Automating PowerPoint Presentations with Python
PowerPoint presentations are commonly used for business reports, academic lectures, and data visualization. Python provides the python-pptx library to automate tasks like creating, editing, and formatting PowerPoint slides.
Installing Required Library
To work with PowerPoint files in Python, install the python-pptx library:
pip install python-pptx
python-pptx: Creates, edits, and formats PowerPoint presentations (.pptx).
Creating a New PowerPoint Presentation
Generating a Basic Presentation
from pptx import Presentation
# Create a new presentation
presentation = Presentation()
# Save the presentation
presentation.save("automated_presentation.pptx")
print("PowerPoint file created successfully.")
Adding Slides to a Presentation
from pptx import Presentation
# Create a new PowerPoint file
presentation = Presentation()
# Define slide layout (0 = Title Slide, 1 = Title and Content, etc.)
slide_layout = presentation.slide_layouts[1]
# Add a new slide
slide = presentation.slides.add_slide(slide_layout)
# Add title and content
slide.shapes.title.text = "Python PowerPoint Automation"
slide.placeholders[1].text = "Automate presentations using Python."
# Save the file
presentation.save("automated_presentation.pptx")
Adding Text, Images, and Tables
Adding Bulleted Lists
slide = presentation.slides.add_slide(presentation.slide_layouts[1])
title = slide.shapes.title
content = slide.placeholders[1]
title.text = "Benefits of PowerPoint Automation"
content.text = "• Saves time\n• Reduces manual errors\n• Improves productivity"
presentation.save("automated_presentation.pptx")
Adding an Image to a Slide
from pptx.util import Inches
slide = presentation.slides.add_slide(presentation.slide_layouts[5])
# Define image path
img_path = "image.png"
# Insert image
left = Inches(2)
top = Inches(2)
slide.shapes.add_picture(img_path, left, top, width=Inches(4), height=Inches(3))
presentation.save("automated_presentation.pptx")
Adding a Table to a Slide
slide = presentation.slides.add_slide(presentation.slide_layouts[5])
# Define table position and size
rows, cols = 3, 3
left, top, width, height = Inches(1), Inches(1), Inches(5), Inches(2)
table = slide.shapes.add_table(rows, cols, left, top, width, height).table
# Fill table with data
table.cell(0, 0).text = "Product"
table.cell(0, 1).text = "Price"
table.cell(0, 2).text = "Quantity"
table.cell(1, 0).text = "Laptop"
table.cell(1, 1).text = "$1200"
table.cell(1, 2).text = "5"
table.cell(2, 0).text = "Phone"
table.cell(2, 1).text = "$800"
table.cell(2, 2).text = "10"
presentation.save("automated_presentation.pptx")
Modifying and Formatting Slides
Changing Slide Background Color
from pptx.dml.color import RGBColor
slide = presentation.slides.add_slide(presentation.slide_layouts[5])
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = RGBColor(255, 0, 0) # Red background
presentation.save("automated_presentation.pptx")
Formatting Text (Font Size, Bold, Color)
from pptx.util import Pt
from pptx.dml.color import RGBColor
slide = presentation.slides.add_slide(presentation.slide_layouts[5])
text_box = slide.shapes.add_textbox(Inches(1), Inches(1), Inches(5), Inches(1))
text_frame = text_box.text_frame
paragraph = text_frame.add_paragraph()
paragraph.text = "Formatted Text Example"
# Apply font styles
paragraph.font.size = Pt(24)
paragraph.font.bold = True
paragraph.font.color.rgb = RGBColor(0, 0, 255) # Blue color
presentation.save("automated_presentation.pptx")
Extracting Content from PowerPoint Files
Reading Text from Slides
from pptx import Presentation
presentation = Presentation("automated_presentation.pptx")
for slide in presentation.slides:
for shape in slide.shapes:
if hasattr(shape, "text"):
print(shape.text)
Extracting Images from a PowerPoint File
import os
presentation = Presentation("automated_presentation.pptx")
for i, slide in enumerate(presentation.slides):
for j, shape in enumerate(slide.shapes):
if shape.shape_type == 13: # Picture type
image = shape.image
with open(f"extracted_image_{i}_{j}.png", "wb") as img_file:
img_file.write(image.blob)
Automating PowerPoint Reports
Generating a Presentation from Excel Data
import pandas as pd
from pptx import Presentation
# Load data from Excel
df = pd.read_excel("sales_data.xlsx")
# Create presentation
presentation = Presentation()
slide_layout = presentation.slide_layouts[1]
# Add a slide for each row in Excel
for _, row in df.iterrows():
slide = presentation.slides.add_slide(slide_layout)
slide.shapes.title.text = f"Product: {row['Product']}"
slide.placeholders[1].text = f"Sales: ${row['Sales']}"
presentation.save("sales_presentation.pptx")
Merging Multiple PowerPoint Presentations
from pptx import Presentation
ppt_files = ["file1.pptx", "file2.pptx"]
merged_presentation = Presentation()
for ppt_file in ppt_files:
presentation = Presentation(ppt_file)
for slide in presentation.slides:
merged_presentation.slides.add_slide(slide)
merged_presentation.save("merged_presentation.pptx")
Conclusion
This section covered automating PowerPoint tasks, including creating, modifying, formatting slides, adding text, images, and tables, and extracting content. These techniques are useful for generating reports, business presentations, and automated slide creation from data sources.
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