CS50 PSET6-DNA-在SMALL上工作正常，但在大型数据库上工作不正常

问题描述

我正在使用CS50并卡在该pset6上。

我编写了这段代码，对于“小型”给定的数据库，它可以正常工作。在“大”位上，我的DNA序列值错误。就像使用debug50一样，我得出Albus序列应该为15,49,38 ...而我的seq为21、55、64 ...

怎么了？以及为什么它在小型数据库而不是大型数据库上可以正常工作？

感谢您的帮助！

# Import ARGV and CSV library
from sys import argv,exit
import pandas as pd
import csv

# Check if argv has 3 arguments (program name,cvs file and dna sequence)
while True:
    if len(argv) != 3:
        print("Usage: python dna.py data.csv sequence.txt")
        exit(1)
    else:
        break

with open(argv[2],'r',encoding="UTF-8") as txt:
    dna_seq = txt.read()
#Find the number of STR - AGATC,TTTTTTCT,AATG,TCTAG,GATA,TATC,GAAA,TCTG
AGATC = dna_seq.count("AGATC")
TTTTTTCT = dna_seq.count("TTTTTTCT")
AATG = dna_seq.count("AATG")
TCTAG = dna_seq.count("TCTAG")
GATA = dna_seq.count("GATA")
TATC = dna_seq.count("TATC")
GAAA = dna_seq.count("GAAA")
TCTG = dna_seq.count("TCTG")

name = 0
if argv[1] == "databases/small.csv":

    with open(argv[1],'r') as csv_file:
        reader = csv.DictReader(csv_file)
        for row in reader:
            dna_db = row['name'],row['AGATC'],row['AATG'],row['TATC']
            dna_db = list(dna_db)

            seq = [AGATC,TATC]
            seq = [str(x) for x in seq]

            if dna_db[1:4] == seq:
                name = dna_db[:1]
                break
            else:
                name = "No match"

elif argv[1] == "databases/large.csv":

    with open(argv[1],row['TTTTTTCT'],row['TCTAG'],row['GATA'],row['TATC'],row['GAAA'],row['TCTG']
            dna_db = list(dna_db)

            seq = [AGATC,TCTG]
            seq = [str(x) for x in seq]

            if dna_db[1:9] == seq:
                name = dna_db[:1]
                break
            else:
                name = "No match"

print(name)

解决方法

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cs50 dna-sequence python