Session1 < AFNOG

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---+ Exercises for session1: Introduction to !IoT and Python
---++ Exercise 1:
   * <p>Write a program that calculates and prints the Fibonacci numbers up to 20 iterations. <br /> The Fibonacci numbers are calculated as follows:<br /> F[0] = 0<br /> F[1] = 1<br /> F[n] = F[n-1] + F[n-2]</p>
   * <p>Modify your program to get the number of iterations from a command line parameter:</p> <p> _fibonacci.py 20_ will calculate and print the same numbers as the exercise above</p>
---++ Exercise 2:

Write a program that checks if a number is a prime number. It will either print that it found a prime number or give a valid divisor. Get the number to be tested again from the command line argument as in exercise 1
---++ Exercise 3:

Modify the above programs into functions that can be called from a main program and write this main program into the same file (Test if __name__ is “__main__” to be able to run the program).

Then write a main program in a separate file and import the <i>module </i>into your main program. Call the function in the module

Do the same thing for the prime example
---++ Exercise 4:

Add a module with a function calculating the factorial of a number:

factorial(n) = 1*2*3*4… *n
---++ Exercise 5:

Finally put the fibonacci, the factorial and the prime module into a packet. How do you have to import and call the functions now? If the number if iterations is smaller than 1, raise a !ValueError
---++ Exercise 6:

Convert the packet with the 3 math functions into a class with the methods:
   * <p>prime</p>
   * <p>fibonacci</p>
   * <p>factorial</p>
How do you call the functions now?
---++ Exercise 7:

Write a callback function printing “Hello” and a program with an endless main loop which calls the callback function once every 2 s.

-- %USERSIG{UliRaich - 2019-05-27}%

---++ Comments

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Topic revision: r1 - 2019-05-27 - UliRaich