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我需要一些帮助来找到一个教程或示例，以获取列表理解并将其与来自csv的数据文件进行合并，并将所有这些转换为xml文件。从阅读各种Python书籍& pdfs像ditp，IYOCGwP，learnpythonthe hardway ,, lxml tut，认为python和在线搜索我大部分的方式在那里，所以我认为。我只需要推动将所有东西捆绑在一起。我基本上采取了一个excel电子表格，我将其导出为csv文件。 csv包含我需要映射到xml文件的记录行。我对Python很陌生，以为我会用我的小项目来学习这门语言。列出的代码并不漂亮，但有效。我可以读取一个csv文件并将其转储到列表中。我可以合并3个列表并输出结果列表，我可以让我的程序吐出一个几乎按我需要的格式布置的骨架xml。我将列出一个小样本的实际输出，以及我正在尝试使用此代码下面的xml完成的内容。对不起，如果这太冗长了，这是我的第一篇文章。如何将python列表理解转换为xml
import csv, datetime, os
from lxml import etree
from ElementTree_pretty import prettify
f = os.path.getsize("SO.csv")
fh = "SO.csv"
rh = open(fh, "rU")
rows = 0
try:
rlist = csv.reader(rh)
reports = []
for row in rlist:
'''print row.items()'''
rowStripped = [x.strip(' ') for x in row]
reports.append(rowStripped)
rows +=1
except csv.Error, e:
sys.exit('file %s, line %d: %s' % (filename, reader.line_num, e))
finally:
rh.close()
root = etree.Element("co_ehs")
object = etree.SubElement(root, "object")
event = etree.SubElement(object, "event")
facets = etree.SubElement(event, "facets")
categories = etree.SubElement(facets, "categories")
instance = etree.SubElement(categories, "instance")
property = etree.SubElement(instance, "property")
facets = ['header','header','header','header','informational','header','informational']
categories = ['processing','processing','processing','processing','short_title','file_num','short_narrative']
property = ['REPORT ID','NEXT REPORT ID','initial-event-date','number','title','summary-docket-num','description-story']
print('----------Printing Reports from CSV Data----------')
print reports
print('---------END OF CSV DATA-------------')
print
mappings = zip(facets, categories, property)
print('----------Printing Mappings from the zip of facets, categories, property ----------')
print mappings
print('---------END OF List Comprehension-------------')
print
print('----------Printing the xml skeleton that will contain the mappings and the csv data ----------')
print(etree.tostring(root, xml_declaration=True, encoding='UTF-8', pretty_print=True))
print('---------END OF XML Skeleton-------------')
----My OUTPUT---
----------Printing Reports from CSV Data----------
[['1', '12-Dec-04', 'Vehicle Collision', '786689', 'No fault collision due to ice', '-1', '545671'], ['3', '15-Dec-04', 'OJT Injury', '87362', 'Paint fumes combusted causing 2nd degree burns', '4', '588456'], ['4', '17-Dec-04', 'OJT Injury', '87362', 'Paint fumes combusted causing 2nd degree burns', '-1', '58871'], ['1000', '12-Nov-05', 'Back Injury', '9854231', 'Lifting without a support device', '-1', '545671'], ['55555', '12-Jan-06', 'Foot Injury', '7936547', 'Office injury - heavy item dropped on foot', '-1', '545671']]
---------END OF CSV DATA-------------
----------Printing Mappings from the zip of facets, categories, property ----------
[('header', 'processing', 'REPORT ID'), ('header', 'processing', 'NEXT REPORT ID'), ('header', 'processing', 'initial-event-date'), ('header', 'processing', 'number'), ('informational', 'short_title', 'title'), ('header', 'file_num', 'summary-docket-num'), ('informational', 'short_narrative', 'description-story')]
---------END OF List Comprehension-------------
----------Printing the xml skeleton that will contain the mappings and the csv data ----------
<?xml version='1.0' encoding='UTF-8'?>
<co_ehs>
<object>
<event>
<facets>
<categories>
<instance>
<property/>
</instance>
</categories>
</facets>
</event>
</object>
</co_ehs>
---------END OF XML Skeleton-------------
----------CSV DATA------------------
C_ID,NEXT_C_ID,C_DATE,C_NUMBER,C_EVENT,C_DOCKETNUM,C_DESCRIPTION
1,-1,12-Dec-04,545671,Vehicle Collision,786689,"No fault collision due to ice"
3,4,15-Dec-04,588456,OJT Injury,87362,"Paint fumes combusted causing 2nd degree burns"
4,-1,17-Dec-04,58871,OJT Injury,87362,"Paint fumes combusted causing 2nd degree burns"
1000,-1,12-Nov-05,545671,Back Injury,9854231,"Lifting without a support device"
55555,-1,12-Jan-06,545671,Foot Injury,7936547,"Office injury - heavy item dropped on foot"
-----------What I want the xml output to look like----------------------
<?xml version="1.0" encoding="UTF-8"?>
<co_ehs xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="co_ehs.xsd">
<object id="3" object-type="ehs_report">
<event event-tag="0">
<facets name="header">
<categories name="processing">
<instance instance-tag="0">
<property name="REPORT ID" value="1"/>
<property name="NEXT REPORT ID" value="-1"/>
<property name="initial-event-date" value="12-Dec-04"/>
<property name="number" value="545671"/>
</instance>
</categories>
</facets>
<facets name="informational">
<categories name="short_title">
<instance-tag="0">
<property name="title" value="Vehicle Collision"/>
</instance>
</categories>
</facets>
<facets name="header">
<categories name="file_num">
<instance-tag="0">
<property name="summary-docket-num" value="786689"/>
</instance>
</categories>
</facets>
<facets name="informational">
<categories name="short_narrative">
<instance-tag="0">
<property name="description-story" value="No fault collision due to ice"/>
</instance>
</categories>
</facets>
</event>
</object>
</co_ehs>
什么是对象的id属性和事件的事件标签属性规则的左侧最好的答案？我认为事件标记只是一个计数器？ – 2011-02-22 18:27:44
@ ocaso-protal对象的id属性是我理解的那个记录的唯一id或整数。该对象类型的下一个记录将等于或大于4.我相信事件标记以相似的方式使用，当它插入rdms时，为每个事件标记赋予一个唯一的标识。我一直负责将csv文件和序列化到符合模式的xml中，以便最终xml将被馈送到rdms中。我想知道如何遍历映射并在生成整个xml文档之前将每个映射插入树中。 – MWR 2011-02-23 13:12:53
@ ocaso-protal我将csv从字典转换为列表，因此我的目标是遍历每个映射并生成相应的标记，并遍历整个列表，即所有csv数据并将适当的数据项插入到标签。每个数据项都有一个构面，类别，实例标签和属性。 – MWR 2011-02-23 13:29:30