cython

Determine whether a Python function is already implemented in C extension

由 回眸只為那壹抹淺笑 提交于 2020-12-10 04:39:52
问题 Suppose I have a Python program that runs slow- after profiliing and I have identified the bottleneck. One particular function from a 3rd party module I imported is particularly slow. For this particular case, I know that function is implemented in Python (Used Eclipse and it's easy to jump to the function definition). So I know that I can convert that function into Cython as a speed-up option. (If it is already implemented in C, there is no point in writing it in Cython...). If I don't have

Determine whether a Python function is already implemented in C extension

由 血红的双手。 提交于 2020-12-10 04:37:24
问题 Suppose I have a Python program that runs slow- after profiliing and I have identified the bottleneck. One particular function from a 3rd party module I imported is particularly slow. For this particular case, I know that function is implemented in Python (Used Eclipse and it's easy to jump to the function definition). So I know that I can convert that function into Cython as a speed-up option. (If it is already implemented in C, there is no point in writing it in Cython...). If I don't have

如何保护你的 Python 代码 （一）—— 现有加密方案

由 倖福魔咒の 提交于 2020-12-09 18:35:58
0 前言 去年11月在PyCon China 2018 杭州站分享了 Python 源码加密 ，讲述了如何通过修改 Python 解释器达到加解密 Python 代码的目的。然而因为笔者拖延症发作，一直没有及时整理成文字版，现在终于战胜了它，才有了本文。 本系列将首先介绍下现有源码加密方案的思路、方法、优点与不足，进而介绍如何通过定制 Python 解释器来达到更好地加解密源码的目的。 由于 Python 的动态特性和开源特点，导致 Python 代码很难做到很好的加密。社区中的一些声音认为这样的限制是事实，应该通过法律手段而不是加密源码达到商业保护的目的；而还有一些声音则是不论如何都希望能有一种手段来加密。于是乎，人们想出了各种或加密、或混淆的方案，借此来达到保护源码的目的。 常见的源码保护手段有如下几种： 发行 .pyc 文件 代码混淆 使用 py2exe 使用 Cython 下面来简单说说这些方案。 1 发行 .pyc 文件 1.1 思路 大家都知道，Python 解释器在执行代码的过程中会首先生成 .pyc 文件，然后解释执行 .pyc 文件中的内容。当然了，Python 解释器也能够直接执行 .pyc 文件。而 .pyc 文件是二进制文件，无法直接看出源码内容。如果发行代码到客户环境时都是 .pyc 而非 .py 文件的话，那岂不是能达到保护 Python 代码的目的？

How to install cython an Anaconda 64 bits with Windows 10?

由 ￣綄美尐妖づ 提交于 2020-12-03 07:35:48
问题 It's all in the title, does someone have a step by step method to install cython and run it on Anaconda 64 bits on Windows 10? I search for hours and there are a lot of tutorials... For things that I wasn't able to get or do on windows 10. I try to follow all those methods and more but in vain for now: https://www.ibm.com/developerworks/community/blogs/jfp/entry/Installing_Cython_On_Anaconda_On_Windows?lang=en https://github.com/cython/cython/wiki/CythonExtensionsOnWindows Conda install is

How to get path of the pyd file aka equivalent of __file__

由 戏子无情 提交于 2020-11-29 10:50:14
问题 I have a file package.py that i am trying to package into package.pyd . I have the following statement in package.py CURR = os.path.dirname(os.path.realpath(__file__)) which works fine when I run package.py but when I import package.pyd into another file wrapper.py I get the following error message Traceback (most recent call last): File "C:\Projects\Wrapper.py", line 1, in <module> import package File "package.py", line 40, in init package (package.c:4411) NameError: name '__file__' is not

How to get path of the pyd file aka equivalent of __file__

由 流过昼夜 提交于 2020-11-29 10:48:49
问题 I have a file package.py that i am trying to package into package.pyd . I have the following statement in package.py CURR = os.path.dirname(os.path.realpath(__file__)) which works fine when I run package.py but when I import package.pyd into another file wrapper.py I get the following error message Traceback (most recent call last): File "C:\Projects\Wrapper.py", line 1, in <module> import package File "package.py", line 40, in init package (package.c:4411) NameError: name '__file__' is not

SystemError, Parent module 'pycra_cy' not loaded, cannot perform relative import

由 坚强是说给别人听的谎言 提交于 2020-11-25 04:25:52
问题 My dictionary looks like this: pycra |_____crack.py |_____files.py |_____parse.py |_____pycra_cy.c |_____pycra_cy.cpython-36m-x86_64-linux-gnu.so |_____pycra_cy.pyx |_____setup.py |_____tools.py My main module crack.py starts with this: #!/usr/bin/env python3 # -*- coding: utf-8 -*- import parse import numpy as np import matplotlib.pyplot as plt from scipy.spatial import distance, cKDTree import pandas as pd import time import tools import files import os import pathlib import pycra_cy ... ..

libimobiledevice安装

由 ぃ、小莉子 提交于 2020-11-21 00:32:04
https://github.com/libimobiledevice/libimobiledevice libimobiledevice安装指南，你还不知道libimobiledevice为何物，赶紧看看freebuf上的文章吧http://www.freebuf.com/news/special/53260.html 实现了iPhone，iPod Touch, Ipad等苹果设备的通讯协议，可以备份apple设备文件等等 环境准备：ubuntu16.04 sudo -i apt-get install automake libtool pkg-config usbmuxd libplist3 libplist-dev libusbmuxd4 libusbmuxd-dev cython cython-dbg doxygen libplist++3v5 libplist++-dev libgnutls-openssl27 libgnutls-dev libssl-dev ./autogen.sh 检查环境 然后 make make install 看下tools目录下的工具 转载于:https://www.cnblogs.com/nightnine/p/5478142.html 来源： oschina 链接： https://my.oschina.net/u/4518192
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