env_v1.py

# The EnvironmentManager class keeps a mapping between each variable (aka symbol)
# in a brewin program and the value of that variable - the value that's passed in can be
# anything you like. In our implementation we pass in a Value object which holds a type
# and a value (e.g., Int, 10).
class EnvironmentManager:
    def __init__(self):
        self.environment = {}

    # Gets the data associated a variable name
    def get(self, symbol):
        if symbol in self.environment:
            return self.environment[symbol]
        return None

    # Sets the data associated with a variable name
    def set(self, symbol, value):
        self.environment[symbol] = value

    def print(self):
        print("\n----\nfinal dictionary:\n")
        for key in self.environment.keys():
            print("var: " + str(key) + ", value: " + str(self.environment[key].value()))