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Python

From: Foundations of Programming: Fundamentals

Video: Python

Next let's talk a little bit about Python. This is a language that's often mentioned in the same breath as Ruby as it's a very clean and concise object oriented language. We're beginning to see a pattern here it's another language that comes with a really large library. In fact, that's one of the benefits of this language. There is a whole bunch of prewritten functionality we can just type into. Again, like Ruby it is an interpreted language. It's garbage collected. We don't have to worry about compilers. We don't have to worry about memory management.

Python

Next let's talk a little bit about Python. This is a language that's often mentioned in the same breath as Ruby as it's a very clean and concise object oriented language. We're beginning to see a pattern here it's another language that comes with a really large library. In fact, that's one of the benefits of this language. There is a whole bunch of prewritten functionality we can just type into. Again, like Ruby it is an interpreted language. It's garbage collected. We don't have to worry about compilers. We don't have to worry about memory management.

And although, it's really powerful it's a very easy language to get started with. So what it is used for? Well, one of the great things about Python is totally cross-platform. There are Python interpreters on every platform that are well supported. It's a very easy language to build web applications with and ties in particular well with the Apache web server, but you'll also see it being used a lot as an embedded scripting language inside other applications. And it's used a great deal for building applications and web apps by companies like Google and Yahoo! So we want to know what does it look like.

Well, again it's one of these programs where we could have an entire valid program in one statement like with Ruby. We don't need a section called main. We don't need the semicolons. This is perfectly acceptable. But it doesn't teach us a lot. So let me add a few more lines. I can see that like Ruby we use the pound sign and hash mark as a comment and we use def for a define for describing a function, but here's an interesting thing. I'm defining a function here called sayhello that takes one parameter of name.

The question is where does it end? Well, Python is interesting, because it is one of the languages that does pay attention to indentation. We don't use the curly brace to mark the end of a function; we just indent the lines that are inside the function. So in this case, it's just one line. It says print 'hello' and follows it with the name parameter. So then down below this I can just call this function. Python knows the function has ended, because there are no more indented lines. Now that looks a little different, if you're used to either the word end or you're used to those curly braces, but it's leads to a very clean readable syntax.

Unlike Ruby, this is a very concise readable language that's easy to get started with. So how would we get started? Well, there are several IDEs and editors that support Python. Two common ones would be the Eclipse IDE with the extension PyDev that helps for Python development and Komodo as well. Although you'll find many programmers' text editors will support Python. Python interpreters are available on every platform and actually built into recent additions of Mac OS X, but the single best resource for getting started would be the website python.org.

This is the official Python website and has a great amount of installers, help, and tutorials for how to get moving with this language.

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This video is part of

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Foundations of Programming: Fundamentals

61 video lessons · 84744 viewers

Simon Allardice
Author

 
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  1. 4m 14s
    1. Welcome
      1m 16s
    2. Making the most of this course
      2m 8s
    3. Using the exercise files
      50s
  2. 22m 11s
    1. What is programming?
      5m 45s
    2. What is a programming language?
      4m 48s
    3. Writing source code
      5m 34s
    4. Compiled and interpreted languages
      6m 4s
  3. 16m 29s
    1. Why JavaScript?
      4m 45s
    2. Creating your first program in JavaScript
      6m 54s
    3. Requesting input
      4m 50s
  4. 31m 38s
    1. Introduction to variables and data types
      5m 16s
    2. Understanding strong, weak, and duck-typed languages
      3m 51s
    3. Working with numbers
      5m 4s
    4. Using characters and strings
      4m 5s
    5. Working with operators
      4m 47s
    6. Properly using white space
      6m 46s
    7. Adding comments to code for human understanding
      1m 49s
  5. 24m 49s
    1. Building with the if statement
      7m 35s
    2. Working with complex conditions
      4m 10s
    3. Setting comparison operators
      6m 59s
    4. Using the switch statement
      6m 5s
  6. 17m 56s
    1. Breaking your code apart
      4m 1s
    2. Creating and calling functions
      2m 57s
    3. Setting parameters and arguments
      6m 7s
    4. Understanding variable scope
      2m 23s
    5. Splitting code into different files
      2m 28s
  7. 13m 32s
    1. Introduction to iteration
      4m 28s
    2. Writing a while statement
      5m 24s
    3. Creating a for loop
      3m 40s
  8. 19m 28s
    1. Cleaning up with string concatenation
      4m 30s
    2. Finding patterns in strings
      8m 3s
    3. Introduction to regular expressions
      6m 55s
  9. 19m 59s
    1. Working with arrays
      5m 47s
    2. Array behavior
      5m 29s
    3. Iterating through collections
      5m 18s
    4. Collections in other languages
      3m 25s
  10. 10m 50s
    1. Programming style
      5m 55s
    2. Writing pseudocode
      4m 55s
  11. 25m 55s
    1. Input/output and persistence
      3m 6s
    2. Reading and writing from the DOM
      8m 11s
    3. Event driven programming
      7m 47s
    4. Introduction to file I/O
      6m 51s
  12. 24m 26s
    1. Introduction to debugging
      5m 57s
    2. Tracing through a section of code
      7m 5s
    3. Understanding error messages
      3m 21s
    4. Using debuggers
      8m 3s
  13. 14m 17s
    1. Introduction to object-oriented languages
      5m 18s
    2. Using classes and objects
      6m 29s
    3. Reviewing object-oriented languages
      2m 30s
  14. 11m 14s
    1. Memory management across languages
      5m 11s
    2. Introduction to algorithms
      4m 2s
    3. Introduction to multithreading
      2m 1s
  15. 29m 20s
    1. Introduction to languages
      1m 42s
    2. C-based languages
      4m 40s
    3. The Java world
      3m 13s
    4. .NET languages: C# and Visual Basic .NET
      6m 17s
    5. Ruby
      3m 4s
    6. Python
      2m 56s
    7. Objective-C
      4m 3s
    8. Libraries and frameworks
      3m 25s
  16. 1m 2s
    1. Where to go from here
      1m 2s

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