le = LabelEncoder()

for var in categorical_variables:

      train[var] = le.fit_transform(train[var])

​

###

### after model building and testing step

###

​

predictions_test = le.inverse_transform(prediction_test)

le = LabelEncoder()

for var in categorical_variables:

      train[var] = le.fit_transform(train[var])

​

###

### after model building and testing step

###

​

predictions_test = le.inverse_transform(prediction_test)