Connect to an Agilent MSO7104A oscilloscope on IP address 192.168.1.104:

>>> import usbtmc
>>> instr =  usbtmc.Instrument(2391, 5973)
>>> print(instr.ask("*IDN?"))
'AGILENT TECHNOLOGIES,MSO7104A,MY********,06.16.0001'

Open a connection and set the timeout:

>>> import usbtmc
>>> instr =  usbtmc.Instrument(2391, 5973)
>>> instr.timeout = 60*1000
>>> print(instr.ask("*TST?"))
'0'