在 scrapy csv 文件中保留前导零

Question

I need to preserve the leading zeros while exporting zip codes to the csv file in scrapy. I have the following exporter to implement but it didn't help me.

import csv

from scrapy.exporters import CsvItemExporter


class QuoteAllDialect(csv.excel):
    quoting = csv.QUOTE_ALL


class QuoteAllCsvItemExporter(CsvItemExporter):

    def __init__(self, *args, **kwargs):
        kwargs.update({'dialect': QuoteAllDialect})
        super(QuoteAllCsvItemExporter, self).__init__(*args, **kwargs)

I extract zip codes in the following way. In this way they are never treated as integers:

addr = response.xpath('//address/span/text()').extract()

full_ad = ", ".join(addr)

zip_code = full_ad[-5:]

I need help in finding out the way to implement so that scrapy handles it automatically. Any help would be appreciated. Thanks

Answer 1

I need to preserve the leading zeros while exporting zip codes

It sounds like you are treating zip codes as integers. Don't do that; just treat them as strings. They have no integer meaning (you can't do any reasonable arithmetic on them), so don't interpret them as integers.

Then you won't have to worry about preserving any formatting.