TypeError: integer argument expected, got float

Question

This is my first time asking a question on Stack Overflow so I apologize in advance if my question is too vague or if not enough information is provided.

Basically the problem I am having is that my code will not run due to a TypeError.

Here is the exact message:

Traceback (most recent call last):
  File "C:\Program Files (x86)\Wing IDE 101 4.0\src\debug\tserver\_sandbox.py", line 61, in <module>
  File "C:\pygamehelper.py", line 62, in mainLoop
  File "C:\Program Files (x86)\Wing IDE 101 4.0\src\debug\tserver\_sandbox.py", line 54, in draw
TypeError: integer argument expected, got float

So I think that the error is occurring due to the tuple associated with pos being converted to a vector using the vec2d method, and then being passed as an argument (as a float) to the draw.circle method in line 54, where an int is being expected. This is how it was done in the tutorial that I am following however, and his code is identical and executed without problems.

Could it possibly be due to him using a different version of Python, or PyGame, or is there something wrong with my code?

Thanks in advance for your help.

from pygamehelper import *
from pygame import *
from pygame.locals import *
from vec2d import *
from math import e, pi, cos, sin, sqrt
from random import uniform

class Agents:
    def __init__(self):
        self.pos = vec2d(0, 0)
        self.target = vec2d(0, 0)

class Starter(PygameHelper):
    def __init__(self):
        self.w, self.h = 800, 600
        PygameHelper.__init__(self, size=(self.w, self.h), fill=((255,255,255)))

        self.agents = []

        for i in range(10):
            a = Agents()
            a.pos = vec2d(uniform(0, self.w), uniform(0, self.h))
            a.target = vec2d(uniform(0, self.w), uniform(0, self.h))
            self.agents.append(a)

    def update(self):

        for a in self.agents:

            dir = a.target - a.pos
            dir.length = 5
            a.pos = a.pos + dir

    def keyUp(self, key):
        pass

    def mouseUp(self, button, pos):

        for a in self.agents:
            a.target = vec2d(pos)

    def mouseMotion(self, buttons, pos, rel):
        pass

    def draw(self):

        # clear the screen 40 times / sec so that only 1 char and target
        # present on screen at a time
        self.screen.fill((255,255,255))


        for a in self.agents:
            # character
            pygame.draw.circle(self.screen, (200, 200, 255), a.pos, 10)
            # black character outline
            pygame.draw.circle(self.screen, (0, 0, 0), a.pos, 11, 1)
            # target
            pygame.draw.circle(self.screen, (200, 0, 0), a.target, 20, 1)

s = Starter()
s.mainLoop(40)

Dan D. · Accepted Answer · 2011-12-12 00:54:21Z

1

random.uniform(a,b) returns a float. use int(random.uniform(a,b)) for an integer.

answered Dec 12, 2011 at 0:54

Dan D.

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Comments

Paianf · Accepted Answer · 2012-01-12 04:06:12Z

1

It seems that your tuiototouch.py on line 92 is passing a float argument (self.x_mouse). Uinput expects only integers.

I think that the int-conversion could be done under the hood in suinput. So perhaps suinput should make sure that ev_value is integer before it passes it to the uinput-system.

So there are two possible solutions. I could either

document the integer requirement for uinput.Device.emit()

or

allow any numerical type and typecast it to integer in suinput

I'm not sure right away which is better, I'll think about it for a while.

Meanwhile, I think you can fix this by typecasting self.x_mouse to int in tuiototouch.py: int(self.x_mouse).

answered Jan 12, 2012 at 4:06

Paianf

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