# 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 entropy 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