Question

PYTHON. Create a function that accepts a filename where in each line there is a name of a type of bird. use a python dictionary in order to count the # of time each bird appears. (1 line = 1 appearance) Loop over your dict. to print each species and the # of times it was seen in the file once all lines have been counted. return dictionary containing count

the filename opens this:

blackbird

canary

hummingbird

canary

hummingbird

canary

example of outcome. Blackbird,1

Hummingbird,2

Canary,3

Answer 1

Here is the code in python.

filename = input("Enter filename: ")

# reading all lines from the file and adding to a list
with open(filename,'r') as f:
    all_lines = f.readlines()

for i in range(len(all_lines)):
    # removing \n from the end each line in the list
    all_lines[i] = all_lines[i].split("\n")[0]

# creating an empty dictionary
birdsCount = {}

# adding all birds to birdsCount if they are already not present
for bird in all_lines:
    if bird not in birdsCount:
        birdsCount[bird] = 0

# counting the occurence of each bird
for bird in all_lines:
    birdsCount[bird]+=1
# printing the name of each bird and its count
for bird in birdsCount:
    print("{},{}".format(bird,birdsCount[bird]))

I have added some comments to make you understand better

OUTPUT:

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