Example 15-18. PP4E\Internet\Web\cgi-bin\languages.py
#!/usr/bin/python
"""
show hello world syntax for input language name; note that it uses r'...'
raw strings so that '\n' in the table are left intact, and cgi.escape()
on the string so that things like '<<' don't confuse browsers--they are
translated to valid HTML code; any language name can arrive at this script,
since explicit URLs "http://servername/cgi-bin/languages.py?language=Cobol"
can be typed in a web browser or sent by a script (urllib.request.urlopen).
caveats: the languages list appears in both the CGI and HTML files--could
import from single file if selection list generated by a CGI script too;
"""
debugme = False # True=test from cmd line
inputkey = 'language' # input parameter name
hellos = {
'Python': r" print('Hello World') ",
'Python2': r" print 'Hello World' ",
'Perl': r' print "Hello World\n"; ',
'Tcl': r' puts "Hello World" ',
'Scheme': r' (display "Hello World") (newline) ',
'SmallTalk': r" 'Hello World' print. ",
'Java': r' System.out.println("Hello World"); ',
'C': r' printf("Hello World\n"); ',
'C++': r' cout << "Hello World" << endl; ',
'Basic': r' 10 PRINT "Hello World" ',
'Fortran': r" print *, 'Hello World' ",
'Pascal': r" WriteLn('Hello World'); "
}
Figure 15-21. The “Hello World” main page
The Hello World Selector | 1185