Lisp Interpreter in Python. Made for final project in CIS4930

• python3 main.py
• Requires Python3

• define: Binds a symbol to an expression
• eq?: Checks if 2 values are equal
• quote: Returns the symbols it is passed
• cons: Returns a list containing the 2 arguments
• car: Returns the first element of a list
• cdr: Returns a list of all but the first element in a list
• atom?: Returns true if the argument is an atom
• lambda: Creates a user defined function. Used with the define function to bind a symbol to a function
• cond: Creates a block if if/then/else statements
• Also supports 4 basic arithmatic operations + - * /

• Use !quit to quit the program
• Use !load to load in lisp definitions from a given file
  • example: !load test.file
• test.file is provided with simple function definitions for boolean operations