Update a table in an existing PowerPoint deck with Python

Set one cell in an existing table

from wolfppt import Presentation

prs = Presentation("kpi_review.pptx")
table = next(s for s in prs.slides[0].shapes if s.has_table).table
table.cell(1, 1).text = "$4.2M"
prs.save("kpi_review_updated.pptx")

Row and column indexes start at zero, as in python-pptx. The same table object also exposes rows and columns collections with insert(index) and remove(index) for decks where the row count changes.

When to use WolfPPT and when to use python-pptx

• Use WolfPPT when the table lives in a deck your team already formats by hand and a script should update its values while every other part of the file keeps its original bytes.
• Use python-pptx when you create the table and the deck from code, or need a table API the WolfPPT facade does not list in its compatibility matrix.

Limitations

• Inserted rows and columns start with empty cell text.
• Deleting a row or column that crosses a merged cell, or the only remaining row or column, is refused.
• Mutation guards refuse unsafe edits instead of writing them.

Review the WolfPPT compatibility matrix

Install WolfPPT

The public WolfPPT release is MIT-licensed and free, including commercial use.

pip install wolfppt

PyPI wheels cover CPython 3.11 to 3.14 on Linux x86_64 and aarch64 and on macOS arm64. Source, tests, and the full facade reference live at github.com/wolfiesch/wolfppt-oss.

Related tasks

• Update text in an existing PowerPoint deck with Python
• Update a table in an existing PowerPoint deck with Python
• Update chart data in an existing PowerPoint deck with Python