Creating Software

Creating Software

1. IDE

   • Python IDLE
     • Editor
       • Colour codes command words
       • Auto indents code
       • Some autocomplete code as you type it
     • Run time environment
       • Allows the user to run the code quickly to test it
     • Error Diagnosis
       • Locates errors are suggests ways to fix it
   • PyCharm
     • Run time environment
       • Lets user run the code to test it
     • Interpreter used
     • Editor
     • Error diagnosis
   • PyScripter
     • Editor
     • Interpreter used as translation
     • The user can run the code quickly to test it
     • Error diagnosis
   • 4 main features
     • Translators (compiler and interpreter)
     • Run time environment
     • Editor
     • Error diagnosis (debugging tools)

2. Generations of languages

   • Low level languages
     • 1st generation
       • Machine code (1s and 0s)
     • 2nd generation
       • Assembly language
         • Uses a simple command for each collection of 1s and 0s
         • Uses an assembler to convert to machine code
       • One assembly code command = one machine code instruction
   • High level languages
     • 3rd generation
       • Python
       • Compiled or interpreted
       • One high lever instruction = many machine code instructions
     • 4th generation
       • Declarative language
       • Facts and rules are stated