logistic regression using more than one predictor

Question

I want to fit a logistic regression model that predicts Y using X1 and X2. What I know is that we use the following method:

x_train, x_test, y_train, y_test = train_test_split(X,Y,test_size)

and then

model = LogisticRegression()
model.fit(x_train,y_train)

To predict Y using X, I don't know how to train the data using more than one predictor. Any help, please?

Answer 1

If there are 2 features X1 and X2, then the training data X will have 2 columns. For example if data has 1000 X1 and 1000 X2, then the shape of X should be (1000 x 2)

For example you have a csv file with 3 columns: X1, X2, y

import pandas as pd
from sklearn.metrics import accuracy_score
from sklearn.model_selection import train_test_split
from sklearn.linear_model import LogisticRegression

df = pd.read_csv('my_file.csv')
X = df[['X1', 'X2']]
Y = df['y']

x_train, x_test, y_train, y_test = train_test_split(X, Y, test_size=0.2)
model = LogisticRegression()
model.fit(x_train,y_train)

y_pred = model.predict(x_test)

acc = accuracy_score(y_test, y_pred)