Python for the Curious by Stef Sy

slides prepared for the "Python for the Curious" codelab at GDG Women Techmakers 2015, March 28, 2015

Transcript

1. Welcome to the PyLadies Codelab! see us for installation help
2. Structure 20 minutes installing 45 mins on Python fundamentals 5 minutes on the local community 50 minutes working on Project Euler problems raise your hand for a coach!
3. Why Python? Versatile and popular Lots of jobs Lots of great libraries Incredible community
4. Where is Python used?
5. Let’s start! Open up Sublime Text 2 or the terminal >> print “Hello World”
6. Dynamic and Strongly Typed Python is dynamically typed. Python intelligently assigns types, you can rebind a variable to different types of values. Python is strongly typed. Cannot mix variables of different types w/o explicitly converting type.
7. Comments
8. if …. else ….
9. Woah, what’s with that indentation!? Python doesn’t use braces or parens to distinguish between blocks of code. Code blocks are defined by an indentation. An indent is 4 spaces! This leads to highly readable code less prone to human error.
10. lists similar to arrays
11. range() simple generation of lists of integers
12. For and While loops
13. Python vs Java
14. Classes
15. List Comprehension >> [10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
16. Live Coding Session! Project Euler Problems 5 coaches will be floating around the room. Raise your hands if you’re stuck! HAVE FUN!
17. PROJECT EULER PROBLEM 1 If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000.
18. PROJECT EULER PROBLEM 4 A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99. Find the largest palindrome made from the product of two 3-digit numbers. Hint: str(100) == ‘100’
19. PROJECT EULER PROBLEM 5 2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20? Hint: 4 % 2 == 0