Question

诚然，此文件上的代码很丑陋，但它仍然可以正常工作，并已完成概述的任务。但是，检查程序发现错误。我将包括指向该链接。我的代码如下。关于为什么他们认为输出为空白的想法太棒了！

通过检查器：

"Expected Output:
[{'first': 'Luna', 'middle': None, 'last': 'Lovegood', 'house': 'Ravenclaw', 'birth': 1981}]
Actual Output:
[]"

https://submit.cs50.io/check50/10dd5ef79130cbd984475a9eaac72a8c3cf8f027

import sys
from sys import argv
from cs50 import SQL
import csv


# obtain file input
if len(sys.argv) != 2:
    print("Enter one CSV file")
    sys.exit(1)

# read file into reader
wizards = open(argv[1])
reader = csv.reader(wizards)

# create empty lists
fullnames = []
houses = []
yob = []
namecount = 0
# save name, houses and years from each row
for row in reader:
    if namecount > 0:
        fullnames.append(row[0])
        houses.append(row[1])
        yob.append(row[2])
    namecount += 1

# create empty lists
firstnames = []
middlenames = []
lastnames = []

# seperate names. couldve used .split() to do all this in hindsight
for x in range(namecount - 1):
    namelen = len(fullnames[x])
    tname = fullnames[x]
    spaces = 0
    # finds spaces in names using length
    for y in range(namelen - 1):
        if tname[y] == " ":
            spaces += 1

    nchars = 0
    # loops based on spaces and puts together names before and after spaces to save in respective name lists
    for s in range(spaces + 1):
        tempsn = tname[nchars]
        # adds chars to name until space, comma or end of full name reached
        while tname[nchars] != " " and tname != "," and nchars < namelen - 1:
            nchars += 1
            tempsn += tname[nchars]
        # saves temp names into lists
        if s == 0:
            firstnames.append(tempsn)
        elif s == 1 and spaces == 1:
            middlenames.append(None)
            lastnames.append(tempsn)
        elif s == 1 and spaces == 2:
            middlenames.append(tempsn)
        else:
            lastnames.append(tempsn)
        nchars += 1

# opens sql database
db = SQL("sqlite:///students.db")
# for each name, puts associated data into table using SQL query
for h in range(namecount - 1):
    db.execute("INSERT INTO students (first, middle, last, house, birth) VALUES (?, ?, ?, ?, ?)", 
                firstnames[h], middlenames[h], lastnames[h], houses[h], yob[h])

Answer 1

让我们加入我们的循环已经在进行中。我们在“哈利”中的“ y”上：

while tname[nchars] != " " and tname != "," and nchars < namelen - 1:
        nchars += 1
        tempsn += tname[nchars]

它将空格添加到tempsn。

您应该听您说：“ ＃个单独的名称。本来可以使用.split（）事后查看”

需要帮助来查找Pset 7所在的位置check50正在发现错误

1 个答案: