python.md

python language bookmarks

• Packaging Python Projects

  • Hybrid Python/C++ packages, revisited
    • An example of a hybrid python/C++ package with unit tests
    • create python extensions with pybind11.
    • pybind11 docs & issues
      • pybind11 Eigen support
      • Can you support Tensor datatype from Eigen library?

• virtual environments

  • Python Virtual Environments
  • Linux: Install pip Client To Install Python Packages
  • Virtual Python Environment builder http://virtualenv.pypa.io
  • The PyPA recommended tool for installing Python packages https://pip.pypa.io/

• anaconda links

  • Installation of Python, Spyder, Numpy, Sympy, Scipy, Pytest, Matplotlib via Anaconda (2014)
  • Anaconda Package Documentation
  • anaconda ska inux-x86_64 Repodata
  • Peter Williams pkgw: conda install --channel https://conda.anaconda.org/pkgw gdk-pixbuf
    • ImportError: libpng15.so.15: cannot open shared object file: No such file or directory
    • Meld crashes Unrecognized image file format #33138
    • symbol loopkup error: libgobject-2.0.so.0:undefined symbol: g_bytes_unref
  • Anaconda Accelerate Fast Python for GPUs and multi-core with NumbaPro and MKL Optimizations
    • Thread: Non-standard python
  • miniconda tl;dr

    wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O ~/miniconda.sh
    bash ~/miniconda.sh -b -p ~/miniconda 
    rm ~/miniconda.sh
    echo "PATH=$PATH:$HOME/miniconda/bin" >> .bashrc
    echo ". ~/miniconda/etc/profile.d/conda.sh" >> ~/.bash_profile

    • Conda activate not working?
    • Install Python dependency packages from requirements.txt using conda

• cython links

  • Cython code for the Computer Language Benchmark Game

• numpy issues

  • Unable to import numpy: Error: /usr/lib/liblapack.so.3: undefined symbol: gotoblas
  • the cure pip install --upgrade numpy from here

• pychebfun - Python Chebyshev Functions

  • AN EXTENSION OF MATLAB TO CONTINUOUS FUNCTIONS AND OPERATORS

• Bessel functions in SciPy

• PyInterval

• Numba

  • Numba: Tell those C++ bullies to get lost
    • Numba tutorial materials for Scipy 2016

• StackOverflow questions

  • Python sort dict by key
  • Python item freq count

• Quantum Mechanics in Python

  • Symbolic Quantum Mechanics using SymPy
    • Test and demo notebooks for the sympy.physics.quantum
  • QuTiP: Quantum Toolbox in Python
  • Quantum Python: Animating the Schrodinger Equation

• Asynchronous Programming in Python

• HTTP Server and Client in Python

  • Let’s Build A Web Server. Part 1.
  • Simple HTTP Server and Client in Python

• Python daemon

  • python-daemon 2.1.1
  • Python daemonizer class - outdated
  • How to make a Python script run like a service or daemon in Linux
  • Немного фактов о python asyncio

• Selected StackOverflow Python questions

  • Invalid Token when using Octal numbers use 0o22 instead of 022.

  • How to unzip a list of tuples into individual lists?

  • Transpose/Unzip Function (inverse of zip)

  • How do I use Python's itertools.groupby()?

  • The order of nested list comprehension and nested generator expression in python

  • list comprehension vs. lambda + filter

  • How to split a sequence according to a predicate?

  • numpy linear algebra stack overflow questions and other numpy questions

    • How can I project a 3D point onto a 3D line?
    • Shortest distance between a point and a line in 3 d space
    • Distance between point and a line (from two points)
    • How to compute angle using NumPy?
    • Finding the closest point to a list of points
    • Convert numpy array to tuple
    • ValueError: setting an array element with a sequence
    • How to zip two 1d numpy array to 2d numpy array
    • numpy max vs amax vs maximum

  • Python3: Invalid Syntax

  • In practice, what are the main uses for the new “yield from” syntax in Python 3.3?

  • What does the “yield” keyword do?

  • attrs by Example

  • Why should you use namedtuple instead of a tuple?

  • Try out walrus operator in Python 3.8

• Seamless operability between C++11 and Python

  • pybind11 : First steps

• improve-your-python-understanding-unit-testing

  • What is the best way to compare floats for almost-equality in Python

• Object Oriented Programming(OOP) in Python Full Tutorial - 2019

• Python Image Processing Tutorial (Using OpenCV)

• An A-Z of useful Python tricks

• Make better CLI progress bars with Unicode block characters

• How to repeat a string a variable number of times in C++?

• Convert bytes to a string

• Python to list HTTP-files and directories

  • Web Scraping and Parsing HTML in Python with Beautiful Soup
    • tl;dr sudo pip3 install bs4
  • scrapy - open source and collaborative framework for extracting the data you need from websites
  • How to split a dos path into its components in Python
    • pathlib — Object-oriented filesystem paths

• Missing Python.h in Arch
  tl;dr

gcc py.c $(pkg-config --cflags --libs python3) -o py

• Using Rust to corrode insane Python run-times

• Choosing a faster JSON library for Python

  • Benchmarking Python JSON serializers - json vs ujson vs orjson

• Docker how to make python 3.8 as default tl;dr

ENV PATH=/venv/bin:$PATH
RUN \
    && apt-get update \
    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
        software-properties-common \
    && add-apt-repository -y ppa:deadsnakes \
    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
        python3.8-venv \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* \
    && python3.8 -m venv /venv