Comparing Cython, mpypyc, and default Python speed¶

On a simple thing:

In [1]:

%load_ext mypyc_ipython

In [2]:

def py_fibonacci(n: int) -> int:
    if n <= 1+1:
        return 1
    else:
        return py_fibonacci(n-1) + py_fibonacci(n-2)

In [3]:

%%mypyc
def my_fibonacci(n: int) -> int:
    if n <= 2:
        return 1
    else:
        return my_fibonacci(n-1) + my_fibonacci(n-2)

In [4]:

%load_ext cython

In [5]:

%%cython
cpdef int cy_fibonacci(int n):
    if n <= 2:
        return 1
    else:
        return cy_fibonacci(n-1) + cy_fibonacci(n-2)

In [6]:

%timeit py_fibonacci(30)

101 ms ± 503 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)

In [7]:

%timeit my_fibonacci(30)

8.55 ms ± 248 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

In [8]:

%timeit cy_fibonacci(30)

2.35 ms ± 75.3 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

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