CODEWITHSUNDEEP
pythonpython-2.7apachesubprocesscgi
wondim
wondim

Reputation: 727

Calling script works from terminal but not from python subprocess.call

Below is my code. It works when calling in terminal but does not work from a python 2.7 script.

/usr/bin/python3.5 /var/www/html/web_map/simplemap/resources/py/align_raster.py
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-01_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-02_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-03_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-04_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-05_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-06_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-07_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-08_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-09_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-10_2013.tif,
/mnt/13aa104a-192c-43e5-95af-68aba6ac57a9/temp/85a0b2f9-c3fb-4913-9d70-a0c49f3649ba/chlor_a-modis-aqua-11_2013.tif
_aligned.tif

This is the output in terminal.

Segmentation fault (core dumped)

That is a QGIS python standalone script. It always shows that error but the file processes whatever is required.

This is not working.

cmd = '/usr/bin/python3.5 /var/www/html/web_map/simplemap/resources/py/align_raster.py {} {}'.format(
    output_files_string, output_suffix
)
print(cmd)

result = call(cmd.split(), shell=False)

I also tried shell=True,

It coulld be caused by the code dump but is there a way to trick python that the file is fine?

Edit: the code dump is fixed with this solution.

Edit2: I think this issue is related with Apache CGI Python. As it fails when running from a browser only.

Upvotes: 0

Views: 320

Answers (1)

ajomc
ajomc

Reputation: 1

Use subprocess library

import subprocess

subprocess.Popen(cmd, shell=True)

You can even prevent outputs to your python console, by setting

import subprocess

subprocess.Popen(cmd,
                 shell=True,
                 stdout=subprocess.DEVNULL,
                 stderr=subprocess.STDOUT)

Upvotes: 0

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