如何在Python中向现有doc/docx文件添加新数据

Question

我刚开始学习Python，想用Python往一个已经存在的docx文件里添加新数据。

from docx import Document # for Word document 
document = Document()
document.add_paragraph('My first paragraph')
document.add_paragraph("Second paragraph")
document.add_paragraph("Third paragraph")
document.add_paragraph("fourth paragraph")
document.add_paragraph("fifth paragraph") 

document.save("testDocmod.docx")

document = Document('testDocmod.docx')
paragraphs = document.paragraphs
incr=1
for paragraph in paragraphs:
    runs = paragraph.runs
    for run in runs:
        if(incr == 2):
            run.text = 'Updatd text'
        print run.text
    incr = incr + 1

但是它只是在更新第二个元素，而我其实是想在第二个元素之前添加内容。

Answer 1

根据你想要的结果，你可以选择以下两种方法：
1) 删除第二段的所有内容，然后重新创建它：

from docx import Document
document = Document('testDocmod.docx')
paragraphs = document.paragraphs

#Store content of second paragraph
text = paragraphs[1].text

#Clear content
paragraphs[1]._p.clear()

#Recreate second paragraph
paragraphs[1].add_run('Appended part ' + text)
document.save("testDocmod.docx")

结果：

My first paragraph

Appended part Second paragraph

Third paragraph

fourth paragraph

fifth paragraph

2) 直接在第一段添加文字：

from docx import Document
from docx.enum.text import WD_BREAK

document = Document('testDocmod.docx')
paragraphs = document.paragraphs

#Add break line after last run
paragraphs[0].runs[-1].add_break(WD_BREAK.LINE)
paragraphs[0].add_run('New text')
document.save("testDocmod.docx")

结果：

My first paragraph
New text

Second paragraph

Third paragraph

fourth paragraph

fifth paragraph