How to use Python regular expressions for Word file processing

Python regular expression is a powerful matching tool that can help us quickly identify and replace text, styles and formats in Word file processing. This article will introduce how to use Python regular expressions for Word file processing.

1. Install the Python-docx library

Python-docx is a functional library for processing Word documents in Python. You can use it to quickly read, modify, create and save Word documents. Before using Python-docx, you need to ensure that Python 2.x or 3.x has been installed. After installing Python, you can install Python-docx through the following command:

pip install python-docx

2. Open Word document

In Python, you need to use the Document class in the docx library to open a Word document. A Word document can be opened through the following code:

from docx import Document

document = Document("example.docx")

3. Use regular expressions to replace text

1. Replace text

Use regular expressions to replace text Quickly identify text that needs replacing and replace it with new content. For example, if we want to replace all "Python" in the document with "Java", we can use the following code:

import re

for paragraph in document.paragraphs:
    if re.search("Python", paragraph.text):
        paragraph.text = re.sub("Python", "Java", paragraph.text)

2. Replacement style

You can also use regular expressions Help us replace text styles. For example, if we want to replace all titles with bold and red fonts, we can use the following code:

for paragraph in document.paragraphs:
    if re.search("Chapter [0-9]", paragraph.text):
        paragraph.style.font.bold = True
        paragraph.style.font.color.rgb = RGBColor(255, 0, 0)

3. Replace pictures

Using Python regular expressions can help us Identify images in documents and replace them with new images. For example, if we want to replace all the pictures in the document with the same new picture, we can use the following code:

for i in range(len(document.inline_shapes)):
    document.inline_shapes[i].picture = Image.open("new_image.jpg")

4. Use regular expressions for format replacement

In a Word document, In addition to text and images, formatting is also an important thing to deal with. Using Python regular expressions can help us quickly identify styles and formats and replace them. For example, if we want to replace all paragraph formats in the document with "Title One", we can use the following code:

for paragraph in document.paragraphs:
    if re.search("Chapter [0-9]", paragraph.text):
        paragraph.style = document.styles["Heading 1"]

5. Save the Word document

After modifying the Word document, you need to use The save method saves it. For example, if we want to save the modified document as "new_document.docx", we can use the following code:

document.save("new_document.docx")

Through the above steps, we can use Python regular expressions to process Word files. Using the combination of Python-docx and regular expressions can greatly improve the efficiency of document processing and simplify repetitive work in the processing process.

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