Error when calling ScikitLearn from a function in a Package

Thanks! This works,

using ScikitLearn, PyCall

const LogisticRegression = PyNULL()

function __init__()
    @eval @sk_import linear_model: LogisticRegression
end

function logistic_skl(points::AbstractMatrix{<:Real}, labels::AbstractVector{Bool})
    log_reg = fit!(LogisticRegression(penalty="l2"), points', labels)
    w = vec(log_reg.coef_)
    b = only(log_reg.intercept_)
    return w, b
end

However, I do get a warning from modifying the const:

WARNING: redefinition of constant LogisticRegression. This may fail, cause incorrect answers, or produce other errors.

So I suppose there should still be a better way.