pillow

List of Image “modes”

由 安稳与你 提交于 2019-12-28 12:13:13
问题 Looking through PIL (and related to this question), where can I get a comprehensive list of Image modes? I see "RGB", "RGBX", my code has "BGRX" somehow even though it's not mentioned in the PIL docs that I can see. How can I see which is which, what PIL supports, and what proper modes to select when interacting with windows API calls, for example? Basically I know very little about image modes and would like to learn more than just what letters to put in to make it magically work. 回答1: There

PIL open() method not working with BytesIO

由 倾然丶 夕夏残阳落幕 提交于 2019-12-28 02:56:09
问题 For some reason, when I try to make an image from a BytesIO steam, it can't identify the image. Here is my code: from PIL import Image, ImageGrab from io import BytesIO i = ImageGrab.grab() i.resize((1280, 720)) output = BytesIO() i.save(output, format = "JPEG") output.flush() print(isinstance(Image.open(output), Image.Image)) And the stack trace of the error it throws: Traceback (most recent call last): File "C:/Users/Natecat/PycharmProjects/Python/test.py", line 9, in <module> print

一天入门 Python 的一些心得

由 拟墨画扇 提交于 2019-12-27 22:07:59
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 1. 前言 好久没写文了。最近在搞一些好玩的技术用到了 Python 。我原以为要花些时日，谁知道第一天入门之后便没有再刻意地去学习它了。这里就写写其中的一些关键点吧。如果我去学一门语言不是因为它火了而是我用到它了。曾经闲着没事干的时候把 Kotlin 、 Vue 、 React 学了，但是从来没有实践中用到它们，以至于现在几乎快要忘了。所以这是个惨痛的教训： 有可能用不到的东西不要去学 。有这个时间泡妞打游戏它不香吗？ 2. 为什么选择Python "玩蛇"其实我是拒绝的，我要搞个爬虫以及数据清洗，包括机器学习的一些东西。而这些方面 Python 具有先天性优势，所以 Python 成了不二的选择。从这里你需要知道当你要去学一个新技术时，你要知道它的优势是什么，它的场景是什么。有不少人去报个班学 Python ,当你问他为什么学 Python 的时候，他告诉你因为它火啊。这种是没有前途的。 3. 如何快速入门Python 这一篇是结合我个人的经历写的，所以想快速入门首先你要有编程的经历，掌握其它任何一门语言的前提下，有一定的学习能力， Python 对你来说是几乎没有难度的语言。 3.1 环境安装和包管理 Python 大部分人学习和使用直接去官方下对应的环境包安装就行了，当然这个也可以

Neither Pillow nor PIL could be imported: No module named Image

由 ℡╲_俬逩灬. 提交于 2019-12-25 16:22:30
问题 I am trying to use PIL/Pillow in my django app, running in virtualenv, for eventual deployment to Heroku. Steps I have done: started virtualenv (source venv/bin/activate) pip install pillow Output: clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard- error-in-future] clang: note: this will be a hard error (cannot be downgraded to a warning) in the future error: command 'cc' failed with exit status 1 otherwise, there were a lot of copied files: e.g. copying

Separate/reposition/translate shapes in image with pillow in python

由 左心房为你撑大大i 提交于 2019-12-25 14:26:51
问题 I need to separate or translate or replace pixels in an image with python so as to all the shapes to share the same distance between each other and the limits of the canvas. background is white, shapes are black. IMPORTANT: Images are dynamic, all images have bars at different positions, that means i need to detect where a bar starts and where a bar ends to draw the final image! This is an example INPUT image This is an example OUTPUT image I did this by hand, i don't know if all bars are

How to overlay images in python

由 不问归期 提交于 2019-12-25 09:27:41
问题 from PIL import Image import sys infile1 = Image.open(sys.argv[1]) infile2 = Image.open(sys.argv[2]) infile3 = Image.open(sys.argv[3]) infile4 = Image.open(sys.argv[4]) outfile1 = Image.new('1', infile1.size) outfile2 = Image.new('1', infile1.size) outfile3 = Image.new('1', infile1.size) for x in range(infile1.size[0]): for y in range(infile1.size[1]): outfile1.putpixel((x, y), max(infile1.getpixel((x, y)), infile2.getpixel((x, y)))) outfile2.putpixel((x, y), max(infile3.getpixel((x, y)),

Python Mutagen: add cover photo/album art by url?

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-25 07:09:31
问题 Using mutagen, I am able to add normal metatags such as title , artist , and genre however when I try to add an image via a url, it doesn't work. from mutagen.mp4 import MP4 from mutagen.mp4 import MP4Cover from PIL import Image import urllib2 as urllib import io, sys, getopt #url is defined elsewhere audio = MP4(url) #clear previous meta tags audio.delete() #get album picture data cover ="http://cont-sv5-2.pandora.com/images/public/amz/5/2/9/7/095115137925_500W_488H.jpg" fd = urllib.urlopen

Changing from PIL to PILLOW on a mac

由 可紊 提交于 2019-12-25 07:02:58
问题 I'm having trouble upgrading from PIL to PILLOW on my mac. I tried "brew install libtiff lbjpeg webp littlecms" but homebrew couldn't find the lbjpeg - any tips? 回答1: Reinstall X11 from XQuartz.org Install the latest XCode Install the command line tools: xcode-select --install Worked for me on mavericks 来源： https://stackoverflow.com/questions/21503147/changing-from-pil-to-pillow-on-a-mac

Why can't I install Pillow on my mac? It gives some errors

由 心不动则不痛 提交于 2019-12-25 01:58:01
问题 here is the error from installing Pillow. I'm using OS X Mavericks. I tried installing Pillow through pip install.. _imaging.c:391:28: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32] int temp = PyInt_AsLong(op); ~~~~ ^~~~~~~~~~~~~~~~ _imaging.c:397:28: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32] int temp = PyInt_AsLong(op); ~~~~ ^~~~~~~~~~~~~~~~ _imaging.c:407:28: warning: implicit conversion loses

Add multiple pages to new PDF using PIL/Pillow

由 橙三吉。 提交于 2019-12-24 12:41:37
问题 http://pillow.readthedocs.org/en/3.0.x/handbook/image-file-formats.html#pdf The Pillow docs mention being able to save multiple pages, but I can't find any other docs or code samples that tell you how to add pages to a new PDF. 回答1: You could try the following: im.save('test.pdf', save_all=True) By default, the output format is determined by the file extension. This is documented in the release notes. 回答2: Doesn't seem like this is currently possible with Pillow, I used reportlab to build a
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