[Tutor] python cgi single double quotes

Wed Jul 20 06:16:54 EDT 2016

Ran both the method

#!/usr/bin/env python

import cgi
import psycopg2
import sys

print """Content-type:text/html\r\n\r\n"""
print """<html>
<head>
<title>Hello Word - First CGI Program</title>
</head>
<body>
<h2>Hello Word! This is my first CGI program</h2>
<p>{version}</p>
First name: <input type="text" name="fname"><br>
</body>
</html>""".format(version=sys.version)

and its output (below)

nitin at nitin-Ideapad-Z570:~$ curl http://passtms.in/vimal.cgi

<html>
<head>
<title>Hello Word - First CGI Program</title>
</head>
<body>
<h2>Hello Word! This is my first CGI program</h2>
<p>2.7.6 (default, Jun 22 2015, 17:58:13)
[GCC 4.8.2]</p>
First name: <input type="text" name="fname"><br>
</body>
</html>
nitin at nitin-Ideapad-Z570:~$

In the first instance also it the same :
--------------------------------------------------------------
#!/usr/bin/env python

import sys
import cgi
import psycopg2

print "Content-type:text/html\r\n\r\n"
print '<html>'
print '<head>'
print '<title>Hello Word - First CGI Program</title>'
print '</head>'
print '<body>'
print '<h2>Hello Word! This is my first CGI program</h2>'
print "<p>"+ sys.version + "</p>"
print 'First name: <input type="text" name="fname"><br>'
print '</body>'
print '</html>'

output (below):-

nitin at nitin-Ideapad-Z570:~$ curl http://passtms.in/vimal.py

<html>
<head>
<title>Hello Word - First CGI Program</title>
</head>
<body>
<h2>Hello Word! This is my first CGI program</h2>
<p>2.7.6 (default, Jun 22 2015, 17:58:13)
[GCC 4.8.2]</p>
First name: <input type="text" name="fname"><br>
</body>
</html>

On 20 July 2016 at 15:15, Peter Otten <__peter__ at web.de> wrote:
> nitin chandra wrote:
>
>> On inserting the line ...
>>
>> print "<p> + "sys.version + "</p>"
>>
>> required slight correction
>>
>> print "<p>" + sys.version + "</p>"
>>
>> and the following script and its output are below :-
>> ----------------------------------------
>> #!/usr/bin/env python
>>
>> import sys
>> import cgi
>> import psycopg2
>>
>> print "Content-type:text/html\r\n\r\n"
>> print '<html>'
>> print '<head>'
>> print '<title>Hello Word - First CGI Program</title>'
>> print '</head>'
>> print '<body>'
>> print '<h2>Hello Word! This is my first CGI program</h2>'
>> print "<p>"+ sys.version + "</p>"
>> print 'First name: <input type="text" name="fname"><br>'
>> print '</body>'
>> print '</html>'
>>
>> ---------------------------------------------------
>>
>> Hello Word! This is my first CGI program
>>
>> 2.7.6 (default, Jun 22 2015, 17:58:13) [GCC 4.8.2]
>>
>> First name:
>
> If you got that from your server like in the session below...
>
> $ cat first.py
> #!/usr/bin/env python
>
> import sys
> import cgi
> import psycopg2
>
> print "Content-type:text/html\r\n\r\n"
> print '<html>'
> print '<head>'
> print '<title>Hello Word - First CGI Program</title>'
> print '</head>'
> print '<body>'
> print '<h2>Hello Word! This is my first CGI program</h2>'
> print "<p>"+ sys.version + "</p>"
> print 'First name: <input type="text" name="fname"><br>'
> print '</body>'
> print '</html>'
> $ curl http://myhost/somewhere/first.py
>
> <html>
> <head>
> <title>Hello Word - First CGI Program</title>
> </head>
> <body>
> <h2>Hello Word! This is my first CGI program</h2>
> <p>2.7.6 (default, Jun 22 2015, 17:58:13)
> [GCC 4.8.2]</p>
> First name: <input type="text" name="fname"><br>
> </body>
> </html>
>
> ... the following should also work:
>
> $ cat second.py
> #!/usr/bin/env python
>
> import sys
> import cgi
> import psycopg2
>
> print """Content-type:text/html\r\n\r\n
> <html>
> <head>
> <title>Hello Word - First CGI Program</title>
> </head>
> <body>
> <h2>Hello Word! This is my first CGI program</h2>
> <p>{version}</p>
> First name: <input type="text" name="fname"><br>
> </body>
> </html>
> """.format(version=sys.version)
> $ curl http://myhost/somewhere/second.py
>
> <html>
> <head>
> <title>Hello Word - First CGI Program</title>
> </head>
> <body>
> <h2>Hello Word! This is my first CGI program</h2>
> <p>2.7.6 (default, Jun 22 2015, 17:58:13)
> [GCC 4.8.2]</p>
> First name: <input type="text" name="fname"><br>
> </body>
> </html>
>
> If it does you can start looking for the actual problem. I don't expect it
> to have anything to do with your choice of quoting characters, as long as
> you write legal Python 2.
>
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