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---
name: docx-modify-existing-document
description: 'Sub-skill of docx: Modify Existing Document (+1).'
version: 1.1.0
category: data
type: reference
scripts_exempt: true
---
# Modify Existing Document (+1)
## Modify Existing Document
```python
from docx import Document
doc = Document("existing.docx")
# Replace text in paragraphs
for para in doc.paragraphs:
if "old text" in para.text:
for run in para.runs:
run.text = run.text.replace("old text", "new text")
doc.save("modified.docx")
```
## Add Content to Existing Document
```python
from docx import Document
doc = Document("existing.docx")
# Add new paragraph at end
doc.add_paragraph("New paragraph added.")
# Add new section
doc.add_page_break()
doc.add_heading("New Section", level=1)
doc.add_paragraph("Content for new section.")
doc.save("modified.docx")
```
