42 string representation of pyaml objects

[JeanLucPons]

This PR add string representation of various items.
I didn't add some test as it is just print.

from pyaml.pyaml import pyaml,PyAML
from pyaml.configuration.factory import Factory
from pyaml.instrument import Instrument
from pyaml.arrays.bpm_array import BPMArray

ml:PyAML = pyaml("tests/config/EBSOrbit.yaml")
sr:Instrument = ml.get('sr')

print(sr.design)
print(sr.live)

m = sr.design.get_magnet("SH1A-C04-H")
print(m)
m = sr.live.get_magnet("SH1A-C05-H")
print(m)

print(sr.design.get_rf_plant("RF"))
print(sr.live.get_bpm("BPM_C03-08"))
print(sr.live.get_betatron_tune_monitor("BETATRON_TUNE"))
print(sr.live.get_betatron_tune_monitor("BETATRON_TUNE").tune.get())
print(sr.design.get_betatron_tune_monitor("BETATRON_TUNE").tune.get())

bpms = BPMArray("TestBPM",[sr.live.get_bpm("BPM_C03-08"),sr.live.get_bpm("BPM_C04-08")])
print(bpms)
 
Factory.clear()

outputs:

Simulator(name='design', lattice='sr/lattices/ebs.mat', mat_key=None, linker=None)
TangoControlSystem(name='live', tango_host='ebs-simu-3:10000', debug_level=None, lazy_devices=True, scalar_aggregator='tango.pyaml.multi_attribute', vector_aggregator=None, timeout_ms=3000)
HCorrector(peer='Simulator:design', name='SH1A-C04-H', model='SH1A-C04', magnet_model=LinearCFMagnetModel(multipoles=['B0', 'A0', 'A1', 'B2'], curves=[CSVCurve(file='sr/magnet_models/SHI_h_strength.csv'), CSVCurve(file='sr/magnet_models/SHI_v_strength.csv'), CSVCurve(file='sr/magnet_models/SHI_sq_strength.csv'), CSVCurve(file='sr/magnet_models/SHI_sext_strength.csv')], calibration_factors=None, calibration_offsets=None, pseudo_factors=[1.0, -1.0, -1.0, -1.0], pseudo_offsets=None, powerconverters=[Attribute(attribute='srmag/ps-corr-sh1/c04-a-ch1/current', unit='A'), Attribute(attribute='srmag/ps-corr-sh1/c04-a-ch2/current', unit='A'), Attribute(attribute='srmag/ps-corr-sh1/c04-a-ch3/current', unit='A'), Attribute(attribute='srmag/ps-corr-sh1/c04-a-ch5/current', unit='A'), Attribute(attribute='srmag/ps-corr-sh1/c04-a-ch6/current', unit='A')], matrix=CSVMatrix(file='sr/magnet_models/SHI_matrix.csv'), units=['rad', 'rad', 'm-1', 'm-2']))
HCorrector(peer='TangoControlSystem:live', name='SH1A-C05-H', model='SH1A-C05', magnet_model=LinearCFMagnetModel(multipoles=['B0', 'A0', 'A1'], curves=[CSVCurve(file='sr/magnet_models/SH1_SH3_h_strength.csv'), CSVCurve(file='sr/magnet_models/SH1_SH3_v_strength.csv'), CSVCurve(file='sr/magnet_models/SH1_SH3_sq_strength.csv')], calibration_factors=None, calibration_offsets=None, pseudo_factors=[1.0, -1.0, -1.0], pseudo_offsets=None, powerconverters=[Attribute(attribute='srmag/ps-corr-sh1/c05-a-ch1/current', unit='A'), Attribute(attribute='srmag/ps-corr-sh1/c05-a-ch2/current', unit='A'), Attribute(attribute='srmag/ps-corr-sh1/c05-a-ch3/current', unit='A')], matrix=CSVMatrix(file='sr/magnet_models/SH_matrix.csv'), units=['rad', 'rad', 'm-1']))
RFPlant(peer='Simulator:design', name='RF', masterclock=Attribute(attribute='sy/ms/1/Frequency', unit='Hz'), transmitters=[RFTransmitter(peer='None', name='RFTRA', voltage=Attribute(attribute='sys/ringsimulator/ebs/RfVoltage', unit='V'), phase=None, cavities=['CAV_C05_01', 'CAV_C05_02', 'CAV_C05_03', 'CAV_C05_04', 'CAV_C05_05', 'CAV_C07_01', 'CAV_C07_02', 'CAV_C07_03', 'CAV_C07_04', 'CAV_C07_05', 'CAV_C25_01', 'CAV_C25_02', 'CAV_C25_03'], harmonic=1.0, distribution=1.0)])
BPM(peer='TangoControlSystem:live', name='BPM_C03-08', model=BPMSimpleModel(x_pos=AttributeReadOnly(attribute='srdiag/bpm/c03-08/SA_HPosition', unit='m'), y_pos=AttributeReadOnly(attribute='srdiag/bpm/c03-08/SA_VPosition', unit='m')))
BetatronTuneMonitor(peer='TangoControlSystem:live', name='BETATRON_TUNE', tune_h=AttributeReadOnly(attribute='sys/ringsimulator/ebs/Tune_h', unit=''), tune_v=AttributeReadOnly(attribute='sys/ringsimulator/ebs/Tune_v', unit=''))
[0.15759235 0.34006444]
[0.15999673 0.33999769]
[BPM(peer='TangoControlSystem:live', name='BPM_C03-08', model=BPMSimpleModel(x_pos=AttributeReadOnly(attribute='srdiag/bpm/c03-08/SA_HPosition', unit='m'), y_pos=AttributeReadOnly(attribute='srdiag/bpm/c03-08/SA_VPosition', unit='m'))), BPM(peer='TangoControlSystem:live', name='BPM_C04-08', model=BPMSimpleModel(x_pos=AttributeReadOnly(attribute='srdiag/bpm/c04-08/SA_HPosition', unit='m'), y_pos=AttributeReadOnly(attribute='srdiag/bpm/c04-08/SA_VPosition', unit='m')))]

[gubaidulinvadim]

Great! It's a bit of a shame that we need essentially the same repr in all elements. I also think we should add str that will do mostly the same. Sometimes in pyAT, there's only str and no repr or only repr and no str and it is a bit annoying.

[JeanLucPons]

Great! It's a bit of a shame that we need essentially the same repr in all elements. I also think we should add str that will do mostly the same. Sometimes in pyAT, there's only str and no repr or only repr and no str and it is a bit annoying.

I will try to factorize all the repr() that are identical. I will try to put it in Element and use getattr() to get the model.
Concerning str() I have an issue with it.
The problem is that when you print with both str() and repr() defined it uses str() but when printing elements of a list, they are printed using repr() which create a discrepancy.

[gubaidulinvadim]

It is fine with only repr for me.