TPT-4278: python-sdk: Implement support for Reserved IP for IPv4

[mgwoj]

📝 Description

Add full Reserved IP support to the Python SDK (linode_api4-python). Currently there is no reserved IP support in the SDK. This story covers new object classes, networking group methods, and updates to existing objects.

✔️ How to Test

make test-unit

[Copilot]

Pull request overview

Adds Reserved IPv4 (Reserved IP) support across the SDK, including new networking objects, networking group endpoints, and integration with existing tagging and allocation flows.

Changes:

• Introduces Reserved IP models (ReservedIPAddress, ReservedIPType, ReservedIPAssignedEntity) and exposes reserved/tags/assigned_entity on IPAddress.
• Adds networking group methods for listing/creating reserved IPs and fetching reserved IP types/pricing.
• Extends tagging and allocation APIs/tests to support reserved IPv4 assignment (Instance/NodeBalancer/Tag flows), plus new fixtures and pytest config.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
test/unit/objects/tag_test.py	Adds unit coverage for tagged reserved IPv4 objects and tag creation with reserved IPv4s.
test/unit/objects/networking_test.py	Adds unit coverage for Reserved IP fields, save/delete flows, and Instance IP allocation with explicit address.
test/unit/groups/networking_test.py	Adds unit coverage for networking group reserved IP list/create/types and reserved-vs-ephemeral allocation behavior.
test/fixtures/networking_reserved_ips.json	Fixture data for listing reserved IPs.
test/fixtures/networking_reserved_ips_types.json	Fixture data for reserved IP type pricing.
pytest.ini	Adds pytest discovery defaults and marker declarations.
conftest.py	Ensures repo root is importable for pytest runs from arbitrary working dirs.
linode_api4/objects/tag.py	Enables tagged object resolution for reserved_ipv4_address and supports non-id identifiers via id_attribute.
linode_api4/objects/networking.py	Adds Reserved IP object models and new/updated IP-related properties.
linode_api4/objects/linode.py	Extends Instance.ip_allocate to optionally assign a reserved IPv4 address.
linode_api4/groups/tag.py	Adds reserved_ipv4_addresses support to tag creation.
linode_api4/groups/nodebalancer.py	Adds optional ipv4 param to assign a reserved IPv4 at NodeBalancer creation.
linode_api4/groups/networking.py	Extends ip_allocate for reserved IP allocation and adds reserved IP list/create/types group methods.
linode_api4/groups/linode.py	Adds ipv4 parameter for assigning reserved IPv4s at instance creation.

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[yec-akamai]

Can we restrict the type for the parameters? We prefer not implementing generic types for python-sdk.
Same for the rest functions in this PR

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 3 comments.

---

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[Copilot]

Pytest configuration is now split between this pytest.ini and the existing [tool.pytest.ini_options] section in pyproject.toml. Because pytest.ini takes precedence, the pyproject settings will be ignored, which can lead to drift. Consider consolidating all pytest settings into a single config location (either remove pytest.ini and move these options into pyproject.toml, or remove the pyproject pytest section).

Suggested change

	[pytest]
	testpaths = test
	markers =
	smoke: mark a test as a smoke test
	flaky: mark a test as a flaky test for rerun
	python_files = *_test.py test_*.py
	# Pytest configuration is centralized in pyproject.toml under
	# [tool.pytest.ini_options]. This file is intentionally left without
	# active pytest settings to avoid precedence conflicts and config drift.