PyPI Ranking home
1st simplejson

Simple, fast, extensible JSON encoder/decoder for Python

4,651,536
2nd six

Python 2 and 3 compatibility utilities

1,752,543
3rd pyasn1

ASN.1 library for Python

1,374,424
4th python-dateutil

Extensions to the standard python 3.0+ datetime module

1,028,231
5th setuptools

Download, build, install, upgrade, and uninstall Python packages -- easily!

958,145
6th docutils

Docutils -- Python Documentation Utilities

957,916
7th rsa

Pure-Python RSA implementation

933,513
8th requests

Python HTTP for Humans.

926,936
9th cffi

Foreign Function Interface for Python calling C code.

920,756
10th pip

pip installs packages. Python packages. An easy_install replacement

863,252
11th botocore

Low-level, data-driven core of boto 3.

843,493
12th jmespath

JSON Matching Expressions

776,702
13th awscli

Universal Command Line Environment for AWS.

765,632
14th PyYAML

YAML parser and emitter for Python

753,146
15th pycparser

C parser in Python

750,021
16th colorama

Cross-platform colored terminal text.

717,406
17th ndg-httpsclient

Provides enhanced HTTPS support for httplib and urllib2 using PyOpenSSL

634,730
18th wheel

A built-package format for Python.

469,234
19th virtualenv

Virtual Python Environment builder

441,854
20th pycrypto

Cryptographic modules for Python.

440,467
21st pytz

World timezone definitions, modern and historical

433,974
22nd MarkupSafe

Implements a XML/HTML/XHTML Markup safe string for Python

424,404
23rd Jinja2

A small but fast and easy to use stand-alone template engine written in pure python.

384,850
24th boto

Amazon Web Services Library

355,884
25th pbr

Python Build Reasonableness

346,309
26th enum34

Python 3.4 Enum backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4

307,721
27th certifi

Mozilla's SSL Certs.

290,324
28th ecdsa

ECDSA cryptographic signature library (pure python)

282,901
29th mock

A Python Mocking and Patching Library for Testing

279,802
30th coverage

Code coverage measurement for Python

271,405
31st cryptography

cryptography is a package which provides cryptographic recipes and primitives to Python developers.

269,729
32nd backport_ipaddress

Backport of Python 3's ipaddress module

266,372
33rd futures

Backport of the concurrent.futures package from Python 3.2

262,735
34th ipaddress

IPv4/IPv6 manipulation library

255,664
35th idna

Internationalized Domain Names in Applications (IDNA)

236,489
36th paramiko

SSH2 protocol library

231,929
37th configobj

Config file reading, writing and validation.

227,601
38th Pygments

Pygments is a syntax highlighting package written in Python.

224,435
39th argparse

Python command-line parsing library

223,713
40th psutil

A process utilities module for Python

222,341
41st pyOpenSSL

Python wrapper module around the OpenSSL library

217,693
42nd urllib3

HTTP library with thread-safe connection pooling, file post, and more.

214,220
43rd Django

A high-level Python Web framework that encourages rapid development and clean, pragmatic design.

207,091
44th pep8

Python style guide checker

206,581
45th lxml

Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API.

198,246
46th psycopg2

Python-PostgreSQL Database Adapter

195,222
47th distribute

Easily download, build, install, upgrade, and uninstall Python packages

190,483
48th Werkzeug

The Swiss Army knife of Python web development

187,483
49th nose

nose extends unittest to make testing easier

186,500
50th decorator

Better living through Python with decorators

182,076