Question

我是初学程序员，正在研究这段代码，为我的计算机科学GCSE练习。我正在使用此代码，

import random
file = open("OCR tunes1.csv","r")
temp = file.read()
file.close()

tempList = temp.split("\n")
print(tempList[1])

OCRtunes = []
for item in tempList:
    record = item.split(",")
    OCRtunes.append(record)
print(OCRtunes)
genreOptions = ["pop", "rock", "classical"]
limit = random.choice(genreOptions)
limit = '"' + limit + '"'
print(limit)

increasing = 0
options = []
while True:
    if OCRtunes[increasing][2] == limit:
        options.append(OCRtunes[increasing][0])
        increasing += 1
    else:
        increasing += 1
    if increasing == 20:
       False
print(options)

我得到了这个错误。

Traceback(most recent call last) :
  File "C:/Users/Jude/Documents/school/computer science/NEA/random playlist genre.py, line 23, in <module>
     if len(OCRtunes[increasing][[2]) == limit:
IndexError: list index out of range
>>>

如何删除错误？

Answer 1

要处理列表的每个元素，请使用for - 循环：

import random
import csv

genre_options = ["pop", "rock", "classical"]

with open("OCRtunes1.csv") as tunes:
    ocr_tunes = list(csv.reader(tunes))

limit = random.choice(genre_options)
options = []
for tune in ocr_tunes:
    if tune[2] == limit:
        options.append(tune[0])

如何纠正if语句中的错误并将其编入索引？

1 个答案: