如何使用DictReader访问通用换行符模式下的原始csv内容？
如何使用DictReader访问通用换行符模式下的原始csv内容？
提问于 2022-04-26 08:15:00
我有这几行代码：
>>> import csv, io
>>> raw_csv = io.StringIO('one,two,three\r1,2,3\r,1,2,3')
>>> reader = csv.DictReader(raw_csv, delimiter=',')
>>> list(reader)这将导致错误：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File ".../lib/python3.9/csv.py", line 110, in __next__
self.fieldnames
File ".../lib/python3.9/csv.py", line 97, in fieldnames
self._fieldnames = next(self.reader)
_csv.Error: new-line character seen in unquoted field - do you need to open the file in universal-newline mode?我发现solutions与open()一起使用，但我不能使用它，因为没有文件路径。我还需要使用DictReader。
回答 1
Stack Overflow用户
回答已采纳
发布于 2022-04-26 08:32:06
您可以将newline=''传递给StringIO constructor以启用通用换行符模式：
>>> reader = csv.DictReader(StringIO(file), delimiter=',')
>>> next(reader)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.10/csv.py", line 110, in __next__
self.fieldnames
File "/usr/lib/python3.10/csv.py", line 97, in fieldnames
self._fieldnames = next(self.reader)
_csv.Error: new-line character seen in unquoted field - do you need to open the file in universal-newline mode?
>>> reader = csv.DictReader(StringIO(file, newline=''), delimiter=',')
>>> next(reader)
{'one': '1', 'two': '2', 'three': '3'}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/72010545
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