Modifying the font in a Word document can significantly impact its visual appearance and overall readability. Whether you want to enhance the document's style or align it with specific formatting requirements, changing the font is a straightforward process that allows you to customize your text. In this article, you will learn how to change font of a paragraph or a piece of text in a Word document in Python using Spire.Doc for Python.
Install Spire.Doc for Python
This scenario requires Spire.Doc for Python and plum-dispatch v1.7.4. They can be easily installed in your Windows through the following pip command.
pip install Spire.Doc
If you are unsure how to install, please refer to this tutorial: How to Install Spire.Doc for Python on Windows
Change the Font of a Paragraph in Python
Using Spire.Doc for Python, you can create a ParagraphStyle object which defines the font information that can be applied to a certain paragraph. The following are the steps to change the font of a paragraph.
- Create a Document instance.
- Load a Word document using Document.LoadFromFile() method.
- Get a specified section through Document.Sections[index] property.
- Get a specified paragraph that you want to change the font through Section.Paragraphs[index] property.
- Create a ParagraphStyle instance, specifying the font name, font color and font style through the properties under it.
- Add the style to the document using Document.Styles.Add() method.
- Apply the style to the paragraph using Paragraph.ApplyStyle() method.
- Save the result document using Document.SaveToFile() method.
- Python
from spire.doc import *
from spire.doc.common import *
# Create a Document instance
document = Document()
# Load a Word document
document.LoadFromFile('C:/Users/Administrator/Desktop/input.docx')
# Get the first section
section = document.Sections[0]
# Get a specific paragraph
paragraph = section.Paragraphs[2]
# Create a paragraph style
style = ParagraphStyle(document)
style.Name = 'NewStyle'
style.CharacterFormat.Bold = True
style.CharacterFormat.Italic = True
style.CharacterFormat.TextColor = Color.get_Red()
style.CharacterFormat.FontName = 'Cambria'
document.Styles.Add(style)
# Apply the style to the paragraph
paragraph.ApplyStyle(style.Name)
# Save the result document
document.SaveToFile('output/ChangeFontOfParagraph.docx', FileFormat.Docx)
Change the Font of Specific Text in Python
To change the font of specific text (letter, phrase or sentence) in a Word document, you need first to find the text from the document and then set a different color or font style for it. The following are the detailed steps.
- Create a Document instance.
- Load a Word document using Document.LoadFromFile() method.
- Find the text that you want to change font color using Document.FindAllString() method.
- Loop through all occurrences of the searched text and change the font color or style for each occurrence through the properties under TextSelection.GetAsOneRange().CharacterFormat object.
- Save the result document using Document.SaveToFile() method.
- Python
from spire.doc import *
from spire.doc.common import *
# Create a Document instance
document = Document()
# Load a Word document
document.LoadFromFile('C:/Users/Administrator/Desktop/input.docx')
# Find the text that you want to change font
textSelections = document.FindAllString('programming language', False, True)
# Change the font style of the text
for selection in textSelections:
selection.GetAsOneRange().CharacterFormat.TextColor = Color.get_Red()
selection.GetAsOneRange().CharacterFormat.Bold = True
# Save the result document
document.SaveToFile('output/ChangeFontOfText.docx', FileFormat.Docx)
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