Python implementation of tree data structure

Implemented classes Node and Tree. Class Tree includes:

• insertion
• visual representation of the tree
• breadth first search
• depth first search
• preorder traversal
• postorder traversal
• check if the tree is full
• check if the tree is complete
• check if the tree is perfect

In order to view graphical representation of a tree using print() function, install Graphviz graph visualization software and add it to your environmental variable path.