[Tutor] Pass arguments from bash script to embedded python script

[David L Neil]

On 26/10/19 12:24 AM, Stephen P. Molnar wrote:
> Thanks to the help from this list, I have achieved success. Here is my 
> code:
> 
>> #!/usr/bin/env python3
>> # -*- coding: utf-8 -*-
>> """
>> Created on Fri Oct 11 09:36:30 2019
>>
>> """
>>
>> import os
>> import glob
>> import numpy as np
>>
>> fileList = []
>>
>>
>> for files in glob.glob("*.log"):
>>     fileName, fileExtension = os.path.splitext(files)
>>     fileList.append(fileName)
>>
>> for filename in fileList:
>>     data = np.genfromtxt(filename+'.log', usecols=(1), skip_header=27, 
>> skip_footer=1, encoding=None)
>>     np.savetxt(filename+'-dG', data, fmt='%.15g', header=filename)
> 
> Many, many thanks.


As @Mats has said: it's working so why mess with it!

For learning interest:

Examine the two loops. What are their purposes?

Consider these two lines:

 >>     fileList.append(fileName)
 >>
 >> for filename in fileList:

We start with fileName and list it. Then we take the list and process 
each element. Could the two loops be compressed into one?

Answer: split the fileName and pass the result directly into the np 
operations.

NB I can understand why one might prefer the two-step approach, if 
that's the way your mind breaks-down the problem, ie shorter code is not 
necessarily 'better' code!



Thanks for the personal note. Previous attempts to respond were blocked 
by SBC's email filter. I do have a (non-Python) question I'd like to 
pose but would be grossly OT 'here'...
-- 
Regards =dn