Python Tutorial ( PDFDrive )

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Sending Attachments as an e-‐mail: To send an e-mail with mixed content requires to set Content-type header to multipart/mixed. Then, text andattachment sections can be specified within boundaries.A boundary is started with two hyphens followed by a unique number, which can not appear in the message partof the e-mail. A final boundary denoting the e-mail's final section must also end with two hyphens.Attached files should be encoded with the pack("m") function to have base64 encoding before transmission.EXAMPLE: Following is the example, which will send a file /tmp/test.txt as an attachment. Try it once:#!/usr/bin/pythonimport smtplibimport base64filename = "/tmp/test.txt"# Read a file and encode it into base64 formatfo = open(filename, "rb")filecontent = fo.read()encodedcontent = base64.b64encode(filecontent) # base64sender = 'webmaster@tutorialpoint.com'reciever = 'amrood.admin@gmail.com'marker = "AUNIQUEMARKER"body ="""This is a test email to send an attachement."""# Define the main headers.part1 = """From: From Person <me@fromdomain.net>To: To Person <amrood.admin@gmail.com>Subject: Sending AttachementMIME-Version: 1.0Content-Type: multipart/mixed; boundary=%s--%s""" % (marker, marker)# Define the message actionpart2 = """Content-Type: text/plainContent-Transfer-Encoding:8bit%s--%s""" % (body,marker)# Define the attachment sectionpart3 = """Content-Type: multipart/mixed; name=\"%s\"Content-Transfer-Encoding:base64Content-Disposition: attachment; filename=%s%s--%s--""" %(filename, filename, encodedcontent, marker)message = part1 + part2 + part3TUTORIALS POINT Simply Easy Learning
try:smtpObj = smtplib.SMTP('localhost')smtpObj.sendmail(sender, reciever, message)print "Successfully sent email"except Exception:print "Error: unable to send email"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
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Description The method popen() open
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# !/usr/bin/pythonimport ossrc = '/
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# stat informationstatinfo = os.sta
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Description The method tcgetpgrp()
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os.tempnam(dir, prefix)Parameters
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Description The method ttyname() re
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Return Value This method returns t
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Page 309 and 310: self.args = argSo once you defined
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Page 313 and 314: For the above class let's try to ac
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
Page 329 and 330: If you click hello.py, then this pr
Page 331 and 332: Simple URL Example : Get Metho
Page 333 and 334: </form>The result of this code is t
Page 335 and 336: text_content = form.getvalue('textc
Page 337 and 338: Here is an example of how to retrie
Page 339 and 340: CHAPTER21Python Database AccessThe
Page 341 and 342: EXAMPLE: Following is the example o
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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
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Page 357 and 358: count = 0while count < 5:time.sleep
Page 359 and 360: Synchronizing Threads: The threadi
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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
Page 385 and 386: Syntax: Here is the simple syntax t
Page 387 and 388: Menu The goal of this widget is to
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Page 391 and 392: Example: Try the following example
Page 393 and 394: WidthWraplengthWidth of the label i
Page 395 and 396: label appears in the top left corne
Page 397 and 398: Parameters: • master: This repres
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Page 403 and 404: 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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