读取csv标头空白且不区分大小写 [英] Reading csv header white space and case insensitive

问题描述

是否可以读取CSV文件空白的标题并且不区分大小写?现在，我像这样使用csv.dictreader:

Is there a possibility to read the header of a CSV file white space and case insensitive? As for now I use csv.dictreader like this:

import csv
csvDict = csv.DictReader(open('csv-file.csv', 'rU'))

# determine column_A name
if 'column_A' in csvDict.fieldnames:
    column_A = 'column_A'
elif ' column_A' in csvDict.fieldnames:
    # extra space
    column_A = ' column_A'
elif 'Column_A' in csvDict.fieldnames:
    # capital A
    column_A = 'Column_A'

# get column_A data
for lineDict in csvDict:
    print(lineDict[column_A])

从代码中可以看到，我的csv文件有时在多余的空格或大写字母方面有所不同，例如

As you can see from the code, my csv files sometimes differ in extra white space or capital letters, for example

• "column_A"
• "column_A"
• "Column_A"
• "Column_A"
• ...

我想使用这样的东西:

    column_A = ' Column_A'.strip().lower()
    print(lineDict[column_A])

有什么想法吗?

推荐答案

如何覆盖DictReader.fieldnames属性?

class MyDictReader(DictReader):

    @property
    def fieldnames(self):
        return [field.strip().lower() for field in super(MyDictReader, self).fieldnames]

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