• Calculate

  

https://afnog.iotworkshop.africa/pub/IoT_Course_English/REPLAndStandardPythonProgramming/exercise_1.odt

• zero or more spaces

• followed by one '+' or one '-'
• followed by
  • a ‘.’ followed by at least one digit
• or
  
  • at least one digit followed by zero or one ‘.’ followed by zero or more digits

• followed be zero of more spaces

https://docs.micropython.org/en/latest/library/ure.html

Exercise 5: A bit of Mathematics: Calculate the sine function

ampy mkdir /lib

ampy put mathSeries.py /lib/mathSeries.py

Once this is done, go to the REPL window of thonny and

import mathSeries

You can now create an instance of the MathSeries class:

series = mathSeries.MathSeries()

When running on a PC you may want to plot the series as well. If you don't know how to plot data in Python, you will find all the information needed here:
https://matplotlib.org/3.2.1/index.html

Exercise 5: Some maths: Calculate the sine function

Write a script that asks the user for an angle in degrees. Calculate the sine of this angle.

Exercise 6: Classes

Write a Python class with methods calculation mathematical number series. These series should be calculated:

• The Fibonacci numbers up to F(n). n is passed as parameter to the method
• The Fibonacci numbers smaller than max. max is passed as parameter to the method
• The prime numbers up to max
• Factorial:
  
• The geometric number series:
  
• The harmonic number series:
  
  Can you tell what the following series calculate?

When running on a PC you may want to plot the series as well.

Exercise 1: Use of REPL

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

Exercise 2: A simple calculator

Exercise 3: Conditions

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

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

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:

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.

Course on Internet of Things

Exercises Session 1:

Exercise 1:

Connect to your ESP32 with minicom or thonny.

Using REPL:

• print “Hello World!”

• 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?

Exercise 2:

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

Print the results of 4 basic arithmetic operations:

• a+b

• a-b

• a*b

• a/b

Improve this program asking the user to enter 2 integers separated by a space. If this happens when the user mistypes and enters something that is not an integer can you capture the error and simply ask him to repeat his input until you get 2 correct integer numbers?

Bonus points: Writing a parser is quite easy if the numbers are separated. It is quite a bit more tricky if you allow entering calculations with spaces between the operands and the operator. Can you write a parser accomplishing this?

Exercise 1:

Connect to your ESP32 with minicom or thonny.

Using REPL:

• print “Hello World!”

• 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?

Exercise 2:

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

Print the results of 4 basic arithmetic operations:

• a+b

• a-b

• a*b

• a/b

Improve this program asking the user to enter 2 integers separated by a space. What happens when the user mistypes and enters something that is not an integer?

Can you capture the error and simply ask him to repeat his input until you get 2 correct integer numbers?

Exercise 3:

Ask the user for 2 integer numbers. Check with one is bigger and print the result:

Running the program should result in output as shown below:

Exercise 3:

Ask the user for 2 integer numbers. Check with one is bigger and print the result:

Running the program should result in output as shown below:

-- Uli Raich - 2020-05-03

Comments

<--/commentPlugin-->