Run Python Script on Web Server

Question

I have a web server and my cgi-bin is on 0755, and my script called return.py is also 0755. And when my script is just this

#!/usr/bin/perl

import cgi
import json


print "Content-type: text/plain\n\n";
print "testing...\n";

And I go to the web page I see testing... as I should, but when I add any of this to my script

form = cgi.FieldStorage()

param = form.getvalue("param")

if param:
    json.dumps({'success': True, 'message':  param })
else:
    json.dumps({'success': False, 'message':  'did not receive parameter' })

I get a 500 Internal Server Error, and Im not sure why, I have the correct permissions set, and the python is running because it works when I don't add the stuff above? Is there something wrong with my above code? What else could be causing this issue?

BY THE WAY the above code is because I am making a POST to this and what to return the value posted. Just a simple test case, but I can't get it to work?

Ive gone through this check list, of what I could check, and it all worked https://encodable.com/internal_server_error/

Thanks for the help in advance. :)

EDIT

here are error logs

[Tue Jun 23 01:35:38.661161 2015] [authz_core:error] [pid 874653] [client 173.34------:51484] AH01630: client denied by server configuration: /home/spencer/public_html/.htaccess
[Tue Jun 23 01:35:38.426745 2015] [access_compat:error] [pid 874653] [client 173.34-----:51484] AH01797: client denied by server configuration: /home/spencer/public_html/error_log

@Lafada not sure how to access or if I do have access to it? how can I find out? — james red
– james red, Commented Jun 23, 2015 at 7:03
Please add your logs in question, that will help to understand your problem. — NPatel
– NPatel, Commented Jun 23, 2015 at 7:13

pkm · Accepted Answer · 2015-06-23 07:37:28Z

1

Just change the shebang and it should work

#!/usr/bin/perl
import cgi
import json
print "Content-type: text/plain\n\n";
print "testing...\n";

and assuming u save it as test.py works then u add below part

#!/usr/bin/perl
import cgi
import json
print "Content-type: text/plain\n\n";
print "testing...\n";
form = cgi.FieldStorage()
param = form.getvalue("param")
if param:
    json.dumps({'success': True, 'message':  param })
else:
    json.dumps({'success': False, 'message':  'did not receive parameter' })

it gives server error

Then change the shebang to

#!/usr/bin/python

And it works .....put correct shebang and life is easy

answered Jun 23, 2015 at 7:37

pkm

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1 Comment

james red Over a year ago

Okay now it works, if I change it to #!/usr/bin/python but why? And I still need print "Content-type: text/plain\n\n"; line above the all, why does that need to be there?

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