pycairo

Intalling pycairo with Python 3.7 on Windows

由 一个人想着一个人 提交于 2021-02-11 09:58:10
问题 I'm trying to install pycairo, and in spite of what I found on the Internet, I don't manage to to it I did pip install pycairo, but it askek me to install Visual Basic Build Tool. I did it but it doesn't work then. I tried a lot of ideas found on the web (e.g. with this website https://www.lfd.uci.edu/~gohlke/pythonlibs/), but it also didn't work. When I try pip install pycairo, the error message is : Collecting pycairo Using cached https://files.pythonhosted.org/packages/48/20

Intalling pycairo with Python 3.7 on Windows

由 ＊爱你＆永不变心＊ 提交于 2021-02-11 09:57:27
问题 I'm trying to install pycairo, and in spite of what I found on the Internet, I don't manage to to it I did pip install pycairo, but it askek me to install Visual Basic Build Tool. I did it but it doesn't work then. I tried a lot of ideas found on the web (e.g. with this website https://www.lfd.uci.edu/~gohlke/pythonlibs/), but it also didn't work. When I try pip install pycairo, the error message is : Collecting pycairo Using cached https://files.pythonhosted.org/packages/48/20

Intalling pycairo with Python 3.7 on Windows

由 你。 提交于 2021-02-11 09:56:52
问题 I'm trying to install pycairo, and in spite of what I found on the Internet, I don't manage to to it I did pip install pycairo, but it askek me to install Visual Basic Build Tool. I did it but it doesn't work then. I tried a lot of ideas found on the web (e.g. with this website https://www.lfd.uci.edu/~gohlke/pythonlibs/), but it also didn't work. When I try pip install pycairo, the error message is : Collecting pycairo Using cached https://files.pythonhosted.org/packages/48/20

Intalling pycairo with Python 3.7 on Windows

由 巧了我就是萌 提交于 2021-02-11 09:56:03
问题 I'm trying to install pycairo, and in spite of what I found on the Internet, I don't manage to to it I did pip install pycairo, but it askek me to install Visual Basic Build Tool. I did it but it doesn't work then. I tried a lot of ideas found on the web (e.g. with this website https://www.lfd.uci.edu/~gohlke/pythonlibs/), but it also didn't work. When I try pip install pycairo, the error message is : Collecting pycairo Using cached https://files.pythonhosted.org/packages/48/20

Installing Cairo and PyCairo Mac OsX

由 狂风中的少年 提交于 2021-01-28 01:52:06
问题 I am playing around with using python iGraph for network visualization. I got his error message when I tried to plot a graph: >>> layout = g.layout("kk") >>> plot(g, layout = layout) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "build/bdist.macosx-10.5-x86_64/egg/igraph/drawing/__init__.py", line 446, in plot File "build/bdist.macosx-10.5-x86_64/egg/igraph/drawing/__init__.py", line 117, in __init__ File "build/bdist.macosx-10.5-x86_64/egg/igraph/drawing/utils

Python 十大图像处理工具

由 北城余情 提交于 2021-01-08 18:53:32
作者：Parul Pandey 编译：大数据文摘 本文主要介绍了一些简单易懂最常用的Python图像处理库 当今世界充满了各种数据，而图像是其中高的重要组成部分。然而，若想其有所应用，我们需要对这些图像进行处理。图像处理是分析和操纵数字图像的过程，旨在提高其质量或从中提取一些信息，然后将其用于某些方面。 图像处理中的常见任务包括显示图像，基本操作（如裁剪、翻转、旋转等），图像分割，分类和特征提取，图像恢复和图像识别等。Python之成为图像处理任务的最佳选择，是因为这一科学编程语言日益普及，并且其自身免费提供许多最先进的图像处理工具。 让我们看一下用于图像处理任务的一些常用Python库。 1. scikit Image scikit-image是一个基于numpy数组的开源Python包。 它实现了用于研究、教育和工业应用的算法和实用程序。 即使是对于那些刚接触Python的人，它也是一个相当简单的库。 此库代码质量非常高并已经过同行评审，是由一个活跃的志愿者社区编写的。 使用说明文档： https://scikit-image.org/docs/stable/user_guide.html 用法举例： 图像过滤、 模版匹配 可使用“skimage”来导入该库。大多数功能都能在子模块中找到。 import matplotlib.pyplot as plt %matplotlib

Module 'cairo' has no 'ImageSurface' member

由 孤人 提交于 2020-12-15 06:37:43
问题 When I am trying to execute this example, I am getting problem messages like: Module 'cairo' has no 'FORMAT_ARGB32' member Module 'cairo' has no 'ImageSurface' member Module 'cairo' has no 'Context' member Module 'cairo' has no 'LinearGradient' member What is the problem here? I am using python version '3.9.0' and pycairo version '1.20.0' 来源： https://stackoverflow.com/questions/64886845/module-cairo-has-no-imagesurface-member

django OSError: no library called “cairo” was found on windows

由 流过昼夜 提交于 2020-08-05 05:27:30
问题 When I run the Django server, I see this problem !! OSError: no library called "cairo" was found no library called "libcairo-2" was found cannot load library 'libcairo.so': error 0x7e cannot load library 'libcairo.2.dylib': error 0x cannot load library 'libcairo-2.dll': error 0x7e 回答1: WeasyPrint needs the Pango, cairo and GDK-PixBuf libraries. They are part of GTK+ (formerly known as GIMP Toolkit), and must be installed separately. After installing GTK+ libraries, do : python -m weasyprint

Cairo context and persistence?

由 时光怂恿深爱的人放手 提交于 2020-02-02 06:32:48
问题 I am just getting started using pycairo, and I ran into the following interesting error. The program I write creates a simple gtk window, draws a rectangle on it, and then has a callback to draw a random line on any kind of keyboard input. However, it seems that with each keyboard input, I have to create a new context, or I get an error at the moment the program receives first keyboard input (specifically, on the .stroke() line). Error is as follows, if it matters. 'BadDrawable (invalid

Cairo context and persistence?

由 不想你离开。 提交于 2020-02-02 06:32:43
问题 I am just getting started using pycairo, and I ran into the following interesting error. The program I write creates a simple gtk window, draws a rectangle on it, and then has a callback to draw a random line on any kind of keyboard input. However, it seems that with each keyboard input, I have to create a new context, or I get an error at the moment the program receives first keyboard input (specifically, on the .stroke() line). Error is as follows, if it matters. 'BadDrawable (invalid
订阅 pycairo