python OrderedDict兩個鍵和多個值->寫入csv以導入到excel

Question

在Python中，我該如何將下面的對象寫入一個csv文件，以后可以手動將其導入Excel？

from collections import OrderedDict
import csv

data = OrderedDict([(('2016-11-01', 'USD'), ['ECB News', 'FED News']),
                    (('2016-11-02', 'EUR'), ['Brexit News']),
                    (('2016-11-03', 'USD'), ['Yellen Speaking'])])

with open('output.csv', 'wb') as output:
    writer = csv.writer(output)
    for each in data:
        for key, value in each.iteritems(): #<<<<<----- error here
            writer.writerow([key, value])

錯誤：

  for key, value in each.iteritems():
    AttributeError: 'tuple' object has no attribute 'iteritems'

想要的CSV輸出：

2016-11-01;USD;ECB News,FED News
2016-11-02;EUR;Brexit News
2016-11-03;USD;Yellen Speaking

Answer 1

each是data字典中的鍵，它正確地表示是一個元組。 您可能只是將iteritems()放在錯誤的位置：

from io import StringIO
with StringIO() as output:
    writer = csv.writer(output, delimiter=';')
    for k, v in data.iteritems():
        writer.writerow(list(k)+[','.join(v)])
    print(output.getvalue())

輸出：

2016-11-01;USD;ECB News,FED News
2016-11-02;EUR;Brexit News
2016-11-03;USD;Yellen Speaking

您可以替換：

    for k, v in data.iteritems():
        writer.writerow(list(k)+[','.join(v)])

與：

    writer.writerows(list(k)+[','.join(v)] for k, v in data.iteritems())