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Passing Information using POST method: A generally more reliable method of passing information to a CGI program is the POST method. This packagesthe information in exactly the same way as GET methods, but instead of sending it as a text string after a ? in theURL it sends it as a separate message. This message comes into the CGI script in the form of the standard input.Below is same hello_get.py script, which handles GET as well as POST method.#!/usr/bin/python# Import modules for CGI handlingimport cgi, cgitb# Create instance of FieldStorageform = cgi.FieldStorage()# Get data from fieldsfirst_name = form.getvalue('first_name')last_name = form.getvalue('last_name')print "Content-type:text/html\r\n\r\n"print "<html>"print "<head>"print "<title>Hello - Second CGI Program</title>"print "</head>"print "<body>"print "<h2>Hello %s %s</h2>" % (first_name, last_name)print "</body>"print "</html>"Let us take again same example as above which passes two values using HTML FORM and submit button. Weare going to use same CGI script hello_get.py to handle this input.<form action="/cgi-bin/hello_get.py" method="post">First Name: <input type="text" name="first_name"> Last Name: <input type="text" name="last_name" /><input type="submit" value="Submit" /></form>Here is the actual output of the above form. You enter First and Last Name and then click submit button to see theresult.First Name:Last Name:SubmitPassing Checkbox Data to CGI Program Checkboxes are used when more than one option is required to be selected.Here is example HTML code for a form with two checkboxes:<form action="/cgi-bin/checkbox.cgi" method="POST" target="_blank"><input type="checkbox" name="maths" value="on" /> Maths<input type="checkbox" name="physics" value="on" /> Physics<input type="submit" value="Select Subject" />TUTORIALS POINT Simply Easy Learning
</form>The result of this code is the following form:MathsPhysicsSelect SubjectBelow is checkbox.cgi script to handle input given by web browser for checkbox button.#!/usr/bin/python# Import modules for CGI handlingimport cgi, cgitb# Create instance of FieldStorageform = cgi.FieldStorage()# Get data from fieldsif form.getvalue('maths'):math_flag = "ON"else:math_flag = "OFF"if form.getvalue('physics'):physics_flag = "ON"else:physics_flag = "OFF"print "Content-type:text/html\r\n\r\n"print "<html>"print "<head>"print "<title>Checkbox - Third CGI Program</title>"print "</head>"print "<body>"print "<h2> CheckBox Maths is : %s</h2>" % math_flagprint "<h2> CheckBox Physics is : %s</h2>" % physics_flagprint "</body>"print "</html>"Passing Radio Button Data to CGI Program Radio Buttons are used when only one option is required to be selected.Here is example HTML code for a form with two radio buttons:<form action="/cgi-bin/radiobutton.py" method="post" target="_blank"><input type="radio" name="subject" value="maths" /> Maths<input type="radio" name="subject" value="physics" /> Physics<input type="submit" value="Select Subject" /></form>The result of this code is the following form:Select SubjectMaths PhysicsBelow is radiobutton.py script to handle input given by web browser for radio button:TUTORIALS POINT Simply Easy Learning
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Python Tutorial
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ABOUT THE TUTORIALPython TutorialPy
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Description .......................
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Syntax ............................
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Return Value ......................
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Parameters ........................
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Parameters ........................
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Locating Modules: .................
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Description .......................
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Return Value ......................
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Example ...........................
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Parameters ........................
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Regular-expression Modifiers - Opti
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Starting a New Thread: ............
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Example: ..........................
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CHAPTER1Python OverviewPython is a
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CHAPTER2Python EnvironmentBefore we
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• To use this installer python-XY
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-c cmd run Python script sent in as
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This will produce the following res
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file_name = raw_input("Enter filena
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$ python -husage: python [option] .
