Some real-world examples

Here are more examples of how PyPy can improve performance, as well as some practical uses of the environment.

How to do it...

1. The following code (time.py) uses the Pythagorean Theorem to calculate the hypotenuse for a number of triangles with increasing side lengths:

        import math

        TIMES = 10000000
        a = 1
        b = 1

        for i in range(TIMES):
            c = math.sqrt(math.pow(a, 2) + math.pow(b, 2))
            a += 1
            b += 2

2. The following code (time2.py) does the same thing as pythag_theorem.py but puts the calculations within a function, rather than performing the calculation in line:

        import math

        TIMES = 10000000
        a = 1
        b = 1

        def calcMath(i, a, b):
            return math.sqrt(math.pow(a, 2) + math.pow(b, 2))

        for i in range(TIMES):
            c = calcMath(i, a, b)
            a += 1
            b += 2 

3. The following screenshot shows the time-to-complete differences between regular...