Changed the JSON generator to generate JSON that includes the correct answer for the expression.

main.py

@@ -1,5 +1,6 @@
 import token
 import tokenizer
+import expression
 import calc_engine
 import json
 
@@ -9,6 +10,10 @@ fileLocation = input('File Path to JSON: ')
 
 #userInput = input('Enter your formula: ')
 tokens = tokenizer.get_tokens_from_expression_string("2 + 6 / 2")
+with open("expression.json", "r") as f:
+	j = json.load(f)
+	exp = expression.Expression(json.loads(j))
+	print(exp)
 #results = calc_engine.calculate_results(tokens.copy())
 #print(results)