在Python中从元组（字符串）写入csv

Question

为了理解我目前的问题，这里有一些关于更广泛问题的背景信息：

我有一个由多个文档组成的大文本文件。我需要找到一种方法将这个文件组织成它的组成部分。不幸的是，所有单独的文件都有不同的格式，其中唯一的共同点是，每个文件的标题都包含日期，每次都以相同的格式书写：dd MONTH yyyy。我把日期当作书尾，把它们之间的文字隔开。你知道吗

#the date pattern with positive lookbehind
bookend_1 = "(?<=\d{1,2}\sJANUARY\s\d{4}|\d{1,2}\sFEBRUARY\s\d{4}|\d{1,2}\sMARCH\s\d{4}|\d{1,2}\sAPRIL\s\d{4}|\d{1,2}\sMAY\s\d{4}|\d{1,2}\sJUNE\s\d{4}|\d{1,2}\sJULY\s\d{4}|\d{1,2}\sAUGUST\s\d{4}|\d{1,2}\sSEPTEMBER\s\d{4}|\d{1,2}\sOCTOBER\s\d{4}|\d{1,2}\sNOVEMBER\s\d{4}|\d{1,2}\sDECEMBER\s\d)"

#The date pattern with positive lookahead
bookend_2 = "(?=\d{1,2}\sJANUARY\s\d{4}|\d{1,2}\sFEBRUARY\s\d{4}|\d{1,2}\sMARCH\s\d{4}|\d{1,2}\sAPRIL\s\d{4}|\d{1,2}\sMAY\s\d{4}|\d{1,2}\sJUNE\s\d{4}|\d{1,2}\sJULY\s\d{4}|\d{1,2}\sAUGUST\s\d{4}|\d{1,2}\sSEPTEMBER\s\d{4}|\d{1,2}\sOCTOBER\s\d{4}|\d{1,2}\sNOVEMBER\s\d{4}|\d{1,2}\sDECEMBER\s\d)"

#using the bookends to find the text in between dates
docs = regex.findall(bookend_1+'(.*?)'+ bookend_2, psc_comm_raw, re.DOTALL|re.MULTILINE) 

我使用正则表达式创建了两个列表：一个是所有日期，另一个是发生在日期之间的所有文本段落。我把这些列表压缩成一个元组。因为有些日期是重复的，所以我无法把它们编入字典。你知道吗

psc_comm_tuple = list(zip(date, docs))

这里有几行psc\u comm\u tuple。你知道吗

[('27 JULY 2004',
  ' ADDIS ABABA, ETHIOPIA\n\nPSC/PR/Comm.(XIII)\n\nCOMMUNIQUÉ\n\nPSC/PR/Comm.(XIII) Page l\n\nCOMMUNIQUÉ OF THE THIRTEENTH MEETING OF THE PEACE AND SECURITY COUNCIL\n\nThe Peace and Security Council (PSC) of the African Union (AU), at its thirteenth meeting, held on 27 July 2004, adopted the following communiqué on the crisis in the Darfur region of the Sudan:\n\nCouncil,\n\n1.\tReiterates its deep concern over the grave situation that still prevails in the Darfur region of the Sudan, in particular the continued attacks by the Janjaweed militia against the civilian population, as well as other human rights abuses and the humanitarian crisis;\n\n2.\tUnderlines the urgent need to implement decision AU/Dec.54(111) on Darfur, adopted by the 3rd Ordinary Session of the Assembly...'),
 ('29 JANUARY 2001',
  '\n\nThe Central Organ of the OAU Mechanism for Conflict Prevention, Management and Resolution held its seventy-third * ordinary session at the level of Ambassadors on 29 January 2001, in Addis Ababa. The session was chaired by Ambassador Kati Ohara Korga, Permanent Representative of Togo to the OAU.\n\nHaving considered the Report of the Secretary General on the Democratic Republic of the Congo (DRC) and the situation in that country, the Central Organ:\n\n1.\tstrongly condemns the assassination of Pre...'),
 ('20 MARCH 2001',
  "\n\nThe Central Organ of the OAU Mechanism for Conflict Prevention, Management and Resolution held its 74th ordinary session at ambassadorial level, in Addis Ababa, Ethiopia, on Tuesday March 20, 2001. The session was chaired by Ambassador Ohara Korga, Permanent representative of Togo to the OAU....'),
 ('22 AUGUST 2001',
  '\n\nThe Central Organ of the OAU Mechanism for Conflict Prevention, Management and Resolution held its 75th Ordinary Session at Ambassadorial level in Addis Ababa, Ethiopia, on Wednesday 22 August 2001....')...]

我的最终目标是创建一个包含两列的CSV：一列用于日期，另一列用于与该日期关联的文本体。你知道吗

import csv
import os

with open('psc_comm.csv','w') as out:
    csv_out=csv.writer(out)
    csv_out.writerow(['date','text'])
    for row in psc_comm_tuple:
        csv_out.writerow(row)

当我将元组输出写入csv时，有些行是完全正确的。但是，有些输出变得混乱——文本被分成看似随机的块，还有空行，一行行的句子片段。这类事件有数百起。当我回顾原始文档并找到相应的断句处时，我看不出文本本身有什么特别或独特之处。没有什么特别的人物。它只是纯文本。但是，它们看起来确实是特别长的文本部分，所以我想知道CSV文件中单个单元格可以包含多少信息是否有限制。你知道吗

我的问题是：为什么CSV输出在某些地方如此时髦，而在其他地方却不是？你能在每个单元格中输入多少文本有限制吗？你知道吗

Answer 1

您没有提供足够的信息来识别问题，但是Excel在读取带有嵌入换行符的CSV单元格时往往会遇到问题，因此我的第一个猜测是，这就是问题所在：您有一个带有嵌入换行符的CSV，它可能是以可逆的方式写入的，但是Excel没有正确解析。你知道吗

换句话说，您的CSV文件可能没有问题，只是读取到Excel的方式有问题。你不能说你是怎么确定有问题的。你知道吗

如果你的目标是生成Excel可以读取的内容，我会放弃CSV格式，直接使用电子表格。模块^{}可以生成xlsx文档，效果非常好。你知道吗