pip install astropy==5.0rc1

Astronomy and astrophysics core library

Source
Among top 1% packages on PyPI.
Over 1.4M downloads in the last 90 days.

Commonly used with astropy

Based on how often these packages appear together in public requirements.txt files on GitHub.

numba

compiling Python code using LLVM

ccdproc

Astropy affiliated package

tables

Hierarchical datasets for Python

astroscrappy

Speedy Cosmic Ray Annihilation Package in Python

sympy

Computer algebra system (CAS) in Python

grin

A grep program configured the way I like it.

fastcache

C implementation of Python 3 functools.lru_cache

spyder

The Scientific Python Development Environment

conda

OS-agnostic, system-level binary package manager.

blaze

Blaze

comtypes

Pure Python COM package

dask

Parallel PyData with Task Scheduling

bitarray

efficient arrays of booleans -- C extension

conda-build

tools for building conda packages

llvmlite

lightweight wrapper around basic LLVM functionality

chest

Simple on-disk dictionary

clyent

Command line client Library for windwos and posix

pycosat

bindings to picosat (a SAT solver)

multipledispatch

Multiple dispatch

Version usage of astropy

Proportion of downloaded versions in the last 3 months (only versions over 1%).

4.3.1

60.01%

3.2.3

9.34%

4.1

5.23%

4.2.1

4.02%

4.3.post1

2.72%

4.3rc1

2.57%

4.0.1.post1

1.01%