Model335 Python method error, send command through serial

compatibility with many of our existing instruments has been added to the Lake Shore Python driver.
pypi.org/project/lakeshore/

Instruments with a USB or Ethernet port should be supported by this update. Instruments with a DB-9 serial port are not supported by this driver, but could still be manually communicated with as before.

Here is an example script using the new driver. It reads temperature from a 240 Series module and sends it to a teslameter to use for temperature compensation. The original code from before the 240 was officially supported was much longer than this.

from time import sleep
from lakeshore import Teslameter
from lakeshore import Model240

STEP = 2 # query interval in seconds
CHANNEL = 1 # 240 Channel to use for temperature compensation

my_teslameter = Teslameter()
my_240 = Model240()

try:
while(True):
temperature = float(my_240.query('CRDG? %i' % CHANNEL))
print('Temperature: %f C ' % temperature, end='')
my_teslameter.configure_temperature_compensation(temperature_source='MTEM',manual_temperature=temperature)
print('Field: %f T \r' % my_teslameter.get_dc_field(), end='')
sleep(STEP)

except KeyboardInterrupt:
print("\ndone")

finally:
my_240.disconnect_usb()
my_teslameter.disconnect_usb()