Please don't look at these unless you are really struggling!
<html>
<head>
<title>Form sample</title>
</head>
<body>
<h1>Sequence analysis</h1>
<p>Enter your name and the sequence to be analyzed, then select the
sequence type and types of analysis to be performed.</p>
<h2>Enter your data...</h2>
<!-- For Birkbeck you will need to change the action='....' to
http://http://student.cryst.bbk.ac.uk/cgi-bin/cgiwrap/USERNAME/form.cgi
replacing USERNAME as appropriate
-->
<form
action='./form.cgi'
method='post'>
<p><b>Name:</b><br />
<input name='name' type='text' size='49' /></p>
<p><b>Sequence:</b><br />
<textarea name='sequence' cols='40' rows='10'></textarea></p>
<p><b>Sequence type:</b>
<input name='seqtype' value='protein' type='radio' checked='checked' />Protein
<input name='seqtype' value='dna' type='radio' />DNA
</p>
<p><b>Analysis types:</b><br />
<input name='antype' type='checkbox' value='hydrophobicity' />Hydrophobicity<br />
<input name='antype' type='checkbox' value='accessibility' />Accessibility<br />
<input name='antype' type='checkbox' value='secstruc' />Secondary Structure<br />
</p>
<p>
<input type='submit' value='Submit' />
<input type='reset' value='Clear form' />
</p>
</form>
</body>
</html>
#!/usr/bin/env python3
import cgi;
# Useful debugging output
import cgitb
cgitb.enable() # Send errors to browser
# cgitb.enable(display=0, logdir="/path/to/logdir") # log errors to a file
# Print the HTML MIME-TYPE header
print ("Content-Type: text/html\n")
# Now grab the content of the form
form = cgi.FieldStorage()
name = form["name"].value
seq = form["sequence"].value
seqtype = form.getvalue("seqtype") # Alternative way of doing the same thing
antype = form.getlist("antype")
html = "<html>\n"
html += "<head>\n"
html += "<title>Sequence analysis results</title>\n"
html += "</head>\n\n"
html += "<body>\n"
html += "<h1>Sequence analysis results</h1>\n"
html += "<p>Data were submitted by: <b>" + name + "</b></p>\n"
html += "<h2>Your sequence was:</h2>\n"
html += "<pre>\n"
html += seq
html += "</pre>\n"
html += "<p>This is a <b>" + seqtype + "</b> sequence.</p>\n"
html += "<h2>Analysis</h2>\n"
html += "<p>The following forms of analysis are to be performed:</p>\n"
html += "<ul>"
for a in antype:
if a == "hydrophobicity":
html += "<li>Hydrophobicity profile</li>\n"
if a == "accessibility":
html += "<li>Accessibility prediction</li>\n"
if a == "secstruc":
html += "<li>Secondary structure prediction</li>\n"
html += "</ul>\n"
html += "</body>\n"
html += "</html>\n"
print (html)