Second steps

1. Modules
2. A main function
3. The main function - called
4. Indentation
5. Conditional main
6. Input - Output I/O
7. print in Python 2
8. print in Python 3
9. print in Python 2 as if it was Python 3
10. Exception: SyntaxError: Missing parentheses in call
11. Prompting for user input in Python 2
12. Prompting for user input in Python 3
13. Python2 input or raw_input?
14. Prompting both Python 2 and Python 3
15. Add numbers entered by the user (oups)
16. Add numbers entered by the user (fixed)
17. Can we convert a string to int or float?
18. How can I check if a string can be converted to a number?
19. Converting string to int
20. Converting float to int
21. How can I check if a string can be converted to a number?
22. Conditionals: if
23. Conditionals: if - else
24. Divide by 0
25. Conditionals: if - else (other example)
26. Conditionals: else if
27. Conditionals: elif
28. Ternary operator (Conditional Operator)
29. Case or Switch in Python
30. Exercise: Rectangle
31. Exercise: Calculator
32. Exercise: Age limit
33. Exercise: What is this language?
34. Exercise: Standard Input
35. Solution: Area of rectangle
36. Solution: Calculator
37. Solution: Calculator eval
38. Solution: Age limit
39. Solution: What is this language?
40. STDIN vs Command line arguments
41. Command line arguments
42. Command line arguments - len
43. Command line arguments - exit
44. Exercise: Rectangle (argv)
45. Exercise: Calculator (argv)
46. Solution: Area of rectangle (argv)
47. Solution: Calculator (argv)
48. Solution: Calculator eval
49. Compilation vs. Interpretation
50. Is Python compiled or interpreted?
51. Flake8 checking
52. Pylint checking