How can one use svg2rlg to convert a portion of an SVG image into a PNG with a specified percentage size?

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To use svg2rlg to convert a portion of an SVG image into a PNG with a specified percentage size, you can follow the steps below:

1. Install svglib, reportlab, and Pillow libraries using pip:

pip install svglib
pip install reportlab
pip install Pillow

1. Import the necessary modules:

from svglib.svglib import svg2rlg
from reportlab.graphics import renderPM
from PIL import Image

1. Load the SVG file using the svg2rlg method:

drawing = svg2rlg('input.svg')

1. Get the dimensions of the drawing using the getWidth() and getHeight() methods:

drawing_width = drawing.getWidth()
drawing_height = drawing.getHeight()

1. Define the portion of the drawing that you want to extract using the x, y, width, and height values:

x = 0
y = 0
width = int(drawing_width * 0.5) # 50% width
height = int(drawing_height * 0.5) # 50% height

1. Create a new drawing object containing only the desired portion of the SVG drawing:

portion_drawing = drawing[x:x+width, y:y+height]

1. Render the portion drawing to a PNG image using the renderPM method:

pm = renderPM.drawToPIL(portion_drawing)

1. Resize the image to the desired percentage size using the resize method of the PIL Image module:

percentage_size = 50 # 50%
resize_width = int(pm.width * percentage_size / 100)
resize_height = int(pm.height * percentage_size / 100)
pm = pm.resize((resize_width, resize_height))

1. Save the PNG image to a file using the save method of the PIL Image module:

pm.save('output.png')

This will create a PNG image containing the portion of the SVG image that you specified, resized to the desired percentage size.