thumbnail()函数是Python Wand ImageMagick库中的内置函数，用于制作给定图像的缩略图。
用法：
thumbnail(width, height)
参数：此函数接受上述和以下定义的四个参数：
- width:此参数存储缩略图的宽度。
- height:此参数存储缩略图的高度。
返回值：此函数返回Wand ImageMagick对象。
原始图片：
范例1：
# Import library from Image
from wand.image import Image
# Import the image
with Image(filename ='../geeksforgeeks.png') as image:
# Clone the image in order to process
with image.clone() as thumbnail:
# Invoke thumbnail function with x as 50 and y as 50
thumbnail.thumbnail(50, 50)
# Save the image
thumbnail.save(filename ='thumbnail1.jpg')输出：
范例2：
# Import libraries from the wand
from wand.image import Image
from wand.drawing import Drawing
from wand.color import Color
with Drawing() as draw:
# Set Stroke color the circle to black
draw.stroke_color = Color('black')
# Set Width of the circlw to 2
draw.stroke_width = 1
# Set the fill color to 'White (# FFFFFF)'
draw.fill_color = Color('white')
# Invoke Circle function with center at 50, 50 and radius 25
draw.circle((200, 200), # Center point
(100, 100)) # Perimeter point
# Set the font style
draw.font = '../Helvetica.ttf'
# Set the font size
draw.font_size = 30
with Image(width = 400, height = 400, background = Color('# 45ff33')) as pic:
# Set the text and its location
draw.text(int(pic.width / 3), int(pic.height / 2), 'GeeksForGeeks !')
# Draw the picture
draw(pic)
# Invoke thumbnail function with x as 50 and y as 50
pic.thumbnail(50, 50)
# Save the image
pic.save(filename ='thumbnail2.jpg')输出：
注：本文由纯净天空筛选整理自 Wand thumbnail() function – Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。