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#!/usr/bin/python# Import modules for CGI handlingimport cgi, cgitb# Create instance of FieldStorageform = cgi.FieldStorage()# Get data from fieldsif form.getvalue('subject'):subject = form.getvalue('subject')else:subject = "Not set"print "Content-type:text/html\r\n\r\n"print "<html>"print "<head>"print "<title>Radio - Fourth CGI Program</title>"print "</head>"print "<body>"print "<h2> Selected Subject is %s</h2>" % subjectprint "</body>"print "</html>"Passing Text Area Data to CGI Program TEXTAREA element is used when multiline text has to be passed to the CGI Program.Here is example HTML code for a form with a TEXTAREA box:<form action="/cgi-bin/textarea.py" method="post" target="_blank"><textarea name="textcontent" cols="40" rows="4">Type your text here...</textarea><input type="submit" value="Submit" /></form>The result of this code is the following form:SubmitBelow is textarea.cgi script to handle input given by web browser:#!/usr/bin/python# Import modules for CGI handlingimport cgi, cgitb# Create instance of FieldStorageform = cgi.FieldStorage()# Get data from fieldsif form.getvalue('textcontent'):TUTORIALS POINT Simply Easy Learning
text_content = form.getvalue('textcontent')else:text_content = "Not entered"print "Content-type:text/html\r\n\r\n"print "<html>"print "<head>";print "<title>Text Area - Fifth CGI Program</title>"print "</head>"print "<body>"print "<h2> Entered Text Content is %s</h2>" % text_contentprint "</body>"Passing Drop Down Box Data to CGI Program Drop Down Box is used when we have many options available but only one or two will be selected.Here is example HTML code for a form with one drop down box:<form action="/cgi-bin/dropdown.py" method="post" target="_blank"><select name="dropdown"><option value="Maths" selected>Maths</option><option value="Physics">Physics</option></select><input type="submit" value="Submit"/></form>The result of this code is the following form:MathsSubmitBelow is dropdown.py script to handle input given by web browser:#!/usr/bin/python# Import modules for CGI handlingimport cgi, cgitb# Create instance of FieldStorageform = cgi.FieldStorage()# Get data from fieldsif form.getvalue('dropdown'):subject = form.getvalue('dropdown')else:subject = "Not entered"print "Content-type:text/html\r\n\r\n"print "<html>"print "<head>"print "<title>Dropdown Box - Sixth CGI Program</title>"print "</head>"print "<body>"print "<h2> Selected Subject is %s</h2>" % subjectprint "</body>"print "</html>"TUTORIALS POINT Simply Easy Learning
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Python Tutorial
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ABOUT THE TUTORIALPython TutorialPy
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Example: ..........................
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Return Value ......................
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Description .......................
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Syntax ............................
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Example ...........................
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Parameters ........................
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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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Parameters ........................
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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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os.pathconf(path, name) Descriptio
Page 283 and 284: Description The method popen() open
Page 285 and 286: # !/usr/bin/pythonimport ossrc = '/
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Page 291 and 292: # stat informationstatinfo = os.sta
Page 293 and 294: Description The method tcgetpgrp()
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Page 297 and 298: Description The method ttyname() re
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Page 307 and 308: print "Error: can\'t find file or r
Page 309 and 310: self.args = argSo once you defined
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Page 315 and 316: print 'Calling child method'c = Chi
Page 317 and 318: Data Hiding: An object's attribute
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Page 321 and 322: SYNTAX: re.sub(pattern, repl, strin
Page 323 and 324: \s Matches whitespace. Equivalent t
Page 325 and 326: Backreferences: This matches a prev
Page 327 and 328: CHAPTER20Python CGI ProgrammingWhat
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Page 345 and 346: DELETE Operation: DELETE operation
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Page 349 and 350: The socket Module: To create a so
Page 351 and 352: Protocol Common function Port No Py
Page 353 and 354: Subject: SMTP e-mail testThis is a
Page 355 and 356: try:smtpObj = smtplib.SMTP('localho
Page 357 and 358: count = 0while count < 5:time.sleep
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Page 361 and 362: thread = myThread(threadID, tName,
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Page 365 and 366: print "Rating:", self.ratingelif se
Page 367 and 368: Format: DVDRating: PGDescription: T
Page 369 and 370: Tkinter Widgets Tkinter provides v
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Page 373 and 374: WidthXscrollincrementXscrollcommand
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Page 377 and 378: The Entry widget is used to accept
Page 379 and 380: E1 = Entry(top, bd =5)E1.pack(side
Page 381 and 382: Optionanchorbgbitmapbdcursorfontfgh
Page 383 and 384: 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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