://github.com/natecostello/instrument_logger
%python3
>>> from instrument_logger import InstrumentLogger
>>> il = InstrumentLogger()

Working idea / rough spec:

InstrumentLogger:

• a class for logging data from instruments to a file in a csv or simlar format that we can use panda's to analyze.
• it can recieve a name that is prepended to the file it writes to, which is always named by the time/date of it when it starts logging
• it can log continuously, at a requested frequency
• it can be stopped logging continuously
• it can log on demand if not logging continuously
• it logs all data from all instruments assigned to it
• each log entry is time/date stamped
• it can be queried for its last log entry data, in which case it will return a dict of all parameter measurements keyed by parameter name including the timestamp for the log entry.
• it can be queried for its last log entry data, in which case it will return a dict of all parameter measurements keyed by '[instrument name].[parameter name].[parameter unit]' including the timestamp for the log entry.

Instrument:

• a thing that measures things and can be asked to provide data. This will be an abstract interface that is implemented by things. The interface is what logger uses.
• for each parameter it measures, it has a string name and a string unit
• it can be queried for an individual parameter measurement by that parameters's name
• it can be queried for all of its parameters at once, in which case it returns a dict of measurements key'd by '[instrument name].[parameter name].[parameter unit]'.
• when queried for a parameter it should not block, meaning it must buffer its latest value.