Breaking News: Grepper is joining You.com. Read the official announcement!

10. Use Cython to speed up your code

Sumit Rawal answered on May 13, 2023 Popularity 2/10 Helpfulness 1/10

answer 10. Use Cython to speed up your code

10. Use Cython to speed up your code

Comment

Cython is a superset of Python that allows us to write C extensions for Python. This can significantly speed up our code, especially for computationally intensive tasks.

Here is an example of using Cython to speed up a Python function that calculates the sum of squares:

# Python Code
def calculate_sum(n):
    total = 0
    for i in range(n):
        total += i
    return total

# Cython Code
%%cython
def calculate_sum_cython(int n):
    cdef int total = 0
    for i in range(n):
        total += i
    return total
Now, we’ll use Cython to speed up this function. We’ll start by creating a .pyx file containing the Cython version of the function:

# file: sum_squares_cython.pyx

def sum_squares_cython(int n):
    cdef int total = 0
    cdef int i
    for i in range(n):
        total += i**2
    return total
We’ve added type declarations (cdef int) for the variables, which allows Cython to generate faster C code.

To compile the Cython code into a Python extension module, we need to create a setup.py file:

from distutils.core import setup
from Cython.Build import cythonize

setup(ext_modules=cythonize("sum_squares_cython.pyx"))
Now we can compile the extension module by running python setup.py build_ext --inplace. This will create a file called sum_squares_cython.so (or sum_squares_cython.pyd on Windows).

Finally, we can import and use the sum_squares_cython function in Python:

from sum_squares_cython import sum_squares_cython

result = sum_squares_cython(1000000)
print(result)

Popularity 2/10 Helpfulness 1/10 Language python

Source: Grepper

Tags: cython python

Link to this answer
Share Copy Link

Contributed on May 13 2023

Sumit Rawal

0 Answers Avg Quality 2/10

10. Use Cython to speed up your code

Contents

More Related Answers

10. Use Cython to speed up your code

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.