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print 'Input file is "', inputfilep
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Here, an integer object is created
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Python Lists: Lists are the most v
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FunctionDescriptionint(x [,base])Co
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CHAPTER5Python Basic OperatorsWhat
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Line 4 - Value of c is 2Line 5 - Va
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Line 5 - a is greater than bLine 6
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| Binary OR Operator copies a bit i
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else:print "Line 3 - a and b are tr
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if ( id(a) == id(b) ):print "Line 2
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When you execute the above program,
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if statementsif...else statementsne
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Example: #!/usr/bin/pythonvar1 = 10
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else:print "Could not find true exp
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Loop Typewhile loopfor loopDescript
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num = raw_input("Enter a number :")
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Good bye!Iterating by Sequence I
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11 is prime13 is prime17 is prime19
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continue statement The continue st
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CHAPTER8Python NumbersNumber data t
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max(x1, x2,...)min(x1, x2,...)modf(
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Syntax Following is the syntax for
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import math# This will import math
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import mathmath.log10( x )Note: Thi
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modf(x) Description The method modf
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round( x [, n] )Parameters • x --
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Return Value This method returns a
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seed([x]) Description The method se
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asin(x)Note: This function is not a
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print "atan2(-10,10) : ", math.atan
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Note: This function is not accessib
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import mathprint "degrees(3) : ", m
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CHAPTER9Python StringsStrings are a
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+ Concatenation - Adds values on ei
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TAB ( \t ) and they will show up th
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str = "this is string example....wo
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Return Value This method returns a
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Description The method expandtabs()
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Traceback (most recent call last):F
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Let us compile and run the above pr
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str = "This is string example....wo
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str = "-";seq = ("a", "b", "c"); #
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lstrip() Description The method lst
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Max character: xmin(str) Descriptio
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str = "this is really a string exam
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Parameters • chars -- You can sup
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Parameters• str -- This is the st
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Parameters • NAReturn Value This
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Example The following example shows
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CHAPTER10Python ListsThe most basic
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Python Expression Results Descripti
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list( seq )Parameters • seq -- Th
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Return Value If elements are of th
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list.insert(index, obj)Parameters
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CHAPTER11Python TuplesAtuple is a s
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len((1, 2, 3)) 3 Length(1, 2, 3) +
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-11-1len(tuple) Description The met
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min value element : 200tuple(seq) D
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#!/usr/bin/pythondict = {'Name': 'Z
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34str(dict)Produces a printable str
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type(variable) Description The meth
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Return Value This method does not
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CHAPTER13Python Date & TimeApython
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#!/usr/bin/pythonimport time;localt
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import timeprint "time.altzone %d "
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Parameters • sec -- These are the
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• %w - day of the week as a decim
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time.time( ) Description The metho
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2time.tznameAttribute time.tzname i
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CHAPTER14Python FunctionAfunction i
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#!/usr/bin/python# Function definit
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return;# Now you can call printinfo
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Inside the function : 30Outside the
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A module is loaded only once, regar
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'sqrt', 'tan', 'tanh']Here, the spe
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CHAPTER16Python Files I/OThis chapt
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rb+WWbw+wb+AAba+ab+Opens a file for
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fo.write( "Python is a great langua
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EXAMPLE: Following is the example t
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operations from the operating syste
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# Close opened filefo.close()Let us
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Parameters • NAReturn Value This
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Parameters • offset -- This is th
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Parameters • size -- If this opti
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Description The method writelines()
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53545556575859606162os.symlink(src,
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• stat.S_IRGRP: Read by group.•
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os.chroot("/tmp/usr")print "Changed
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Parameters • fd -- This is the or
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import os, sys# First go to the "/v
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Description The method fchown() cha
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Description The method fdopen() ret
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{'PC_MAX_INPUT': 2, 'PC_VDISABLE':
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# Open a filefd = os.open( "foo.txt
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print "Current working dir : %s" %
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path = "/var/www/html/foo.txt"fd =
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_vti_txtrobots.txtitemlistingresume
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# Close opened fileos.close( fd )#
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dev_num = os.makedev(major_dnum, mi
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-rw-------. 1 root root 0 Apr 30 02
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Page 283 and 284: Description The method popen() open
Page 285 and 286: # !/usr/bin/pythonimport ossrc = '/
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Page 293 and 294: Description The method tcgetpgrp()
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Page 327 and 328: CHAPTER20Python CGI ProgrammingWhat
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Page 345 and 346: DELETE Operation: DELETE operation
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Page 355 and 356: try:smtpObj = smtplib.SMTP('localho
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Page 369 and 370: Tkinter Widgets Tkinter provides v
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selectmodeDetermines how many items
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Syntax: Here is the simple syntax t
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Menu The goal of this widget is to
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filemenu.add_command(label="Exit",
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Example: Try the following example
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WidthWraplengthWidth of the label i
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label appears in the top left corne
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Parameters: • master: This repres
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Parameters: • master: This repres
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mark_gravity(mark [,gravity])Return
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Methods & Descriptiondeiconify()Dis
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disabledbackgrounddisabledforegroun
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bgbdThe color of the slider and arr
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fontheightlabelAnchorhighlightbackg
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Standard attributes:Let's take a l
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• family: The font family name as
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B2.pack()B3.pack()B4.pack()B5.pack(
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• "heart"• "heart"• "man"•
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The grid() Method This geometry m
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CHAPTERPython Further Extensions27A
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This table needs to be terminated w
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Passing Function Parameters: Beca
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return (a + b)You can return two va
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CHAPTER28Python Tools/UtilitiesThe
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The profile Module: The profile m
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