Psycopg is a PostgreSQL database adapter for the Python programming language. Its main features are the complete implementation of the Python DB API 2.0 specification and the thread safety (several threads can share the same connection). It was designed for heavily multi-threaded applications that create and destroy lots of cursors and make a large number of concurrent INSERTs or UPDATEs.

Psycopg 2 is mostly implemented in C as a libpq wrapper, resulting in being both efficient and secure. It features client-side and server-side cursors, asynchronous communication and notifications, COPY TO/COPY FROM support. Many Python types are supported out-of-the-box and adapted to matching PostgreSQL data types; adaptation can be extended and customized thanks to a flexible objects adaptation system.

Psycopg 2 is both Unicode and Python 3 friendly.

HTTPX is a fully featured HTTP client for Python 3, which provides sync and async APIs, and support for both HTTP/1.1 and HTTP/2.

HTTPX builds on the well-established usability of requests, and gives you:

• A broadly requests-compatible API.

• Standard synchronous interface, but with async support if you need it.

• HTTP/1.1 and HTTP/2 support.

• Ability to make requests directly to WSGI applications or ASGI applications.

• Strict timeouts everywhere.

• Fully type annotated.

• 99% test coverage.

Plus all the standard features of requests:

• International Domains and URLs

• Keep-Alive & Connection Pooling

• Sessions with Cookie Persistence

• Browser-style SSL Verification

• Basic/Digest Authentication

• Elegant Key/Value Cookies

• Automatic Decompression

• Automatic Content Decoding

• Unicode Response Bodies

• Multipart File Uploads

• HTTP(S) Proxy Support

• Connection Timeouts

• Streaming Downloads

• .netrc Support

• Chunked Requests

Zope contenttype.

Zope Deprecation Infrastructure

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