This is a backport of those changes so that they can be used directly in Python 2. bz2 files), which are the source code that defines Sage. Repository activity. x) and Python3 (v3. configparser. Python2 is still our default, so the commands python or python2 will both run python 2. If you're running Jupyter on Python 3, you can set up a Python 2 kernel like this:. It's an appealing way to engage awesome developers if your project is Open Source. 4 configparser==3. Single Source Python 2 3 May 21, 2016 1 Single Source Python 2/3 1. futures python-isort python-mccabe python-configparser python-logilab-common pylint python-egenix-mxtools python-egenix-mxdatetime python-tk Install these. 0 International CC Attribution-Share Alike 4. See PEP-373. 2019-09-26: numpy-devel: public. VSCode打开了python代码,提示我去安装lint,就点击Install去安装了. Building wheels for collected packages: tornado, terminado, backports. Python 2 と Python 3 のどちらを使って開発すべき? 違いは何? 簡単に言えば、Python 2. Jaime, > > *" File "GUI. py", line 14, in * > * File "configparser. Néanmoins, lorsque j'essaie de. Machine Learning に使うライブラリを確認するため、OSのコマンドラインに命令を送る。. 首先一个重要的python-dev一般都没有安装,所以需要sudo apt-get install python-dev. 完事继续安装mysql-python,发现还是不行。 6. Hello, and welcome on my small web space. configparser works when its dir is added via site. shutil_get_terminal_size backports_abc configparser ˓→contextlib2 cycler cython dbus decorator enum34 expat fastcache fontconfig freetype ˓→funcsigs functools32 futures gettext glib gmp gmpy2 gst-plugins-base gstreamer h5py. xz] Maintainer: Ubuntu MOTU Developers (Mail Archive) Please consider filing a bug or asking a question via Launchpad before contacting the maintainer directly. 7 on windows, but it is much more likely to be a bug in backports on windows. ConfigParser. Python - Working Files/Chapter 4/Storing Your Data. You can vote up the examples you like or vote down the ones you don't like. open source hacker: get your dose of Linux, Ubuntu, Python, Javascript, HTML5 and other cool and free technology. 6 and getting that. from backports. x has seen a major update in Python 3. I follow the method described in yolov3_onnx sample in TensortRT-5. I also checked if I had my own version of io. To unsubscribe from this group and stop receiving emails from it, send an email to spyderlib+***@googlegroups. プログラミングに関係のない質問 やってほしいことだけを記載した丸投げの質問 問題・課題が含まれていない質問 意図的に内容が抹消された質問 広告と受け取られるような投稿. 5 for Python 3 clusters. Backport of the functools module from Python 3. python lda gensim topic-modeling this question edited Mar 31 '16 at 9:13 asked Mar 31 '16 at 8:39 Tejasvi Rao 21 4 Please show the code you are using. 7 not fully installed or removed. Hello, and welcome on my small web space. python-iniparse. 0 pytest-runner-4. This has to happen. While you can discover a little about Anthony on his website, you will probably learn more from his Github profile. configparser"* > > I tried use other kind of import like this from backports import > configparser but it doesn't works. 4 and setuptools >= 0. 3D 3D Editors Action Amusements Applications Arcade Archiving Astronomy Background Backup Base Benchmark Bitmap Editors Board Boot Breakout Browsers Building C and C++ C++ CAD Camera Card CD Chemistry Chess Chinese Clients Clocks Clustering Compression Computing Console Convertors Daemons Databases Debug Debuggers Development Diagnostic. OpenEmbedded layers collection contribution trees: OpenEmbedded: about summary refs log tree commit diff stats. functools_lru_cache. As the proposals in this PEP aim to facilitate backports to earlier Python versions, the Python version number cannot be used as a reliable means for detecting them. 255911+00: Vincent Cheng Vincent Cheng. 1 ML uses Conda for Python package management. Make sure to check my write-up on how to install python on windows. Hi guys! I'm trying to make Platform-io home page works. python lda gensim topic-modeling this question edited Mar 31 '16 at 9:13 asked Mar 31 '16 at 8:39 Tejasvi Rao 21 4 Please show the code you are using. x if you divide 3/2 you will get answer as 1 as Python 2 performs basic division. 4 Enum: Funcsigs: Python function. mga7: Backports and enhancements for the contextlib module:. 7 on windows, but it is much more likely to be a bug in backports on windows. py", line 812, in main(). Please note that this mail was generated by a script. iniparse is an INI parser for Python which is API compatible with the standard library's ConfigParser, preserves structure of INI files (order of sections & options, indentation, comments, and blank lines are preserved when data is updated), and is more convenient to use. You can vote up the examples you like or vote down the ones you don't like. pythonコマンドからもpandasが参照できていないならちょっとわかりません(たしかにpip freezeで出ているのに不思議です)。 