Question

我正在尝试将列表写入csv文件，以便每行有x个值（值的数量是x的倍数）。我一直在寻找一个解决方案，我已经找到了很多方法来解决这个问题，但我似乎无法让代码完成我想要的工作。

这是我的假设例子...... 我试图压缩列表，这是一个列表列表，试图让它每行写入2个值。没有用;这就是发生的事情......

我希望.txt文件中的列表看起来像这样：

Chocolates,3
Novels,14
Pens,4
Smiles,78

但在我的编码中，它看起来像这样......

record1 = ['Chocolates', '3', 'Novels', '14', 'Pens', '4', 'Smiles', '78']

我用它来拉链：

records = [record1[i:i+2] for i in range(0, len(record1), 2)]

prize = open("box.txt","w")
writer = csv.writer(prize)
writer.writerow(records)

但是，它在txt文件中看起来像这样

"['Chocolates', '3']","['4', '14']","['Pens', '4']","['Smiles', '78']"

我还尝试以不同的方式将列表写入文件...

prize = open("box.txt","w")
writer = csv.writer(prize)
for record in records:
    writer.writerow(records)
prize.close()

但看起来像这样：

"['Chocolates', '3']","['hiii', '14']","['Pens', '4']","['Smiles', '78']"
"['Chocolates', '3']","['hiii', '14']","['Pens', '4']","['Smiles', '78']"
"['Chocolates', '3']","['hiii', '14']","['Pens', '4']","['Smiles', '78']"
"['Chocolates', '3']","['hiii', '14']","['Pens', '4']","['Smiles', '78']"

我不知道我是在正确的轨道上，还是我的方法是正确的。我认为外观取决于列表的外观，但是，我开始相信这取决于我将其写入文件的方式。

感谢您的阅读。希望我的解释很清楚，如果不是，那就很抱歉。

Answer 1

在第一种情况下，您应该使用writerows()，而不是writerow()：

writer.writerows(records)

在第二种情况下应该是：

for record in records:
    writer.writerow(record)    # record, not records

<强>演示

尝试将其粘贴到Python shell中：

import csv

record1 = ['Chocolates', '3', 'Novels', '14', 'Pens', '4', 'Smiles', '78']
records = [record1[i:i+2] for i in range(0, len(record1), 2)]

with open("box.txt", "w") as prize:
    writer = csv.writer(prize)
    writer.writerows(records)

运行此代码后box.txt包含：

Chocolates,3
Novels,14
Pens,4
Smiles,78

Answer 2

你调用了错误的方法。必须是：

prize = open("box.csv","w")
writer = csv.writer(prize)
writer.writerows(records)

Answer 3

我希望你喜欢这个。

import csv


record1 = ['Chocolates', '3', 'Novels', '14', 'Pens', '4', 'Smiles', '78']
with open('box.csv', 'wb') as csvfile:
    writer = csv.writer(csvfile)
    for item, count in zip(record1[::2], record1[1::2]):
        writer.writerow([item, count])

参考：https://docs.python.org/2/library/csv.html#csv.writer

将x个值写入txt文件

3 个答案: