python - CSV 阅读器在前几个字符中捡垃圾

Question

我正在尝试读取 CSV 文件的第一行并将其分配给 header . CSV 文件如下所示:

TIME,DAY,MONTH,YEAR
"3:21","23","FEB","2018"
"3:23","23","FEB","2018"
...

这是代码:

import csv

with open("20180223.csv") as csvfile:
    rdr = csv.reader(csvfile)
    header = next(rdr)
    print(header)

我希望输出看起来像:

['TIME', 'DAY', 'MONTH', 'YEAR']

但是输出如下所示:

['TIME', 'DAY', 'MONTH', 'YEAR']

我错过了什么？

Answer 1

第一个字符是 Byte order mark特点。

尝试这个:

with open("20180223.csv", encoding="utf-8-sig") as csvfile:

这个建议有点隐藏在 documentation 中。 ，但它在那里:

In some areas, it is also convention to use a “BOM” at the start of UTF-8 encoded files; the name is misleading since UTF-8 is not byte-order dependent. The mark simply announces that the file is encoded in UTF-8. Use the ‘utf-8-sig’ codec to automatically skip the mark if present for reading such files.