もし3. When creating your environment, you have the option of picking between core or full versions of Python 2 and 3. Python libraries. To use the configparser2 backport instead of the built-in version on both Python 2 and Python 3, simply import it explicitly as a backport:. Need to get 0 B/1,364 kB of archives. If you see a package that shouldn't be removed, you can help us change the automation, or wait for the bugzilla to block it, so you don't have to worry that if this change gets approved, all listed packages are gone for good. Use the ConfigParser module to manage user-editable configuration files for an application. The directory structure within that egg is for the backports. pip install jupyter. Si todavía no jugar a la pelota, check-in C:\Anaconda3\lib\site-packages que los backports carpeta está ahí. 7 on windows, but it is much more likely to be a bug in backports on windows. 将会安装下列额外的软件包: python-pkg-resources 建议安装的软件包: python-distribute-doc 下列软件包将被升级: python-pkg-resources 升级了 1 个软件包,新安装了 0 个软件包,要卸载 0 个软件包,有 582 个软件包未被升级。 有 36 个软件包没有被完全安装或卸载。. Use the read() method of ConfigParser to read the configuration file. 7 will officially end January 1, 2020 though one more release is planned for mid April 2020. Glues together optparse. I'm using docker continuumio/anaconda image. The full online repo contains too many changes to be listed here. functools_lru_cache. Machine Learning に使うライブラリを確認するため、OSのコマンドラインに命令を送る。. ˓→functools_lru_cache backports. Future is the missing compatibility layer between Python 2 and Python 3. If you are about to ask a "how do I do this in python" question, please try r/learnpython, the Python discord, or the #python IRC channel on FreeNode. py" to convert it to onnx format,but the python script report below errors: Traceback (most recent call last): File "yolov3_to_onnx. This is an updated version of my previous blog post on few recommended practices for optimizing your Python code. ssl-match-hostname_3. 1_0 py27-backports-functools_lru_cache @1. I wrote some pieces of free software, often closely related to Emacs, because this text editor is awesome, and often in Python, because it is soooooooo greeaaat a programming language. pipコマンドは実際にはpip3であり、Python(2. 7 will officially end January 1, 2020 though one more release is planned for mid April 2020. Parameters: Affected:. New features in modern Python These are features that have been released in a version of Python after 3. PlexAPI configuration object. Я запускаю Python2. org:/var/cvsroot co gentoo-x86/dev-python Developer Access: cvs -d :ext:${USER}@cvs. Smaller changes: configparser, subprocess32, functools32, and the various backports-dot-something packages. gz] [backports. shutil_get_terminal_size backports_abc configparser ˓→contextlib2 cycler cython dbus decorator enum34 expat fastcache fontconfig freetype ˓→funcsigs functools32 futures gettext glib gmp gmpy2 gst-plugins-base gstreamer h5py. 11 pytest-subtesthack-0. Program Talk All about programming : Java core, Tutorials, Design Patterns, Python examples and much more. When creating your environment, you have the option of picking between core or full versions of Python 2 and 3. Lorsque j'essaie d'installer functools manuellement par l'intermédiaire de. Few popular Python libraries use 2to3, and most embrace the idea of single-codebase cross-version support. futures python-isort python-mccabe python-configparser python-logilab-common pylint python-egenix-mxtools python-egenix-mxdatetime python-tk Install these. weights from darknet's site,and type "python yolov3_to_onnx. backports of new features in Python 2 tempfile module simple but powerful config file reader and writer for Python 2 python-configparser (3. open source hacker: get your dose of Linux, Ubuntu, Python, Javascript, HTML5 and other cool and free technology. configparser works when its dir is added via site. | Invalidate and Restart and add the interpreter again. Hmm, interesting. x has seen a major update in Python 3. Conda revisions: letting you ‘rollback’ to a previous version of your environment June 14, 2016. 完事继续安装mysql-python,发现还是不行。 6. 