如何使用 python 成像库创建位图
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how can I use the python imaging library to create a bitmap
提问by R Doolabh
I have a 2d list in python, and I want to make a graphical pic of the data. Maybe a n by m column grid where each square is a different color of grey depending on the value in my 2d list.
我在 python 中有一个 2d 列表，我想制作数据的图形图片。也许是一个由 m 列的网格，其中每个方块都是不同的灰色，具体取决于我的 2d 列表中的值。
However, I can't seem to figure out how to create images using PIL. This is some of the stuff I've been messing with:
但是，我似乎无法弄清楚如何使用 PIL 创建图像。这是我一直在搞乱的一些东西：
def createImage():
img = Image.new('L', (100,100), 'white')
img.save('test.bmp')
for i in range(0,15):
for j in range(0,15):
img.putpixel((i,j), (255,255,255))
However, I'm getting an error saying that an integer is required (problem on the line with the putpixel)
但是，我收到一个错误，说需要一个整数（putpixel 的问题）
采纳答案by ghostbust555
This is from http://en.wikibooks.org/wiki/Python_Imaging_Library/Editing_Pixels:
这是来自http://en.wikibooks.org/wiki/Python_Imaging_Library/Editing_Pixels：
from PIL import Image
img = Image.new( 'RGB', (255,255), "black") # Create a new black image
pixels = img.load() # Create the pixel map
for i in range(img.size[0]): # For every pixel:
for j in range(img.size[1]):
pixels[i,j] = (i, j, 100) # Set the colour accordingly
img.show()
