\we are discussion about decision tree which falls under supervised learning algorithm and used for classification and regression both. I Will try to cover to each and every topic regarding this algorithm and write python code to implement the same. before falling to discussion, we need understand this popular technique of machine learning. now the definition is: this tree like structure and a kind of predictive modeling approach. it has tree like structure upside down use to represent decision for decision making. this can handle high dimensional data with high accuracy. this tree also used to predict house price, car value and categorical data as well. the decisoion tree represent root node,terminal node,decision node and branches. sandhyakrishnana decion tree medium