csv.writer 中的分隔符创建额外的引号

Question

我在尝试通过 csv 写入器将数据导出到 Excel 文件时遇到问题。

当我尝试使用默认分隔符（逗号）导出它时，它会正确执行。这是带有默认分隔符的代码：

with open(file, 'w', encoding="utf-8", newline='') as csvfile:
            writer = csv.writer(csvfile, dialect='excel',quoting=csv.QUOTE_NONNUMERIC)

输出：

"ID","Title","Genre","Country" 
"A4321","Film1","Horror","USA"
"A4322","Film2","Romance","France"
"A4323","Film3","Comedy","Germany"
"A4324","Film4","Western","UK"

当我通过逗号分隔符将文本转换为 Excel 中的列时，它会在列中正确分隔。

但是，如果我尝试使用竖线 (|) 作为分隔符，输出会很奇怪，因为它会在文件中创建更多引号。这是代码，我只添加了分隔符的规范：

with open(m_file, 'w', encoding="utf-8", newline='') as csvfile:
            writer = csv.writer(csvfile, dialect='excel', delimiter ='|', quoting=csv.QUOTE_NONNUMERIC)

输出：

"ID"|"Title"|"Genre"|"Country" 
"A4321|""Film1""|""Horror""|""USA""
"A4322|""Film2""|"Romance""|"France""
"A4323|""Film3""|""Comedy""|""Germany""
"A4324|""Film4""|""Western""|""UK""

并且用竖线分隔符分隔在 Excel 上不起作用。

我尝试过更改引用，添加escapechars和doublequotes = False，但它不起作用

我应该改变什么吗？

Answer 1

无法重现：

import csv

m_file = "tata.csv"

data = [["A","a", 5], 
        ["B","b", 7], 
        ["C","c", 9], 
        
]
with open(m_file, 'w', encoding="utf-8", newline='') as csvfile:
    writer = csv.writer(csvfile, dialect='excel', delimiter ='|',
                        quoting=csv.QUOTE_NONNUMERIC)
    writer.writerows(data)

with open(m_file) as f:
    print(f.read())

文件内容：

"A"|"a"|5
"B"|"b"|7
"C"|"c"|9

将数据更改为

data = [["A","a", 5], 
        ["B","b", 7], 
        ['"C"','"c"', 9], 

导致

"A"|"a"|5        
"B"|"b"|7        
"""C"""|"""c"""|9

仍然不是你得到的。