radicl crashes when attempting to save data and probe data is empty

[arothenbuhler]

• radicl version: 0.3.2
• Firmware version (if applicable): 1.45
• Python version: 3.6
• Operating System: Windows

Description

When the probe communication fails or the received data is empty, radicl crashes when attempting to save the data to file. While the probe communication shouldn't fail, radicl should probably catch this case and recover more gracefully

What I Did

Take a measurement and writing it to a file

Press enter to use default:
(Default: ././2020-02-29--184726.csv.csv)
radicl.radicl INFO Saving Data to :
C:\Users\arothenbuhler\2020-02-29--184726.csv
Traceback (most recent call last):
File "C:\Users\arothenbuhler\AppData\Local\Programs\Python\Python36\Scripts\radicl-script.py", line 11, in
load_entry_point('radicl==0.3.2', 'console_scripts', 'radicl')()
File "C:\Users\arothenbuhler\AppData\Local\Programs\Python\Python36\lib\site-packages\radicl-0.3.2-py3.6.egg\radicl\cli.py", line 72, in main
cli.run()
File "C:\Users\arothenbuhler\AppData\Local\Programs\Python\Python36\lib\site-packages\radicl-0.3.2-py3.6.egg\radicl\radicl.py", line 106, in run
self.tasking()
File "C:\Users\arothenbuhler\AppData\Local\Programs\Python\Python36\lib\site-packages\radicl-0.3.2-py3.6.egg\radicl\radicl.py", line 123, in tasking
fn()
File "C:\Users\arothenbuhler\AppData\Local\Programs\Python\Python36\lib\site-packages\radicl-0.3.2-py3.6.egg\radicl\radicl.py", line 284, in task_daq
if not self.data.empty:
AttributeError: 'NoneType' object has no attribute 'empty'