[pygame] Python comparing float

[Ricardo Franco <ricardo.krieg@xxxxxxxxx>]

Hi, this is more a question about python than pygame. Considering this code:

#####################################################

rate = 1

desired_rate = 2

while True:

    if rate != desired_rate:

        print rate, desired_rate, (rate != desired_rate)

        rate += 0.1 * (1 if desired_rate > rate else -1)

    # if

# while

#####################################################

It should smoothly move rate from 1 until 2.

But the output is this:

1 2 True

1.1 2 True

1.2 2 True

1.3 2 True

1.4 2 True

1.5 2 True

1.6 2 True

1.7 2 True

1.8 2 True

1.9 2 True

2.0 2 True

1.9 2 True

2.0 2 True

1.9 2 True

2.0 2 True

1.9 2 True

2.0 2 True

1.9 2 True

2.0 2 True

...

Is python missing in comparison?

--
Ricardo Franco Andrade             @ricardokrieg

( Game | Desktop | Web ) Developer

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