Should I use scipy.pi, numpy.pi, or math.pi?

python numpy scipy pi
Douglas B. Staple picture Douglas B. Staple · Sep 28, 2012 · Viewed 164.1k times · Source

In a project using SciPy and NumPy, should I use scipy.pi, numpy.pi, or math.pi?

Answer

BrenBarn picture BrenBarn · Sep 28, 2012 
>>> import math
>>> import numpy as np
>>> import scipy
>>> math.pi == np.pi == scipy.pi
True

So it doesn't matter, they are all the same value.

The only reason all three modules provide a pi value is so if you are using just one of the three modules, you can conveniently have access to pi without having to import another module. They're not providing different values for pi.

Related questions

Import Error: No module named numpy

I have a very similar question to this question, but still one step behind. I have only one version of Python 3 installed on my Windows 7 (sorry) 64-bit system. I installed numpy following this link - as suggested in the question. …

Read More
How do I read CSV data into a record array in NumPy?

I wonder if there is a direct way to import the contents of a CSV file into a record array, much in the way that R's read.table(), read.delim(), and read.csv() family imports data to R's data frame? …

Read More
Moving average or running mean

Is there a SciPy function or NumPy function or module for Python that calculates the running mean of a 1D array given a specific window?

Read More