[Tutor] Not sure how to use external command within python code (3.6)

[David L Neil]

On 8/12/19 8:41 AM, Alan Gauld via Tutor wrote:
> On 07/12/2019 16:16, Robert Alexander wrote:
> 
>> process = subprocess.Popen(['/usr/local/bin/speedtest', '-f json'],
> 
> Sorry I haven't looked at this closely but it might be better to pass
> the flag and value seperately:
> 
> process = subprocess.Popen(['/usr/local/bin/speedtest', '-f', 'json'],...
> 
> Just a thought,


Similar thinking: when the complex/advanced case doesn't work, simplify!

Recommend review of https://docs.python.org/3/library/subprocess.html 
(.run() eases life, in most cases) and use the Python REPL to experiment 
with the simplest access to Speedtest (and to 'see' what is happening at 
each step!), then to add the 'bells and whistles', eg formatted output, 
and only then, receiving same back into Python...

-- 
Regards =dn