Difference: REPLAndStandardPythonProgramming (3 vs. 4)

Revision 42020-05-04 - UliRaich

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META TOPICPARENT	name="Exercises"

Course on Internet of Things

Exercises Session 1:

Introductory remarks:

The scripts we are going to develop during these exercises do not depend on any system issues: We do not use command line arguments not available in MicroPython nor do we use any hardware specific features which are not available on a PC. The exercises can therefore be developed and run on the ESP32 but also on any standard PC with Python3 installed.

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Exercise 1:

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Exercise 1: Use of REPL

Connect to your ESP32 with minicom or thonny.

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read in a text using input() and print it
Calculate
Calculate sin(30°)
If you see errors, how do you correct them? Are the results correct?

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Exercise 2:

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Finally make the "print Hello World!" command a script and execute it.

Exercise 2: A simple calculator

Write a script that assigns the values 5 and 3 to the variables a and b respectively

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5.3+4b7	not ok
empty string	not ok
5.3+.	not ok

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5.3 + 4

Exercise 3:

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Try also several spaces in between operands and operator.

Exercise 3: Conditions

Like in exercise2, start with 2 numbers a,b with values 5 and 3. In your program check which of the 2 numbers is bigger and print the result.

Then improve the program asking the user for 2 integer numbers. Make sure he enters 2 correct numbers and capture possible errors. This is a typical output:

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Exercise 4: The Fibonacci series

The Fibonacci number series is defined as:

F(0) = 0; F(1) = 1

F(n) = F(n-1) + F(n-2)

Calculate and print out the Fibonacci numbers up to F(n). Get n from the user where n >= 0

Try your program for n=0, n=1, n=2, n=3, n=20

Ask the user up to which is the maximum number up to which you should calculate.

Uli Raich - 2020-05-03

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