Keep getting error when using += operation between two variables - Python

Question

I currently have a bit of code that adds a certain amount of points to a plyers score:

points = 5
player1 = 0
float(points)
float(player1)
player1 += points
points = 0

The problem is when I run this I get this error:

TypeError: unsupported operand type(s) for +=: 'int' and 'str'

At first, I thought it had to do with the data types of the variables, points and player1 but I have a float function right before it. Also just for debugging purposes I wrote a bool statement print(bool(float(var))) to check if it was floating correct and it wasn't. The points variable floated correctly but it was saying that player1 was not a float. Any ideas on why this is happening?

float(points) doesn't change points. It should be points = float(points) — Barmar
– Barmar, Commented Oct 7, 2021 at 18:10
That error can't happen with the code you showed. points = 5 makes it an int, not str. — Barmar
– Barmar, Commented Oct 7, 2021 at 18:10
This code doesn't have any string variables. Show us the real code. — John Gordon
– John Gordon, Commented Oct 7, 2021 at 18:17

Unmitigated · Accepted Answer · 2021-10-07 18:10:22Z

2

If you are reading user input, you need to assign the result of float to the variable.

points = float(points) # convert existing string, or use float(input())
player1 = float(player1)

answered Oct 7, 2021 at 18:10

Unmitigated

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1 Comment

Chickcoder2 Over a year ago

Ok I'm stupid can't believe I forgot this, thanks a lot.

SilentCloud · Accepted Answer · 2021-10-08 13:18:16Z

0

First of all, I was not able to reproduce the error, meaning I executed your code and did not get the error.

Second: When you cast a variable as: float(points) you must save the casting in a variable (or update the previous one).

points = float(points)

Note: in your case, you don't need to cast the variable to float because you are using only int values.

edited Oct 8, 2021 at 13:18

SilentCloud

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answered Oct 7, 2021 at 18:14

Wenderson J.

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