How to test and import a model form computer to test accuracy using Sklearn library

[Anldra12]

Which types of data model we can test
like which format don't know i have some model i want to check the accuracy using logistic regression for the accuracy
I download some models
where my task to predict feathers for the same model using Secure KNN algorithm
Looks at the below codes

# read in the iris data
from sklearn.datasets import load_iris
iris = load_iris()

# create X (features) and y (response)
X = iris.data
y = iris.target
# import the class
from sklearn.linear_model import LogisticRegression

# instantiate the model (using the default parameters)
logreg = LogisticRegression()

# fit the model with data
logreg.fit(X, y)

# predict the response values for the observations in X
logreg.predict(X)
# store the predicted response values
y_pred = logreg.predict(X)

# check how many predictions were generated
len(y_pred)