#dictionaries!!

my_dict = {}
my_dict['one_thing'] = "woo"
my_dict['second_thing'] = "wowie"

print(my_dict)
print(my_dict.keys())
print(my_dict.values())

print(my_dict['one_thing'])

my_dict['one_thing'] = "whoops!"

#what happens here?
print(my_dict['one_thing'])

#digression: most common reason I use dictionaries is to count things!

counts = {}

letters_in_my_name = ['r','a','c','h','e','l','e','l','i','s','a','b','e','t','h','s','h','o','r','e','y']

for l in letters_in_my_name:
    if l not in counts:
        counts[l] = 1
    else:
        counts[l] += 1

print(counts)

#IMPORTANT NOTE: You can't count on anything to be in any specific order in a dictionary, unlike a list.

#End digression.



import csv

with open('models.csv', 'r') as readfile:
    models = list(csv.DictReader(readfile, delimiter='\t'))

print(models)

for model in models:
    print(model)


#this thing that gets printed, it doesn't look quite
#the dictionary above, because it's a special kind of
#dictionary called an ordered dictionary that DOES promise
#a specific order, but for our purposes it acts like a dictionary.

#Let's look at the keys!
models[0].keys()