I have some code which utilizes the PyVISA package to control a detector through USB. The code runs perfectly fine, but PyVISA dumps a bunch of debug information in the console which is making it difficult for me to print to the console to debug myself. Code and console printout below.
My code:
def pmt_onoff_test(gain_level = 0, offset_voltage = -0.009, lpfreq = 80000000):
gain_voltage = PMT1_gain_levels['voltage'].iloc[int(gain_level)
rm = pyvisa.ResourceManager()
pmt1 = rm.open_resource(pmt1_address)
pmt1.write("INST:SEL GAIN")
pmt1.write("SOUR:VOLT %f" % gain_voltage)
pmt1.write("INST:SEL OFFSET")
pmt1.write("SOUR:VOLT %f" % offset_voltage)
pmt1.write("SENS:FILT:LPAS:FREQ %f" % lpfreq)
pmt1.write("SENS:FUNC:ON %s" % pmt2101_model)
time.sleep(5)
pmt1.write("SENS:FUNC:OFF %s" % pmt2101_model)
rm.close()
Console output:
C:\ProgramData\anaconda3\envs\multiphoton\Lib\site-packages\nidaqmx\task\_task.py:102: DaqResourceWarning: Task of name "_unnamedTask<2C>" was not explicitly closed before it was destructed. Resources on the task device may still be reserved.
warnings.warn(
C:\ProgramData\anaconda3\envs\multiphoton\Lib\site-packages\nidaqmx\task\_task.py:102: DaqResourceWarning: Task of name "_unnamedTask<2D>" was not explicitly closed before it was destructed. Resources on the task device may still be reserved.
warnings.warn(
C:\ProgramData\anaconda3\envs\multiphoton\Lib\site-packages\nidaqmx\task\_task.py:102: DaqResourceWarning: Task of name "_unnamedTask<2E>" was not explicitly closed before it was destructed. Resources on the task device may still be reserved.
warnings.warn(
DEBUG:pyvisa:No visa library specified, trying to find alternatives.
DEBUG:pyvisa:Environment variable PYVISA_LIBRARY is unset.
DEBUG:pyvisa:No user defined configuration
DEBUG:pyvisa:Automatically found library files: [None, 'C:\\Windows\\system32\\visa32.dll', 'C:\\Windows\\system32\\visa32.dll', 'C:\\Windows\\system32\\visa64.dll', 'C:\\Windows\\system32\\visa64.dll']
DEBUG:pyvisa:No user defined library files
DEBUG:pyvisa:The IVI implementation available
DEBUG:pyvisa:No user defined configuration
DEBUG:pyvisa:Automatically found library files: [None, 'C:\\Windows\\system32\\visa32.dll', 'C:\\Windows\\system32\\visa32.dll', 'C:\\Windows\\system32\\visa64.dll', 'C:\\Windows\\system32\\visa64.dll']
DEBUG:pyvisa:No user defined library files
DEBUG:pyvisa:Reusing ResourceManager with session 29
DEBUG:pyvisa:viParseRsrcEx(29, 'USB0::0x1313::0x2F00::00AH3403::0::INSTR', 'c_ushort(7)', 'c_ushort(0)', <ctypes.c_char_Array_256 object at 0x000001C6DBE57F50>, <ctypes.c_char_Array_256 object at 0x000001C6DBE542D0>, <ctypes.c_char_Array_256 object at 0x000001C6DBE55650>) -> 0
DEBUG:pyvisa:USB0::0x1313::0x2F00::00AH3403::0::INSTR - opening ...
DEBUG:pyvisa:viOpen(29, 'USB0::0x1313::0x2F00::00AH3403::0::INSTR', <AccessModes.no_lock: 0>, 0, '<ViObject object at 0x000001C6DBE57F50>') -> 0
DEBUG:pyvisa:USB0::0x1313::0x2F00::00AH3403::0::INSTR - is open with session 31
DEBUG:pyvisa:viWrite(31, b'INST:SEL GAIN\r\n', 15, 'c_ulong(15)') -> 0
DEBUG:pyvisa:viWrite(31, b'SOUR:VOLT 0.529000\r\n', 20, 'c_ulong(20)') -> 0
DEBUG:pyvisa:viWrite(31, b'INST:SEL OFFSET\r\n', 17, 'c_ulong(17)') -> 0
DEBUG:pyvisa:viWrite(31, b'SOUR:VOLT -0.009000\r\n', 21, 'c_ulong(21)') -> 0
DEBUG:pyvisa:viWrite(31, b'SENS:FILT:LPAS:FREQ 80000000.000000\r\n', 37, 'c_ulong(37)') -> 0
DEBUG:pyvisa:viWrite(31, b'SENS:FUNC:ON H10770PA-40\r\n', 26, 'c_ulong(26)') -> 0
DEBUG:pyvisa:viWrite(31, b'SENS:FUNC:OFF H10770PA-40\r\n', 27, 'c_ulong(27)') -> 0
DEBUG:pyvisa:Closing ResourceManager (session: 29)
DEBUG:pyvisa:USB0::0x1313::0x2F00::00AH3403::0::INSTR - closing
DEBUG:pyvisa:viDisableEvent(31, <EventType.all_enabled: 1073709055>, <EventMechanism.all: 65535>) -> 0
DEBUG:pyvisa:viDiscardEvents(31, <EventType.all_enabled: 1073709055>, <EventMechanism.all: 65535>) -> 1073676292
DEBUG:pyvisa:viClose(31,) -> 0
DEBUG:pyvisa:USB0::0x1313::0x2F00::00AH3403::0::INSTR - is closed
DEBUG:pyvisa:viClose(29,) -> 0
I tried searching the PyVISA API documentation for some option to turn off debug information but couldn't find anything. Does anyone have suggestions for suppressing this output in the console?
Problem makes standard module logging and you would have to search help in
logging
I see pyvisa messages only when I create logger with level DEBUG
Minimal working example
import pyvisa
import logging
logging.basicConfig(level=logging.DEBUG)
logging.debug('testing DEBUG') # I see this message
logging.info('testing INFO') # I see this message
rm = pyvisa.ResourceManager() # I see PyVISA messages
print(rm.list_resources()) # I see PyVISA message
I can deactivate all messages using logging.disable()
import pyvisa
import logging
logging.basicConfig(level=logging.DEBUG)
logging.debug('testing DEBUG') # I see this message
logging.info('testing INFO') # I see this message
logging.disable()
logging.debug('testing DEBUG') # I don't see this message
logging.info('testing INFO') # I don't see this message
rm = pyvisa.ResourceManager() # I don't see PyVISA messages
print(rm.list_resources()) # I don't see PyVISA message
I can also change configuration only for logger with name pyvisa
and if I use level INFO (or other) then it skips PyVISA messages,
but I still can display own messages
import pyvisa
import logging
logging.basicConfig(level=logging.DEBUG)
# get logger by its name
log = logging.getLogger('pyvisa')
log.level = logging.INFO
logging.debug('testing DEBUG') # I see this message
logging.info('testing INFO') # I see this message
rm = pyvisa.ResourceManager() # I don't see PyVISA messages
print(rm.list_resources()) # I don't see PyVISA message