2 [ ok] * Building package for. Following is the full list of provided Python packages and versions installed using Conda package manager. Building wheels for collected packages: tornado, terminado, backports. Cherrypicked fixes and updates to resolve problems discovered while using python on ubuntu. Note: the newest versions of python comes with pip but older version has to be installed by the user. You can vote up the examples you like or vote down the ones you don't like. 1 pytest-pythonpath-0. the configparser package (which should be "backports-configparser") makes the updated version available to Python 2. Advantages of wheels. Doing so allowed for the project to release a universal wheel for Python 2 and Python 3. 0 was released. python-configparser-3. 7-dev 需要安装libpython2. This library brings the updated configparser from Python 3. Browse the Gentoo Git repositories. Python libraries. Issue tracker is now https. This module provides the ConfigParser class which implements a basic configuration language which provides a structure similar to what’s found in Microsoft Windows INI files. Meanwhile 2to3 is problematic because it complicates debugging and doesn't address issues like string handling, backports and other behavioral differences. pyc", line 12, in * > *ImportError: No module named backports. Upgrading docker didn't solve the problem for me. functools_lru_cache. Explanation: We first import the configparser, tell it to read the file, and get a listing of the sections. * Package now unconditionally installs the configparser module. The Function:. 1619 total Python packages in stock new updates since 2019-10-14. mingw-w64-x86_64-python2-setuptools-scm Handles managing your python package versions in scm metadata (mingw-w64). This provides CPU-optimized versions of Python and its supporting libraries, including numpy, scipy, matplotlib, pandas, & scikitlearn, among others. txt) or read online for free. The simplest way to write configuration files is to simply write a separate file that contains Python code. You can use this to write Python programs which can be customized by end users easily. ConfigParser. This section will contain some of the most advanced examples realized using Multithreading. We define a function in called hello which prints out information about the geopandas package, and returns the string hello. The MacPorts Project is an open-source community initiative to design an easy-to-use system for compiling, installing, and upgrading either command-line, X11 or Aqua based open-source software on the Mac OS X operating system. I wrote some pieces of free software, often closely related to Emacs, because this text editor is awesome, and often in Python, because it is soooooooo greeaaat a programming language. Единство пропало? Невозможно увидеть верхнюю или боковую панель Как сделать Ubuntu похожим на Windows Vista?. Backport of new features in Python's os module / Python Software Foundation: backports. get will probably determine the data type automatically, which could sometime have undesirable effects. Do not edit. Program Talk All about programming : Java core, Tutorials, Design Patterns, Python examples and much more. 0=py27_0 - backports=1. System environment. The ancient ConfigParser module available in the standard library 2. py", line 812, in main(). Every time I tried yo execute the command pio home I get the following error: Traceback (most recent call last): …. 6 Kafkaesque Koffka is the sixth maintenance release in the 3. This is a backport of those changes so that they can be used directly in Python 2. Instead, they are designed to allow the presence or absence of the feature to be determined using the following technique:: python -c "import ssl; ssl. 1 distribution. analyzeMFT ansible bpython cilium-microscope cookiecutter cram datovka diskimage-builder dreampie git-review gitlint gnuhealth-thalamus livestreamer mypy ninja-ide openstack-macros openstack-suse openstack-tempest openstack-utils pkipplib pyalsa pyenv python-3parclient python-abclient python-abimap python-abseil python-acme. © 2001–2019 Gentoo Foundation, Inc. When creating your environment, you have the option of picking between core or full versions of Python 2 and 3. As a result, there are major differences in pre-installed Python libraries compared to Databricks Runtime. dev-python/configparser: Backport of Python-3 built-in configparser: dev-python/constantly: Symbolic constants in Python: dev-python/construct: Powerful declarative parser/builder for binary data: dev-python/contextlib2: Backport of the Python stdlib contextlib module: dev-python/cookies: A utility library for mocking out the `requests` Python. 