Links tagged “python”

pbpython.com

Explains how pandas' transform() paired with groupby() returns a result aligned to the original rows, unlike aggregation, using percentage-of-total as the example.

arxiv.org

Paper introducing FlashText, a trie-based algorithm that searches or replaces keywords in a single linear pass over a document instead of regex's O(M×N).

python-graph-gallery.com

A collection of hundreds of Python charts, each with reproducible code and an explanation, organised by chart type.

tryolabs.com

Round-up of ten Python libraries that stood out in 2017, from Pipenv and PyTorch to Dash, FlashText and Luminoth.

blog.patricktriest.com

Tutorial building a cryptocurrency market analysis in Python with pandas and Plotly, charting price history and correlations between coins.

django-guardian.readthedocs.io

Documentation for django-guardian, an extra authentication backend adding per-object permissions to Django.

pypi.python.org

Command-line utility that displays installed Python packages as a dependency tree rather than a flat list.

pypi.python.org

Command-line tool that finds packages in a Python environment for which an update is available.

eev.ee

Compares how Python, Lua, JavaScript and Perl each implement objects, showing object models vary far more than the C++/Java template suggests.

graphene-python.org

Library for building GraphQL APIs in Python.

obeythetestinggoat.com

Explains why Selenium cannot tell a navigation from an in-page click, and gives a context manager that waits on stale element references instead.

medium.com

Rundown of fifteen Python data-science libraries — NumPy, Pandas, Matplotlib, Scikit-Learn, TensorFlow, NLTK and others — grouped by purpose.

nicolas.kruchten.com

Introduces the pivottablejs module, which embeds the PivotTable.js drag-and-drop pivot table and chart interface in a Jupyter notebook over a pandas DataFrame.

docs.scipy.org

NumPy reference page on universal functions, the vectorised element-wise operations over ndarrays, and their broadcasting, type-casting and output rules.

py2neo.org

Documentation for py2neo, a Python client library and command-line toolkit for working with Neo4j; the project is now end of life.

cffi.readthedocs.io

Documentation for CFFI, the C Foreign Function Interface for Python, which calls C code from Python using C-like declarations copied from headers.

numba.pydata.org

Open-source JIT compiler that translates a subset of Python and NumPy code to machine code through decorators, with no separate compilation step.

pybind11.readthedocs.io

Documentation for pybind11, a header-only library that exposes C++ types to Python and back, mainly to create Python bindings for existing C++ code.

attrs.readthedocs.io

Documentation for attrs, the Python library that generates a class's dunder methods from its declared attributes so classes stay short and correct.

codewithoutrules.com

Guide for Java developers moving to Python, covering type annotations and mypy, access-control conventions, testing with pytest and tox, static analysis and Sphinx docs.