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Copy-ready Python snippets by topic and difficulty — short, focused, and runnable in the browser editor.
How to Mock OpenTelemetry Tracer Setup in Python
Set up a mock OpenTelemetry tracer with an in-memory span exporter to capture spans for testing and debugging.
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import SimpleSpanProcessor
from opentelemetry.sdk.trace.export.in_memory_span_exporter import InMemorySpanExporter
def setup_tracer():
provider = TracerProvider()
exporter = InMemorySpanExpo…How to Link Parent and Child Span Elements in Python
This code defines a lightweight mock element class and a function that links child elements to a parent when their ranges are nested within the parent's range.
class MockElement:
def __init__(self, name, start, end, children=None):
self.name = name
self.start = start
self.end = end
self.children = children or []
def __repr__(self):
return f"MockElement({self.name}, {self.start}-{self.end})"
def link_parent_child(parent, chil…How to Mock an OTLP HTTP Endpoint in Python
This code implements a lightweight HTTP server that accepts OTLP/HTTP trace exports, stores spans by trace ID, and exposes them via a simple GET endpoint for debugging.
import json
from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
from collections import defaultdict
class TraceHandler(BaseHTTPRequestHandler):
traces = defaultdict(list)
def do_POST(self):
if self.path == "/v1/traces":
length = int(self.headers.get("Content-Length", 0))
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Guide: free Python code samples library
Copy-ready Python snippets for learners and developers
PythonSkillset code samples are short, focused examples organised by topic and difficulty. Every snippet is server-rendered HTML — readable by search engines and easy to copy. Open any sample, read the notes, copy the code, then press Try in editor to run it in the browser with Pyodide.
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- Pick a topic section — strings, lists, files, functions, and more
- Open a sample, read How it works, and copy the code block
- Run it in the IDE, tweak values, then take a related quiz or tutorial lesson
Samples vs tutorials and challenges
Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.