5_1 (active). org/pypi/backports. Link rot fixed and some grammar changes. It has three sections _meta that information is about the virtualenv, Python Version, Pypi source etc. You received this message because you are subscribed to the Google Groups "spyder" group. Jaime, > > *" File "GUI. Python and Python 3rd-party packages include a lot of conditional or optional module. Types if import: * top-level: imported at the top-level - look at these first. Original Maintainers (usually from Debian): Debian Python Modules Team (Mail Archive). It is possible to use Python 3 in Jupyter Notebook for Python 2 by adding the kernel for Python 2. ssl-match-hostname_3. You can vote up the examples you like or vote down the ones you don't like. The ancient ConfigParser module available in the standard library 2. To use the ``configparser2`` backport instead of the built-in version on both Python 2 and Python 3, simply import it explicitly as a backport:: from backports import configparser2 If you'd like to use the backport on Python 2 and the built-in version on Python 3, use that invocation instead:: import configparser2 For detailed documentation. After this operation, 0 B of additional disk space will be used. BaseHTTPServer backports imputil selinux Bastion base64 iniparse sets CDROM bdb inspect setuptools CGIHTTPServer binascii io sgmllib Canvas binhex iotop sha ConfigParser bisect itertools shelve Cookie bsddb javapackages shlex DLFCN bz2 json shutil Dialog cPickle keyword signal DocXMLRPCServer cProfile kitchen site FileDialog cStringIO lib2to3 slip FixTk calendar liblzma smtpd HTMLParser cgi. 0 pytest-mpl-0. Za Visual Code Studio sam instalirao neke ekstenzije, medju kojima neki linter, koji da bi radio (i da ne bi smarao pri svakom otkucanom redu) mora da ima instalirane pakate: autopep8 i pylint. As the proposals in this PEP aim to facilitate backports to earlier Python versions, the Python version number cannot be used as a reliable means for detecting them. 5_1 (active). 1 ML uses Conda for Python package management. Direct imports are the preferred mechanism for accesing the renamed standard library modules in Python 2/3 compatible code. It has a future library of renames and backports of Python 3 functionality that goes further than six and is designed to let you write Python 3-esque code that still runs on Python 2. I installed with the dependencies as required and cloned the git. 2019-09-26: numpy-devel: public. New features in modern Python These are features that have been released in a version of Python after 3. はじめに 引き続きスマートPythonプログラミングをやっていきます。 スマートPythonプログラミング: Pythonのより良い書き方を学ぶ作者: もみじあめ発売日: 2016/03/12メディア: Kindle版この商品を含むブログを見る take-she12. This creates a port that installs the shared file and py-backports. legacy import get_style_guide warnings. 7 Kafkaesque Koffka is the seventh maintenance release in the 3. 目前示例代码中的Python版本都是基于2. Configuration files are used by both users and programmers. Last updated Oct 21, 2019. This is a backport of those changes so that they can be used directly in Python 2. To use the configparser backport instead of the built-in version on both Python 2 and Python 3, simply import it explicitly as a backport: from backports import configparser. A new upstream version 4. The ancient ConfigParser module available in the standard library 2. 这是我目前的代码:import numpy as np try: from configparser import ConfigParser except ImportError: from ConfigParser import Con. Hands-on note about Hadoop, Cloudera, Hortonworks, NoSQL, Cassandra, Neo4j, MongoDB, Oracle, SQL Server, Linux, etc. As a result, there are major differences in pre-installed Python libraries compared to Databricks Runtime. About this update. py", line 812, in main(). 每一个你不满意的现在,都有一个你没有努力的曾经。. 3 MB: 2019-11-01 19:23:06 +0000: b33ae715f2030edab94045952e9910d2c8d7795c28b51dfcfa90ee72bfc2b20a. 7 на Windows 10, делаю env и большинство pkg-управления с Anaconda. When used directly as a language, it enriches Python with additional syntax via a Preparser and preloads useful objects into the namespace. Patch mostly by Serhiy Storchaka. Filename Size Last Modified SHA256 MD5; repodata. a52dec aalib aglfn anthy aom apache-log4j1. To unsubscribe from this group and stop receiving emails from it, send an email to spyderlib+***@googlegroups. 3, HTTPS clients in the standard library validate server certificates by default. 3to2 は 2to3 と逆で 3. I'm filing an issue with the python-future folks, but other than that, I don't really know how to solve this issue other than to eliminate the version of configparser from its position on the path. autoinclude, see issue and PR. The futurize and python-modernize tools do not currently offer an option to do this automatically. So this looks like another problem with the backports namespace. python - Unresolved Import Issues with PyDev and Eclipse; 2. Can you tell us a little about yourself (hobbies, education, etc): From a young age, I was always fascinated with computers. Smaller changes: configparser, subprocess32, functools32, and the various backports-dot-something packages. 