Need the rest of this code in Python:

import math import pandas as pd def information_gain_target(dataset_file): # Input: dataset_file - A string variable which references the path to the dataset file. # Output: ig_loan - A floating point variable which holds the information gain associated with the target variable. # # NOTE: # 1. Return the information gain associated with the target variable in the dataset. # 2. The Loan attribute is the target variable # 3. The pandas dataframe has the following attributes: Age, Income, Student, Credit Rating, Loan # 4. Perform your calculations for information gain and assign it to the variable ig_loan df = pd.read_csv(dataset_file) ig_loan = 0 # your code here