chore(examples): migrate AI examples from pip to uv with locked versions (#471)

* chore(examples): migrate AI examples from pip to uv with locked versions

Replace requirements.txt with pyproject.toml + uv.lock for all AI
provider examples, pinning dependencies to latest versions for
reproducible installs. Update READMEs to use uv sync / uv run.

* chore(examples): add uv installation hint to READMEs

Author: richardsolomou

.gitignore

@@ -9,6 +9,7 @@ build/
 .vscode/
 env/
 venv/
+.venv/
 flake8.out
 pylint.out
 posthog-analytics

examples/example-ai-anthropic/README.md

@@ -5,9 +5,10 @@ Track Anthropic Claude API calls with PostHog.
 ## Setup
 
 ```bash
-pip install -r requirements.txt
 cp .env.example .env
 # Fill in your API keys in .env
+# Install uv if you haven't already: https://docs.astral.sh/uv/getting-started/installation/
+uv sync
 ```
 
 ## Examples
@@ -20,7 +21,7 @@ cp .env.example .env
 
 ```bash
 source .env
-python chat.py
-python streaming.py
-python extended_thinking.py
+uv run python chat.py
+uv run python streaming.py
+uv run python extended_thinking.py
 ```

examples/example-ai-anthropic/pyproject.toml

@@ -0,0 +1,8 @@
+[project]
+name = "example-ai-anthropic"
+version = "0.1.0"
+requires-python = ">=3.10"
+dependencies = [
+    "posthog==7.9.12",
+    "anthropic==0.86.0",
+]

examples/example-ai-anthropic/requirements.txt

@@ -5,9 +5,10 @@ Track Google Gemini API calls with PostHog.
 ## Setup
 
 ```bash
-pip install -r requirements.txt
 cp .env.example .env
 # Fill in your API keys in .env
+# Install uv if you haven't already: https://docs.astral.sh/uv/getting-started/installation/
+uv sync
 ```
 
 ## Examples
@@ -20,7 +21,7 @@ cp .env.example .env
 
 ```bash
 source .env
-python chat.py
-python streaming.py
-python image_generation.py
+uv run python chat.py
+uv run python streaming.py
+uv run python image_generation.py
 ```

examples/example-ai-anthropic/uv.lock

@@ -0,0 +1,8 @@
+[project]
+name = "example-ai-gemini"
+version = "0.1.0"
+requires-python = ">=3.10"
+dependencies = [
+    "posthog==7.9.12",
+    "google-genai==1.68.0",
+]

examples/example-ai-gemini/README.md

@@ -5,15 +5,10 @@ Track LangChain LLM calls with PostHog.
 ## Setup
 
 ```bash
-pip install -r requirements.txt
 cp .env.example .env
 # Fill in your API keys in .env
-```
-
-For the OTEL example, also install:
-
-```bash
-pip install opentelemetry-sdk opentelemetry-exporter-otlp-proto-http
+# Install uv if you haven't already: https://docs.astral.sh/uv/getting-started/installation/
+uv sync
 ```
 
 ## Examples
@@ -25,6 +20,6 @@ pip install opentelemetry-sdk opentelemetry-exporter-otlp-proto-http
 
 ```bash
 source .env
-python callback_handler.py
-python otel.py
+uv run python callback_handler.py
+uv run python otel.py
 ```