A Python Tutorial
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Presentation used for tutorial session on Python for finalists of CSEA Code Maestros on Feb 11, 2012. More resources at http://athena.nitc.ac.in/~k4rtik/python/
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A Python Tutorial
- 1. A Python Tutorial Computer Science and Engineering Association NIT Calicut Code Maestros
- 2. Contents ● Why Python? ● Interpreter Fun ● Live Demo ● Scripts ● Examples and QA ● Python in... ● References ● License and Sharing Info
- 3. Why Python? ● Popular ● Open Source ● Cross Platform ● Easy to learn ● Forces the programmer to write readable code ● General purpose - used almost everywhere from games to robotics
- 4. Interpreter Fun ● Python interpreter - good for little experiments ● read-eval-print loop ● No need to declare variables ● Variables don't have types, but values do k4rtik@PlatiniumLight ~ $ python Python 2.7.2+ (default, Oct 4 2011, 20:06:09) [GCC 4.6.1] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>>
- 5. Live demo
- 6. Scripts (like bash!) #!/usr/bin/python import sys a = 123 def cat(filename): """Given filename, print its text contents.""" print filename, '=======' f = open(filename, 'r') for line in f: print line, f.close()
- 7. Continues... def main(): args = sys.argv[1:] for filename in args: if filename == 'voldemort'or filename == 'vader': print 'this file is very worrying' cat(filemane, 123, bad_variable) else: cat(filename) print 'all done' if __name__ == '__main__': main()
- 9. Python in... ● Web ○ Django, ZOPE, WebPy, TurboGears ● Scientific Computing ○ NumPy, SAGE ● GUI Development ○ PyGtk, PyQt ● Game Dev ○ PyGame ● Network Programming ○ Twisted
- 10. References ● Python in One Easy Lesson - http://www-cs-faculty. stanford.edu/~nick/python-in-one-easy-lesson/ ● Google's Python Class - http://code.google. com/edu/languages/google-python-class/index.html
- 11. License and Sharing Info This work by CSEA, NIT Calicut is licensed under a Creative Commons Attribution-NonCommercial 2.5 India License.