passing data from .py to .sh

[solo2500]

I know very little about programing so please bare with me!


I'm trying to pass some data from a python program to a shell script. I understand one option is to "call" the shell script from within the python program. I have tried the following but I'm getting an error.

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#Python 2.7.9 (default, Mar  8 2015, 00:52:26) 
#[GCC 4.9.2] on linux2
#Type "copyright", "credits" or "license()" for more information.

#!/bin/python
#program to read temp.txt file and deliver...
f = open('/var/www/axx/temp.txt')
line1 =f.readline()
line2=f.readline()

f.close()

print 'line1',line1
print 'line2',line2

call(['bash', 'overlayv2.sh', line1, line2])

The result includes this error:

line1 11/15/2016 05:15:00 PM

line2 50.0F

Traceback (most recent call last):
File "/home/pi/axx/datatransv1.0.py", line 32, in <module>
call(['bash', 'overlayv2.sh', line1, line2, line3])
NameError: name 'call' is not defined
>>>

Can someone explan what I'm doing wrong?
Also, If there is a better (easrer) way I'm all ears!

THANKS FOR ANY HELP!!!

[SkyRise]

You want to use subprocess.run, like

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subprocess.run(["ls", "-l"])

And see the docs at
https://docs.python.org/3/library/subprocess.html

[solo2500]

I get the same error when I try this:

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subprocess.run(['overlayv2.sh', line1, line2, line3])

Or this:

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subprocess.run(['bash','overlayv2.sh', line1, line2, line3])

???

[SkyRise]

Sorry, hadn't noticed that you're using python 2.7

It did used to be 'call':

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subprocess.call(["ls", "-l"])

See python 2 docs here
https://docs.python.org/2/library/subprocess.html

[solo2500]

Thanks... back to original question... what am I doing wrong?

[SkyRise]

You're using

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call(['bash', 'overlayv2.sh', line1, line2])

instead of

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subprocess.call(['bash', 'overlayv2.sh', line1, line2])

The 'call' function is part of the 'subprocess' package. Which does raise another point, you'll need to import the 'subprocess' package in order to use its functions (at the top of your code)

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import subprocess

[solo2500]

Ok... making progress...
adding

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import subprocess

eliminated the error... and the shell script runs but it doesn't seem to pass the contents of line1, line2 etc?

Any ideas...?

[solo2500]

anybody? anything?