docs: add thinking examples

Author: RobertCraigie

examples/thinking.py

@@ -0,0 +1,16 @@
+import anthropic
+
+client = anthropic.Anthropic()
+
+response = client.messages.create(
+    model="claude-3-7-sonnet-20250219",
+    max_tokens=3200,
+    thinking={"type": "enabled", "budget_tokens": 1600},
+    messages=[{"role": "user", "content": "Create a haiku about Anthropic."}],
+)
+
+for block in response.content:
+    if block.type == "thinking":
+        print(f"Thinking: {block.thinking}")
+    elif block.type == "text":
+        print(f"Text: {block.text}")

examples/thinking_stream.py

@@ -0,0 +1,25 @@
+import anthropic
+
+client = anthropic.Anthropic()
+
+with client.messages.stream(
+    model="claude-3-7-sonnet-20250219",
+    max_tokens=3200,
+    thinking={"type": "enabled", "budget_tokens": 1600},
+    messages=[{"role": "user", "content": "Create a haiku about Anthropic."}],
+) as stream:
+    thinking = "not-started"
+
+    for event in stream:
+        if event.type == "thinking":
+            if thinking == "not-started":
+                print("Thinking:\n---------")
+                thinking = "started"
+
+            print(event.thinking, end="", flush=True)
+        elif event.type == "text":
+            if thinking != "finished":
+                print("\n\nText:\n-----")
+                thinking = "finished"
+
+            print(event.text, end="", flush=True)