0 (quilt) Source: sagemath Binary: sagemath, sagemath-common, sagemath-jupyter, sagemath-doc-hu, sagemath. 今、私はCloud Storageに画像データがアップロードされたらAutoMLを動かしアップロードした画像を予測させて結果を出力するということをPythonで行おうとしています。. Python Traceback Traceback (most recent call last): File "/usr/lib/python2. As it can be seen, the two python environments have a good number of modules (most of which I have and will never use 😏) One important module that was missing for my use was the "Pandas" module. x has seen a major update in Python 3. You will find here some software and documents I wrote. Focus on new technologies and performance tuning. Patch mostly by Serhiy Storchaka. 0=py27_0 - backports=1. 7 will officially end January 1, 2020 though one more release is planned for mid April 2020. The directory SAGE_ROOT/spkg/standard contains the standard SPKG's. If you do install python-eduvpn-client in a virtualenv it is recommended you create the virtualenv using the --system-site-packages flag and install the python-gi. Glues together optparse. Gentoo is a trademark of the Gentoo Foundation, Inc. 首先一个重要的python-dev一般都没有安装,所以需要sudo apt-get install python-dev. get will probably determine the data type automatically, which could sometime have undesirable effects. configparser"* > > I tried use other kind of import like this from backports import > configparser but it doesn't works. 4/site-packages/Trac-. PlexAPI configuration object. 1_0 py27-backports-functools_lru_cache @1. configparser module) - see here for more details: https. 7を用いています。 pip install jupyterを行うとエラーが出ます。 原因と対策を教えていただけませんでしょうか。 なお、最後に出て来たエラーのpip install --upgrade pipを行った場合も、Exception以下と同様のエラーが出てしまいました。. shutil_get_terminal_size y, a continuación, instalarla de nuevo. py bdist_wheel for tornado: started Running setup. It is possible to use Python 3 in Jupyter Notebook for Python 2 by adding the kernel for Python 2. So what about Python? OpenStack is nearly entirely written in Python! Why Python? OpenStack is all about glueing together various great bits of free software and providing a solid API on top of it. I've run the setup python script and this is what I get: Tasks: i - Show python/platform/machine information ie - Show environment information c - Show C compilers information c - Set C compiler (current:None) f - Show Fortran compilers information. gitignore file to avoid uploading it accidentally. Bug 1461215 - redhat-upgrade-tool craches when upgrading to python2. Unfortunately, that also messes with future's ability to allow equivalence between import statements in python2 and python3. It's widely used to build languages, tools, and frameworks. Its contents of are immediately available to python scripts. 0 International CC Attribution-Share Alike 4. Python libraries. Intel Distribution Python2017U2 Release Notes - Free download as PDF File (. 0 ML is listed below. The table below lists all currently available python modules on the Maxwell cluster for each of the major python distributions. RPM of Group Development/Python. 5 it became essential to move to it. ssl-match-hostname_3. Below is the full list of packages for the Intel® Distribution for Python*. 17-1~bpo70+1: 2014-10-29 06:33:38. BaseHTTPServer backports imputil selinux Bastion base64 iniparse sets CDROM bdb inspect setuptools CGIHTTPServer binascii io sgmllib Canvas binhex iotop sha ConfigParser bisect itertools shelve Cookie bsddb javapackages shlex DLFCN bz2 json shutil Dialog cPickle keyword signal DocXMLRPCServer cProfile kitchen site FileDialog cStringIO lib2to3 slip FixTk calendar liblzma smtpd HTMLParser cgi. shutil_get_terminal_size” et ne se charge pas Je suis en cours d'exécution Python2. [snip] UnicodeDecodeError: 'utf8' codec can't decode byte 0x92 in position 2297: invalid start byte Simply run pylint in con. 3to2 は 2to3 と逆で 3. x) via the Anaconda distribution. 