Python: Fix broken Content API imports in Python samples

[Copilot]

Motivation and Context

Python samples were using deprecated TextContent, UriContent, and DataContent classes that are no longer exported. The framework consolidated these into a unified Content class with factory methods (Content.from_text(), Content.from_uri(), etc.) but 11 sample files were not updated, causing ImportError for users.

Description

Updated all affected samples to use the current Content API:

Import changes:

• TextContent, UriContent, DataContent → Content

Constructor changes:

• TextContent(text="...") → Content.from_text(text="...")
• UriContent(uri="...", media_type="...") → Content.from_uri(uri="...", media_type="...")

Type checks:

• isinstance(content, TextContent) → content.type == "text"

Affected files (11):

• agents/azure_openai/azure_responses_client_image_analysis.py
• agents/openai/openai_responses_client_image_analysis.py
• agents/openai/openai_responses_client_image_generation.py
• agents/openai/openai_responses_client_streaming_image_generation.py
• agents/openai/openai_responses_client_with_code_interpreter.py
• agents/azure_ai/azure_ai_with_code_interpreter_file_download.py
• agents/custom/custom_agent.py
• agents/custom/custom_chat_client.py
• devui/weather_agent_azure/agent.py
• middleware/override_result_with_middleware.py
• workflows/orchestration/handoff_with_code_interpreter_file.py

Example change:

# Before
from agent_framework import TextContent, UriContent
contents=[
    TextContent(text="What do you see?"),
    UriContent(uri="https://...", media_type="image/jpeg"),
]

# After
from agent_framework import Content
contents=[
    Content.from_text(text="What do you see?"),
    Content.from_uri(uri="https://...", media_type="image/jpeg"),
]

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Python: [Bug]: Broken import paths for image analysis fields</issue_title>
<issue_description>### Description

I am currently using the latest beta versions of agent-framework-core and agent-framework (v1.0.0b260130).

I am encountering an issue with importing the necessary fields for image analysis. Specifically, I am unable to import TextContent and DataContent. It seems the import paths might have changed and I do not find it.

Could you please clarify the correct import statements for these components?

Code Sample

from agent_framework import TextContent, DataContent

Error Messages / Stack Traces

ImportError: cannot import name 'TextContent' from 'agent_framework' (...\dok-agent-research\.venv\Lib\site-packages\agent_framework\__init__.py)

Package Versions

agent-framework-core 1.0.0b260130

Python Version

Python 3.11

Additional Context

No response</issue_description>

<agent_instructions>Create a PR to fix the issues with these files still references things like TextContent(text=...). It should be Content.from_text(...) or similar, based on what is defined in _types.py</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@moonbox3 @AlPashy can you let us know which sample is showing `from agent_framework import TextContent, DataContent`? The code has been updated to use `from agent_framework import Content` and then there are class methods on Content, like `Content.from_text(...)`. @moonbox3 Can you link to it, please, so we can fix it? Thanks. @moonbox3 I can see these files have issues: - agent-framework/python/samples/getting_started/agents/azure_openai/azure_responses_client_image_analysis.py - agent-framework/python/samples/getting_started/agents/custom/custom_agent.py - agent-framework/python/samples/getting_started/agents/custom/custom_chat_client.py - agent-framework/python/samples/getting_started/agents/openai/openai_responses_client_image_analysis.py - agent-framework/python/samples/getting_started/devui/weather_agent_azure/agent.py - agent-framework/python/samples/getting_started/middleware/override_result_with_middleware.py

• Fixes Python: [Bug]: Broken import paths for image analysis fields #3638

---

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[Copilot]

Pull request overview

This PR fixes broken imports in 11 Python sample files that were using deprecated Content API classes. The samples were attempting to import TextContent, UriContent, and DataContent classes that have been consolidated into a unified Content class with factory methods.

Changes:

• Updated all affected samples to import the unified Content class instead of deprecated content type classes
• Replaced constructor calls with factory methods (Content.from_text(), Content.from_uri())
• Converted isinstance() type checks to property-based checks using content.type

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
handoff_with_code_interpreter_file.py	Updated import and replaced isinstance(content, TextContent) with content.type == "text"
override_result_with_middleware.py	Changed TextContent(text=...) to Content.from_text(text=...)
devui/weather_agent_azure/agent.py	Changed TextContent(text=...) to Content.from_text(text=...)
openai_responses_client_with_code_interpreter.py	Replaced isinstance() checks with content.type == "text"
openai_responses_client_streaming_image_generation.py	Updated import and replaced isinstance(content, DataContent) with content.type == "data"
openai_responses_client_image_generation.py	Updated import and replaced isinstance() checks with output.type in ("data", "uri")
openai_responses_client_image_analysis.py	Replaced TextContent() and UriContent() with Content.from_text() and Content.from_uri()
custom_chat_client.py	Changed TextContent(text=...) to Content.from_text(text=...)
custom_agent.py	Changed TextContent(text=...) to Content.from_text(text=...) in multiple locations
azure_responses_client_image_analysis.py	Replaced TextContent() and UriContent() with Content.from_text() and Content.from_uri()
azure_ai_with_code_interpreter_file_download.py	Replaced isinstance(content, TextContent) checks with content.type == "text"