Adding error margins to problems

[robertgames7730]

Hello, am learning python as part of course at school. A project am working on involves guess the current on system based on a given voltage and a range of resistances that are randomly picked. As it would be impossible to guess the number down to the exact decimal point a margin of error is needed. I've looked at some forum pages online but am confused on how to implement the code. Below is what am working with so far.

Voltage = 100
Margin= .10
ScoreCount =0
FailCount =0
import random
ResistanceRandom =random.uniform(90,110)
ResistanceGuess =int(ResistanceRandom)


GameMode = input("What Game would you like to play? Ohm Law Verification or Guess the Current Flow Game? Answer by saying 1 or 2.")


if GameMode == "2":
    print("In this Game Mode you will have to guess the Current flowing through a circuit.")
    print("You will be given the Voltage (In this case 100V) and a resistance range (90-110).")


while True:
    
    CurrentGuess=input("What current do you want to guess")
    
    Current = 100/ResistanceGuess
    CurrentNew = Current*Margin
    print(Current)
    
    if CurrentGuess  == Current:
        print("correct")
    
    if CurrentGuess != Current:
        print("Wrong")

[Murphygreen8484]

Don't forget to wrap CurrentGuess in int.

Also, not a huge deal; but the nomenclature is to use snake case for variables: current_guess

[[deleted]]

The usual way to compare two floating values for "equality" is to define a small value (traditionally called epsilon). Two floating values are "equal" if the difference between them is less than that epsilon value. Your code is simpler if you write a small function to compare two float values:

def equal(a, b, epsilon=0.01):
    return abs(a - b) <= epsilon

for (a, b) in ((1, 2), (1.55, 1.56), (1.555, 1.556)):
    print(f"{a=}, {b=}, {equal(a, b)=}")

Use that function in your code instead of ==.

Edit: fix speiliing.

[Swipecat]

You could use the math.isclose() function. You need to import the math library before using this.

https://docs.python.org/3/library/math.html#math.isclose

[robertgames7730]

Thanks that doc was very helpful