i get the error when i initialize the array in python

dbconn.py

File "/var/www/html/python/flask_movie/dbconn.py", line 35, in userRegister

        # name = request.json['name']
        # company_name = request.json['company_name']
        # address = request.json['address']
 
        myArray = []
        myArray["john"] = "johns value"
        myArray["jeff"] = "jeffs value"
        print myArray["john"]
 
        # return lists
 
TypeError: list indices must be integers, not str