Question

我有一个包含许多行的文件：

1,50,"asasd",25
2,51,"apa,asdfi",26
.....
.....

如何用逗号分隔第二行，跳过双引号内字符串内的逗号？

我需要第二行的结果为：

[2,51,"apa,asdfi",26]

目前我正在尝试：

x = line.split(',')

结果如下：

['2','51','"apa','asdfi"','26']

Answer 1

如评论中所述，尝试将您的文件读作.csv，它会对字符串中的昏迷做得很好。如果您在使用它时遇到问题，可以阅读文档https://docs.python.org/2/library/csv.html orsee中的一些示例https://dzone.com/articles/python-101-reading-and-writing

import csv

with open(file.csv,'r') as f:
    spamreader = csv.reader(f,delimiter=",")
    for row in spamreader:
        # a row is a list containing all elements in a line
        print row

结果：

['1','50','"asasd"','25']  
['2','51','"apa,asdfi"','26']

Answer 2

您可以尝试以下代码：

line = '2,51,"apa,asdfi",26'
result = line.split(",")

length = len(result)
for i in range(length):
    if '"' in result[i]:
        result[i] += "," + result[i+1]
        result.remove(result[i+1])
        break

length = len(result)
for i in range(length):
    if result[i].isdigit():
        result[i] = int(result[i])

print(result)

<强>输出：

[2, 51, '"apa,asdfi"', 26]

Answer 3

您也可以使用re.findall

提取它们

>>> s = '2,51,"apa,asdfi",26'
>>> 
>>> re.findall(r'(\d+|".*")', s)
['2', '51', '"apa,asdfi"', '26']

虽然我推荐dup

中提到的方法

如何在逗号上拆分一行，忽略引号内的逗号？

3 个答案: