cannot import name 'OLS' from 'statsmodels.formula.api'

Question

I have this code:

from statsmodels.formula.api import OLS

The error is as follows:

ImportError: cannot import name 'OLS' from 'statsmodels.formula.api'

I tried updating statsmodels, but it does not work

Pika

import statsmodels.api as sm; sm.OLS ? – Compunction

in fact, if I use that code, another error occurs: "DLL load failed:The specified module can not be found" – Pika

DLL load failed usually means that at least one of statsmodels, numpy, scipy or pandas is not correctly installed – Discursive

Answer 1

The formula API always uses lower case since these are functions and not classes, and so you can use

from statsmodels.formula.api import ols

or the more canonical

import statsmodels.formula.api as smf
smf.ols("y ~ x", df)

Ramentum