我尝试导入和使用python pillow库,如下所示:
from urllib.request import urlopen
import PIL
from PIL import Image, ImageFont, ImageDraw
import re
image = Image.open(urlopen("http://randomurl.com/randomimage.jpg"))
draw = ImageDraw.Draw(image)
font = ImageFont.truetype("sans-serif.ttf", 16)
draw.text((0, 0),"This is the future liberals want",(255,255,255),font=font)
image.save('sample-out.jpg')
但是,我得到了以下错误:
/opt/bot/app # python cli.py
Retrieving column Image ID on worksheet History
Traceback (most recent call last):
File "cli.py", line 38, in <module>
font = ImageFont.truetype("sans-serif.ttf", 16)
File "/usr/local/lib/python3.7/site-packages/PIL/ImageFont.py", line 260, in truetype
return FreeTypeFont(font, size, index, encoding, layout_engine)
File "/usr/local/lib/python3.7/site-packages/PIL/ImageFont.py", line 135, in __init__
if core.HAVE_RAQM:
File "/usr/local/lib/python3.7/site-packages/PIL/ImageFont.py", line 39, in __getattr__
raise ImportError("The _imagingft C module is not installed")
ImportError: The _imagingft C module is not installed
我知道以前在StackOverflow上也有人问过类似的问题。但是,所有的答案似乎都是针对我没有针对的执行环境。我在python:3.7-rc-alpine3.7
docker映像中运行这个程序,现有的答案不起作用。下面是我安装的pip和apk包:http://dpaste.com/3EBW3A1
2条答案
按热度按时间fjnneemd1#
我们需要安装编译器(
g++
)、TrueType字体渲染库(freetype-dev
)和加速基线JPEG压缩和解压缩库(jpeg-dev
),以便在Alpine平台上编译pillow
。Dockerfile
的组成部分为:gg58donl2#
唉,不要用这些破Docker镜像了,一遍又一遍,用普通的
alpine:3.7
镜像,用apk
安装需要的包就行了,Pillow for Python 3由包py3-pillow
提供,Python 3由包python3
提供。