Obop 210 lecture 2 python documentation

Obop 210 lecture 2 python documentation

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  NDATA SCHOOL OFCLIMATE AND EARTH SCIENCES EARTH SCIENCES DEPARTMENT Geo-Information Science Section Object Oriented Programming: OBOP 210 – Python Prepared By Emmanuel Chinkaka echinkaka@must.ac.mw
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  Introduction to Python ⚫Python is a high-level programming language ⚫ Open source and community driven ⚫ “Batteries Included” – a standard distribution includes many modules ⚫ Dynamic typed ⚫ Source can be compiled or run just-in-time ⚫ Similar to perl, tcl, ruby
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  Why Python? ⚫ UnlikeAML and Avenue, there is a considerable base of developers already using the language ⚫ “Tried and true” language that has been in development since 1991 ⚫ Can interface with the Component Object Model (COM) used by Windows ⚫ Can interface with Open Source GIS toolsets
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  Why not VisualBasic? ⚫ Visual Basic is still the method of configuring and customizing ArcMap ⚫ If you have a button on the toolbar, it’s VB ⚫ Python scripts can be placed in ArcToolbox ⚫ Python can be run from the command line without ArcMap or ArcCatalog being open ⚫ Using just the GIS Engine, lower overhead ⚫ Rapid prototyping, ease of authoring, etc.
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  Python Interfaces ⚫ IDLE– a cross-platform Python development environment ⚫ PythonWin – a Windows only interface to Python ⚫ Python Shell – running 'python' from the Command Line opens this interactive shell ⚫ For the exercises, we'll use IDLE, but you can try them all and pick a favorite
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  IDLE – DevelopmentEnvironment ⚫ IDLE helps you program in Python by: – color-coding your program code – debugging – auto-indent – interactive shell
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  Example Python ⚫ HelloWorld print “hello world” ⚫ Prints hello world to standard out ⚫ Open IDLE and try it out yourself ⚫ Follow along using IDLE
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  Additional Python Resources ⚫Python Homepage http://www.python.org/ ⚫ Dive Into Python http://www.diveintopython.org/ ⚫ Learning Python, 3rd Edition http://www.oreilly.com/catalog/9780596513 986/ ⚫ Getting Started Writing Geoprocessing Scripts Available on ESRI's support page