1 pytest-qt-2. PlexAPI configuration object. Building wheels for collected packages: tornado, terminado, MarkupSafe, configparser, simplegeneric, backports. Click See list of pre-installed packages. Copy sent to Debian Python Modules Team. The MacPorts Project is an open-source community initiative to design an easy-to-use system for compiling, installing, and upgrading either command-line, X11 or Aqua based open-source software on the Mac OS X operating system. However, all compiler and MPI versions will be available for all versions of the stack, regardless of which stack version is loaded. x if you divide 3/2 you will get answer as 1 as Python 2 performs basic division. contextlib2. PEP 476 changed Python's default behaviour to align with expectations established by web browsers in regards to the semantics of HTTPS URLs: starting with Python 2. He is also on the "deadsnakes" PPA team, which backports Python for certain EOL Linux distros. ConfigParser 是Python自带的模块, 用来读写配置文件, 用法及其简单。 直接上代码,不解释,不多说。 配置文件的格式是: []包含的叫section, section 下有option=value这样的键值. The ConfigParser class implements a basic configuration file parser language which provides a structure similar to what you would find on Microsoft Windows INI files. The directory SAGE_ROOT/spkg/standard contains the standard SPKG's. If you are about to ask a "how do I do this in python" question, please try r/learnpython, the Python discord, or the #python IRC channel on FreeNode. xz] Maintainer: Ubuntu MOTU Developers (Mail Archive) Please consider filing a bug or asking a question via Launchpad before contacting the maintainer directly. Additional software may have been installed since this page was updated. This creates a port that installs the shared file and py-backports. OpenSesame 3. Over 2 years after Python 3's release 9% of the 200 most popular packages were marked compatible. Do you suggest any thing to get rid of that, may be upgrade configparser? – user3339691 Jul 26 '17 at 17:42. futures python-isort python-mccabe python-configparser python-logilab-common pylint python-egenix-mxtools python-egenix-mxdatetime python-tk Install these. 파일 이름 자체가 module을 나타내는 이름이다. ipynb +191-0 String Parsing with Regex. The following modules on the Python package index make standard library functionality from later versions of Python available in earlier versions (not all of them are technically backports - some existed on PyPI before being adopted wholesale into the standard library). If you need to run pylint with Python 2, then Pylint 1. System environment. Big Data & NoSQL, Information Architecture, Data Management, Governance, etc. 1 distribution. In a source install of Sage, this directory contains all the standard Sage spkg files (actually. python-samba Suggested packages: python-gpgme The following packages will be upgraded: python-samba 1 upgraded, 0 newly installed, 0 to remove and 8 not upgraded. Upgrading docker didn't solve the problem for me. This is a backport of those changes so that they can be used directly in Python 2. iniparse is an INI parser for Python which is API compatible with the standard library's ConfigParser, preserves structure of INI files (order of sections & options, indentation, comments, and blank lines are preserved when data is updated), and is more convenient to use. About this update. 7 » Docs Home Anaconda Home. python-configparser (2 bugs: 0, 1, 1, 0) action needed A new upstream version is available: 4. ssl-match-hostname_3. x 系で動作するソースコードを 2. Python libraries. This module defines the class ConfigParser. Bioinformatics and Biosciences ABySS 2. Packages for macOS with Python 2. ipynb - Working Files/Chapter 4/String Parsing with Regex. Update the python. This package is a backport of those changes so that they can be used directly in Python 2. Единство пропало? Невозможно увидеть верхнюю или боковую панель Как сделать Ubuntu похожим на Windows Vista?. Direct imports are the preferred mechanism for accesing the renamed standard library modules in Python 2/3 compatible code. 3to2 は 2to3 と逆で 3. 0 didn’t support u'' strings. A new upstream version 4. Below is the full list of packages for the Intel® Distribution for Python*. xz] Maintainer: Ubuntu MOTU Developers (Mail Archive) Please consider filing a bug or asking a question via Launchpad before contacting the maintainer directly. The following is a full list of provided Python packages and versions installed using Conda package manager. 、序 Python是一种面向对象的解释型计算机程序设计语言,其使用,具有跨平台的特点,可以在Linux、macOS. 0 ML is listed below. 通过他可以方便的读取配置文件. They are extracted from open source Python projects. As a result, there are major changes in pre-installed Python libraries compared to Databricks Runtime. This is a backport of those changes so that they can be used directly in Python 2. 私の問題は解決しました。. The goal is to allow you to write clean, modern, forward-compatible Python 3 code today and to run it with minimal effort under Python 2 alongside a Python 2 stack that may contain dependencies that have not yet been ported to Python 3.