Introduction to Python

Introduction to Python

1. Strings and Variables

   • 1.Sequencing instructions
     • 2. Sequence Order is important
       • 3.Accuracy is important
     • Programming
       • Example code

2. Python language

   • Simple to learn
   • Used By:
     • NASA,Nokia, Google Search engine, Paint shop pro
       • Civilisation 4 Computer Game, CERN Large Hadron Collider Research

3. Python's development Environment

   • IDLE-Integrated development environment
     • 2 types:
       • Interactive mode -Let's you see your results as you type them
         • Script mode: lets you save your program and run it again later
           • Computer bugs The name ‘Bug’ refers to an error in a program Thought to come from a real bug that crawled into some cogs in an early machine and stopped it working
           • A variable is a location in memory in which you can temporarily store text or numbers It is used like an empty box or the Memory function on a calculator You can choose a name for the box (the “variable name”) and change its contents in your program
             • A variable name can contain only numbers, letters and underscores A variable name cannot start with a number You can’t use a Python “reserved word” as a variable name – for example class is a reserved word so class = input() will result in a syntax error

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