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Chapter 1: Python Basics

Chapter 1: Python Basics. CSCI-UA 0002 – Introduction to Computer Programming Mr. Joel Kemp. Agenda. What is Python? How do we get it? How do we execute our programs?. This material can be found in Chapter 3 of the Visual Quickstart Guide. What is Python?.

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Chapter 1: Python Basics

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  1. Chapter 1: Python Basics CSCI-UA 0002 – Introduction to Computer Programming Mr. Joel Kemp

  2. Agenda • What is Python? • How do we get it? • How do we execute our programs? This material can be found in Chapter 3 of the Visual Quickstart Guide

  3. What is Python? • A programming language that emphasizes readable code! • Combines power with clear syntax. • Interpreted not compiled! • Why are we using it? • Very beginner friendly! • Beginners shouldn’t be burdened with syntax. • Semicolons, braces, pointers, datatype declarations. • Increases programmer productivity.

  4. From Design to Interpretation

  5. Installing Python • Visit python.org/download • For Windows Users: Python 3.2 Windows x86 MSI installer • For Mac Users: Python 3.2 64-bit/32-bit Installer • Run the downloaded installer and complete the installation process.

  6. Before We Start • Python code is placed in a regular text file that must end with the .py extension. • Can be written in any plain text editor : • Notepad, Notepad++ (Windows) • TextEdit, TextWrangler (Mac OSX) • Avoid using Wordpad and Microsoft Word! • Integrated Development Environment (IDE) • Definition: a large computer program that provides tools for increasing productivity in software development. • Tools: • Intellisense/Auto-Completion • Real-time error-checking • Debugging • Compiler and/or Interpreter • We’ll be using the IDLE IDE!

  7. IDLE IDE • Included with the Python Installation! • Written in Python! • Allows us to bypass running python files from the command line!

  8. Running a Python File (Command Line) • Open the command prompt or terminal. • Navigate to the location of the python file: • Use the cd command to access folders. • Use the cd command with two periods (cd ..) to move backward in the filesystem. • To run/interpret the python file: • Type python filename.py(where filename is the file you’re trying to run)

  9. Running a Python File (IDLE) • Create a new file or open an existing python file. • Click on the Run Module button in the Run menu!

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