Python Basics

Two Coursera classes (An Introduction to Interactive Programming in Python, Learn to Program: The Fundamentals) provide very good python beginner learning materials. Python is a Interpreted Language

Quick Summary and Python Notes

• Guido van Rossum is author of python, Good Wikipedia read about him in link  
• Python Practice Book
• Notes from Advaced Python Workshop
• Online Editor available at CodeSkulptor
• Also check Very Good Question Is Python Interpreted or Compiled?
• Good Book to Get Started - A Byte of Python -Swarooph
• Learning Python the hard way

Basic Examples and beginner notes posted based on course notes. All Code can be tried in CodeSkulptor.  There are a few syntax differences but this is similar to C programming language.

Example1 - Arithmetic Expressions

• Basic Arithmetic Expressions
• Variables, Assignments, Sample Exercise in link

All Scripts can be run in FireFox / Chrome in CodeSkulptor (Not in IE)

Example 2 - Working with Functions
Built In functions - max, abs

Example 3 - Custom Functions

• Example function to sum up two numbers

Example 4 - If Statement - Conditons , Else If and Else Operator

Example 5 - For Loop - Iteration

Example 6 - While Loop iteration

	#https://github.com/swaroopch/byte-of-python/blob/master/programs/ds_using_dict.py
	#using dictionary
	ab = {
	'Swaroop':'swaroop@swaroop.ch',
	'Larry':'larry@wall.org',
	'Matsumoto':'mat@ruby.org',
	'Spammer':'spammer@hotmail.com'
	}
	#print
	print('Swaroop address is', ab['Swaroop'])
	#Iterate
	for name, address in ab.items():
	print('Contact {} at {}'.format(name,address))
	#Add Value
	ab['Siva'] = 'sivaram2k10@gmail.com'
	for name, address in ab.items():
	print('Contact {} at {}'.format(name,address))
	#https://github.com/swaroopch/byte-of-python/blob/master/programs/while.py
	#https://github.com/swaroopch/byte-of-python/blob/master/programs/io_pickle.py
	#https://github.com/swaroopch/byte-of-python/blob/master/programs/more_lambda.py
	#https://github.com/swaroopch/byte-of-python/blob/master/programs/oop_subclass.py
	#https://github.com/swaroopch/byte-of-python/blob/master/programs/exceptions_finally.py
	#https://github.com/swaroopch/byte-of-python/blob/master/programs/ds_using_tuple.py
	number = 23
	running = True
	while running:
	guess = int(input('Enter an integer:'))
	if guess == number:
	print('You guessed it')
	running = False
	elif guess < number:
	print('Number low')
	else:
	print('Number High')
	else:
	print('While Loop Over')
	print('Done')
	#https://github.com/swaroopch/byte-of-python/blob/master/programs/ds_using_list.py
	shoplist = ['apple','mango','carrot','banana']
	print('I have',len(shoplist),'items to purchase')
	print('These items are:', end=' ')
	for item in shoplist:
	print(item,end=' ')
	#append an item
	shoplist.append('rice')
	print('New Shopping List',shoplist)
	print('Sorted Shopping List')
	shoplist.sort()
	print(shoplist)
	print('First Item',shoplist[0])
	del shoplist[0]
	print('First Item',shoplist[0])
	print(shoplist)
	#https://github.com/swaroopch/byte-of-python/blob/master/programs/stdlib_logging.py
	import os
	import platform
	import logging
	if platform.platform().startswith('Windows'):
	logging_file = os.path.join(os.getenv('HOMEDRIVE'), os.getenv('HOMEPATH'),'test.log')
	else:
	logging_file = os.path.join(os.getenv('HOME'),'test.log')
	print(logging_file)
	logging.basicConfig(
	level=logging.DEBUG,
	format = '%(asctime)s : %(levelname)s : %(message)s',
	filename = logging_file,
	filemode='w'
	)
	logging.debug('Start of program')
	logging.info('Do Something')
	logging.warning('Dying now')

view raw Python_Examples.py hosted with ❤ by GitHub

Happy Learning!!!