List Indices Must Be Integers, Not Str.

[Larz60+]

Run it this way -- see the value of print statements

def fizz_count(x):
   count = 0
   print(x)
   for y in x:
       print(y)
       if x[y] == "fizz":
           count = count + 1
   print count

GroceryItems = ["fizz","soda", "apple", "fizz", "fizz"]

fizz_count(GroceryItems)