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Built-in Third-party Libraries | App Engine standard environment for Python 2
Built-in Third-party Libraries
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This page documents and describes built-in third-party libraries that you can use with the App Engine Python 2.7 runtime. Some libraries require that you install them locally when testing with the local development server.
The App Engine Python 2.7 runtime can provide your application with the following third-party libraries:
Name Default version Supported versions Description django (None) "1.2" (deprecated)
"1.3" (deprecated)
"1.4"
"1.5" (deprecated)
"1.9" (deprecated)
"1.11" A full-featured web application framework for Python. enum (None) "0.9.23" A backport of the enum module introduced in python 3.4 endpoints (None) "1.0" Libraries for building APIs in an App Engine application. flask (None) "0.12" Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions. futures (None) "3.0.5" Backport of Python 3.2 Futures. grpcio (None) "1.0.0" A high performance general RPC framework. ("1.1.0dev is no longer supported. Please use 1.0.0 instead".) jinja2 (None) "2.6" A modern and designer friendly templating language for Python. lxml (None) "2.3" (deprecated)
"2.3.5" (deprecated)
"3.7.3" A Pythonic binding for the C libraries libxml2 and libxslt. markupsafe (None) "0.15"
"0.23" A XML/HTML/XHTML markup safe string for Python. matplotlib (None) "1.2.0" A 2D plotting library which produces publication-quality figures. MySQLdb (None) "1.2.4b4" (deprecated)
"1.2.4" (deprecated)
"1.2.5" A Python DB API v2.0 compatible interface to MySQL. numpy (None) "1.6.1" A general-purpose library for array-processing. PIL (None) "1.1.7" A library for creating and transforming images. protorpc "1.0" "1.0" A framework for implementing HTTP-based remote procedure call (RPC) services. pytz "2017.3" "2016.4" (deprecated)
"2017.2" (deprecated)
"2017.3" A library for cross-platform timezone calculations crcmod (None) "1.7" A library for generating Cyclic Redundancy Checks (CRC). protobuf (None) "3.0.0" (alpha) A library for serializing structured data PyAMF (None) "0.6.1"
"0.7.2" (alpha) A library that provides (AMF) Action Message Format functionality. pycrypto (None) "2.3" (deprecated)
"2.6"
"2.6.1" A library of cryptography functions such as random number generation. setuptools (None) "0.6c11" (deprecated)
"36.6.0" A library that provides package and module discovery capabilities. six "1.12.0" "1.9.0"
"1.12.0" Abstract differences between py2.x and py3 ssl (None) "2.7" (deprecated)
"2.7.11" The SSL socket wrapper built-in module. ujson (None) "1.35" UltraJSON is an ultra fast JSON encoder and decoder written in pure C webapp2 "2.3" "2.3"
"2.5.1" (deprecated)
"2.5.2" A lightweight Python web framework. webob "1.1.1" "1.1.1"
"1.2.3" A library that provides wrappers around the WSGI request environment. werkzeug "0.11.10" "0.11.10" A WSGI utility library. yaml "3.10" "3.10" A library for YAML serialization and deserialization.
For information about how to use these libraries, see Using Built-in Libraries in Python 2.7.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-07 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["This document details the third-party libraries available for use with the App Engine Python 2.7 runtime."],["The App Engine Python 2.7 runtime offers a variety of libraries, including web frameworks, utility, and data-processing libraries, such as Django, Flask, NumPy, and many others."],["Each listed library has specified supported versions, and many do not have default versions pre-selected."],["Some libraries must be installed locally when using the local development server for testing purposes."],["The provided content gives both information and specific links for the reader to learn more about how to use these built-in libraries."]]],[]]
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