Python Programming Tutorials

Python Programming Tutorials And Articles
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A few years ago, people who wished to study programming as a hobby had an important decision to make: Which programming language would they study for their first? Many people chose to start with BASIC or Pascal, because they were easier. Indeed, those languages are fairly well-suited to...
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Run length Encoding also known as RLE is probably the most basic encoding method that's being used in different fields of computing like, Multimedia Formats etc. In this tutorial we'll be looking at how RLE works and a basic python example which implements RLE. How does it works Run length...
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In this tutorial we'll be making a small yet effective application rather code snippet to Lookup Any Username on Facebook. The Code Below Uses the Graph API, The Graph API (as defined by Facebook) is the core of Facebook Platform , It allows reading and Writing access to Facebook. It provides a...
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My cousin recently bought a Bomb Trap puzzle, he was crazy for solving that puzzle and tried a couple of times and often came to me for rechecking his solution, and me being lazy, I thought of making a simple python script to check his solutions and save me from the brain drain. The Code ...
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Link Extractor as the name suggests, scrapes all the URLs from a particular webpage. In the following code the extractor can extract relative as well as absolute URL's from a HTML webpage, and outputs them is a more readable and useful format. The Code from BeautifulSoup import...
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Post Office Protocal version 3 (POP3) is protocol of the TCP/IP stack's application layer, used to fetch email from remote mail servers. POP is one of the most used protocols for email retrieval, other one being IMAP. Virtually every email application, be it in the desktop or mobile supports the...
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Well, I was trying to use regular expressions in Python. I wrote a small script, so I thought I'll will post it and make it open for discussion. As I learn more I'll keep them posted too, and if anyone has any comments please do let me know. #!/usr/bin/python import re print...
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Introduction There are two basic methods for sending an email with Python. If a mail server is running on the machine where Python is installed, simply open a pipe to the mail server and write the email as a file to that pipe. This is usually done on *nix type systems such as Linux. ...
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Strings and Lists are 2 important data types in the suite of structured data types in python. Strings and lists are similar, but they are not same and many people donít know the main difference between a string and a list in python. One simple difference between strings and lists is that lists can...
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Signals are a limited form of inter-process communication, it analogous to hardware interrupts. It is generally used by the operating system to notify processes about certain issues/states/errors, like division by zero, etc. In case, you want to know read more about signals read Signal and...
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Image manipulation is an interesting subject, as well almost inevitable in today's websites, you can use it to render CAPTCHA, crop & resize images, convert between image formats and many more advanced functions. Python with it's growing popularity has encouraged the community & enterprises to...
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Earlier today, I had posted a code snippet to print all the CGI environment variables in CGI-Perl. Well, I recently started learning Python too, so thought of doing the same in Python. Checkout the code below. #!/usr/bin/python import sys, os print "Content-Type: text/html\n\n"; ...
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HMAC stands for Hash-base Message Authentication Code, it is key based message digest algorithm which can be used for verifying the integrity of the message (i.e. the original message from which the hash is generated) or to verify the authenticity of the sender of the message or both. Nowadays,...
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Python urllib2 library contains functions with enables programmers to access remote URLs by helping out in the operations like HTTP Basic Authentication, cookies, redirects etc. It's Python's equivalent to Perl's LWP or ASP's XMLHttpRequest etc. The library allows you to add HTTP headers to...
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CGI or Common Gateway Interface allow servers, primarily HTTP servers, to interface with external programs like Python, Perl, Ruby scripts or even binary programs written in C/C++. The most popular & most used web server - Apache - can easily be configured for CGI scripts. Let's look at...
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Internet Message Access Protocol better known as IMAP is one of the most popular & widely used protocols for accessing emails from remote servers, the other one being POP (Post Office Protocol), and almost all modern email clients support both these protocols. IMAP works on TCP/IP stack, and...
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JSON has now become a extensively used data format, primarily used to exchange data between different systems, you may say that it is a successor of the XML format in this regard. From small to very large web applications use JSON, some still provide XML format as an option while others don't, a...
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Secure hashes, message digests, or simply digest as they are popularly known are specific algorithms which take data of any type and any size and return a fixed bit length data that'll always be the same for the arbitrary data provided, in case the data is modified the hash will change vastly. ...
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Amazon Simple Storage Service (S3) is a low-cost & high-availability storage service provided by Amazon Web Services. It's really popular, more so due to the recent switching of IT infrastructures to cloud-based solutions. You can know more about Amazon S3, it's pricing structure etc. at...
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Command line arguments are quite old, in the days of DOS they were generally just options enabling/disabling mechanism and were known as switches. But, after the growth of *nix systems command line arguments have been developed and have provided a lot of features to power users. Here's an...
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