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http — HTTP modules¶

Source code: Lib/http/__init__.py

http is a package that collects several modules for working with the HyperText Transfer Protocol:

  • http.client is a low-level HTTP protocol client; for high-level URL opening use urllib.request

  • http.server contains basic HTTP server classes based on socketserver

  • http.cookies has utilities for implementing state management with cookies

  • http.cookiejar provides persistence of cookies

The http module also defines the following enums that help you work with http related code:

class http.HTTPStatus¶

Added in version 3.5.

A subclass of enum.IntEnum that defines a set of HTTP status codes, reason phrases and long descriptions written in English.

Usage:

>>> from http import HTTPStatus
>>> HTTPStatus.OK
HTTPStatus.OK
>>> HTTPStatus.OK == 200
True
>>> HTTPStatus.OK.value
200
>>> HTTPStatus.OK.phrase
'OK'
>>> HTTPStatus.OK.description
'Request fulfilled, document follows'
>>> list(HTTPStatus)
[HTTPStatus.CONTINUE, HTTPStatus.SWITCHING_PROTOCOLS, ...]

HTTP status codes¶

Supported, IANA-registered status codes available in http.HTTPStatus are:

Code

Enum Name

Details

100

CONTINUE

HTTP Semantics RFC 9110, Section 15.2.1

101

SWITCHING_PROTOCOLS

HTTP Semantics RFC 9110, Section 15.2.2

102

PROCESSING

WebDAV RFC 2518, Section 10.1

103

EARLY_HINTS

An HTTP Status Code for Indicating Hints RFC 8297

200

OK

HTTP Semantics RFC 9110, Section 15.3.1

201

CREATED

HTTP Semantics RFC 9110, Section 15.3.2

202

ACCEPTED

HTTP Semantics RFC 9110, Section 15.3.3

203

NON_AUTHORITATIVE_INFORMATION

HTTP Semantics RFC 9110, Section 15.3.4

204

NO_CONTENT

HTTP Semantics RFC 9110, Section 15.3.5

205

RESET_CONTENT

HTTP Semantics RFC 9110, Section 15.3.6

206

PARTIAL_CONTENT

HTTP Semantics RFC 9110, Section 15.3.7

207

MULTI_STATUS

WebDAV RFC 4918, Section 11.1

208

ALREADY_REPORTED

WebDAV Binding Extensions RFC 5842, Section 7.1 (Experimental)

