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CS50 Problem Set 6 - DNA Solution
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| from csv import reader, DictReader | |
| from sys import argv, exit | |
| sequences = {} | |
| #validate input | |
| if len(argv) < 3: | |
| print("Usage:", "python dna.py data.csv sequence.txt") | |
| exit(1); | |
| # get maximum number of STR sequence | |
| def get_max(dna, STR): | |
| i = 0 | |
| j = len(STR) | |
| max = 0; | |
| for x in range(len(dna)): | |
| if dna[i:j] == STR: | |
| temp = 0; | |
| while dna[i:j] == STR: | |
| temp += 1 | |
| i+= len(STR) | |
| j+= len(STR) | |
| if(temp > max): | |
| max = temp | |
| else: | |
| i+=1 | |
| j+=1 | |
| return max | |
| with open(argv[2], 'r') as dnafile: | |
| dna = dnafile.read() | |
| # open peopleFile to get sequence keyes | |
| with open(argv[1], "r") as peopleFile: | |
| peopleReader = reader(peopleFile) | |
| for row in peopleReader: | |
| header = row | |
| header.pop(0) | |
| for item in header: | |
| sequences[item] = 0; | |
| break | |
| # give sequence keys value from max function | |
| for key in sequences: | |
| ans = get_max(dna, key) | |
| sequences[key] = ans | |
| # print persons if found | |
| with open(argv[1], "r") as peopleFile: | |
| people = DictReader(peopleFile) | |
| for person in people: | |
| match = 0 | |
| for key in sequences: | |
| if int(person[key]) == sequences[key]: | |
| match += 1 | |
| if match == len(sequences): | |
| print(person["name"]) | |
| exit(0) | |
| print("No match") |
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