Text-Replace in docx and save the changed file with python-docx

As it seems to be, Docx for Python is not meant to store a full Docx with images, headers, ... , but only contains the inner content of the document. So there's no simple way to do this.

Howewer, here is how you could do it:

First, have a look at the docx tag wiki:

It explains how the docx file can be unzipped: Here's how a typical file looks like:

+--docProps
|  +  app.xml
|  \  core.xml
+  res.log
+--word //this folder contains most of the files that control the content of the document
|  +  document.xml //Is the actual content of the document
|  +  endnotes.xml
|  +  fontTable.xml
|  +  footer1.xml //Containst the elements in the footer of the document
|  +  footnotes.xml
|  +--media //This folder contains all images embedded in the word
|  |  \  image1.jpeg
|  +  settings.xml
|  +  styles.xml
|  +  stylesWithEffects.xml
|  +--theme
|  |  \  theme1.xml
|  +  webSettings.xml
|  \--_rels
|     \  document.xml.rels //this document tells word where the images are situated
+  [Content_Types].xml
\--_rels
   \  .rels

Docx only gets one part of the document, in the method opendocx

def opendocx(file):
    '''Open a docx file, return a document XML tree'''
    mydoc = zipfile.ZipFile(file)
    xmlcontent = mydoc.read('word/document.xml')
    document = etree.fromstring(xmlcontent)
    return document

It only gets the document.xml file.

What I recommend you to do is:

1. get the content of the document with **opendocx*
2. Replace the document.xml with the advReplace method
3. Open the docx as a zip, and replace the document.xml content's by the new xml content.
4. Close and output the zipped file (renaming it to output.docx)

If you have node.js installed, be informed that I have worked on DocxGenJS which is templating engine for docx documents, the library is in active development and will be released soon as a node module.

this worked for me:

def docx_replace(old_file,new_file,rep):
    zin = zipfile.ZipFile (old_file, 'r')
    zout = zipfile.ZipFile (new_file, 'w')
    for item in zin.infolist():
        buffer = zin.read(item.filename)
        if (item.filename == 'word/document.xml'):
            res = buffer.decode("utf-8")
            for r in rep:
                res = res.replace(r,rep[r])
            buffer = res.encode("utf-8")
        zout.writestr(item, buffer)
    zout.close()
    zin.close()