226

IM_USED

Delta Encoding in HTTP RFC 3229, Section 10.4.1

300

MULTIPLE_CHOICES

HTTP Semantics RFC 9110, Section 15.4.1

301

MOVED_PERMANENTLY

HTTP Semantics RFC 9110, Section 15.4.2

302

FOUND

HTTP Semantics RFC 9110, Section 15.4.3

303

SEE_OTHER

HTTP Semantics RFC 9110, Section 15.4.4

304

NOT_MODIFIED

HTTP Semantics RFC 9110, Section 15.4.5

305

USE_PROXY

HTTP Semantics RFC 9110, Section 15.4.6

307

TEMPORARY_REDIRECT

HTTP Semantics RFC 9110, Section 15.4.8

308

PERMANENT_REDIRECT

HTTP Semantics RFC 9110, Section 15.4.9

400

BAD_REQUEST

HTTP Semantics RFC 9110, Section 15.5.1

401

UNAUTHORIZED

HTTP Semantics RFC 9110, Section 15.5.2

402

PAYMENT_REQUIRED

HTTP Semantics RFC 9110, Section 15.5.3

403

FORBIDDEN

HTTP Semantics RFC 9110, Section 15.5.4

404

NOT_FOUND

HTTP Semantics RFC 9110, Section 15.5.5

405

METHOD_NOT_ALLOWED

HTTP Semantics RFC 9110, Section 15.5.6

406

NOT_ACCEPTABLE

HTTP Semantics RFC 9110, Section 15.5.7

407

PROXY_AUTHENTICATION_REQUIRED

HTTP Semantics RFC 9110, Section 15.5.8

408

REQUEST_TIMEOUT

HTTP Semantics RFC 9110, Section 15.5.9

409

CONFLICT

HTTP Semantics RFC 9110, Section 15.5.10

410

GONE

HTTP Semantics RFC 9110, Section 15.5.11

411

LENGTH_REQUIRED

HTTP Semantics RFC 9110, Section 15.5.12

412

PRECONDITION_FAILED

HTTP Semantics RFC 9110, Section 15.5.13

413

CONTENT_TOO_LARGE

HTTP Semantics RFC 9110, Section 15.5.14

414

URI_TOO_LONG

HTTP Semantics RFC 9110, Section 15.5.15

415

UNSUPPORTED_MEDIA_TYPE

HTTP Semantics RFC 9110, Section 15.5.16

416

RANGE_NOT_SATISFIABLE

HTTP Semantics RFC 9110, Section 15.5.17

417

EXPECTATION_FAILED

HTTP Semantics RFC 9110, Section 15.5.18

418

IM_A_TEAPOT

HTCPCP/1.0 RFC 2324, Section 2.3.2

421

MISDIRECTED_REQUEST

HTTP Semantics RFC 9110, Section 15.5.20

422

UNPROCESSABLE_CONTENT

HTTP Semantics RFC 9110, Section 15.5.21

423

LOCKED

WebDAV RFC 4918, Section 11.3

424

FAILED_DEPENDENCY

WebDAV RFC 4918, Section 11.4

425

TOO_EARLY

Using Early Data in HTTP RFC 8470

426

UPGRADE_REQUIRED

HTTP Semantics RFC 9110, Section 15.5.22

428

PRECONDITION_REQUIRED

Additional HTTP Status Codes RFC 6585

429

TOO_MANY_REQUESTS

Additional HTTP Status Codes RFC 6585

431

REQUEST_HEADER_FIELDS_TOO_LARGE

Additional HTTP Status Codes RFC 6585

451

UNAVAILABLE_FOR_LEGAL_REASONS

An HTTP Status Code to Report Legal Obstacles RFC 7725

500

INTERNAL_SERVER_ERROR

HTTP Semantics RFC 9110, Section 15.6.1

501

NOT_IMPLEMENTED

HTTP Semantics RFC 9110, Section 15.6.2

502

BAD_GATEWAY

HTTP Semantics RFC 9110, Section 15.6.3

503

SERVICE_UNAVAILABLE

HTTP Semantics RFC 9110, Section 15.6.4

504

GATEWAY_TIMEOUT

HTTP Semantics RFC 9110, Section 15.6.5

505

HTTP_VERSION_NOT_SUPPORTED

HTTP Semantics RFC 9110, Section 15.6.6

506

VARIANT_ALSO_NEGOTIATES

Transparent Content Negotiation in HTTP RFC 2295, Section 8.1 (Experimental)

507

INSUFFICIENT_STORAGE

WebDAV RFC 4918, Section 11.5

508

LOOP_DETECTED

WebDAV Binding Extensions RFC 5842, Section 7.2 (Experimental)

510

NOT_EXTENDED

An HTTP Extension Framework RFC 2774, Section 7 (Experimental)

511

NETWORK_AUTHENTICATION_REQUIRED

Additional HTTP Status Codes RFC 6585, Section 6

In order to preserve backwards compatibility, enum values are also present in the http.client module in the form of constants. The enum name is equal to the constant name (i.e. http.HTTPStatus.OK is also available as http.client.OK).

Changed in version 3.7: Added 421 MISDIRECTED_REQUEST status code.

Added in version 3.8: Added 451 UNAVAILABLE_FOR_LEGAL_REASONS status code.

Added in version 3.9: Added 103 EARLY_HINTS, 418 IM_A_TEAPOT and 425 TOO_EARLY status codes.

Changed in version 3.13: Implemented RFC9110 naming for status constants. Old constant names are preserved for backwards compatibility: 413 REQUEST_ENTITY_TOO_LARGE, 414 REQUEST_URI_TOO_LONG, 416 REQUESTED_RANGE_NOT_SATISFIABLE and 422 UNPROCESSABLE_ENTITY.

HTTP status category¶

Added in version 3.12.

The enum values have several properties to indicate the HTTP status category:

Property

Indicates that

Details

is_informational

100 <= status <= 199

HTTP Semantics RFC 9110, Section 15

is_success

200 <= status <= 299

HTTP Semantics RFC 9110, Section 15

is_redirection

300 <= status <= 399

HTTP Semantics RFC 9110, Section 15

is_client_error

400 <= status <= 499

HTTP Semantics RFC 9110, Section 15

is_server_error

500 <= status <= 599

HTTP Semantics RFC 9110, Section 15

Usage:

>>> from http import HTTPStatus
>>> HTTPStatus.OK.is_success
True
>>> HTTPStatus.OK.is_client_error
False
class http.HTTPMethod¶

Added in version 3.11.

A subclass of enum.StrEnum that defines a set of HTTP methods and descriptions written in English.

Usage:

>>> from http import HTTPMethod
>>>
>>> HTTPMethod.GET
<HTTPMethod.GET>
>>> HTTPMethod.GET == 'GET'
True
>>> HTTPMethod.GET.value
'GET'
>>> HTTPMethod.GET.description
'Retrieve the target.'
>>> list(HTTPMethod)
[<HTTPMethod.CONNECT>,
 <HTTPMethod.DELETE>,
 <HTTPMethod.GET>,
 <HTTPMethod.HEAD>,
 <HTTPMethod.OPTIONS>,
 <HTTPMethod.PATCH>,
 <HTTPMethod.POST>,
 <HTTPMethod.PUT>,
 <HTTPMethod.TRACE>]

HTTP methods¶

Supported, IANA-registered methods available in http.HTTPMethod are:

Method

Enum Name

Details

GET

GET

HTTP Semantics RFC 9110, Section 9.3.1

HEAD

HEAD

HTTP Semantics RFC 9110, Section 9.3.2

POST

POST

HTTP Semantics RFC 9110, Section 9.3.3

PUT

PUT

HTTP Semantics RFC 9110, Section 9.3.4

DELETE

DELETE

HTTP Semantics RFC 9110, Section 9.3.5

CONNECT

CONNECT

HTTP Semantics RFC 9110, Section 9.3.6

OPTIONS

OPTIONS

HTTP Semantics RFC 9110, Section 9.3.7

TRACE

TRACE

HTTP Semantics RFC 9110, Section 9.3.8

PATCH

PATCH

HTTP/1.1 RFC 5789
© Copyright 2001 Python Software Foundation.
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