Polygon Python Client - WebSocket & RESTful APIs

Python client for the Polygon.io API.

Install

pip install polygon-api-client

Requires Python >= 3.8.

Getting started

See the Getting Started section in our docs or view the examples directory for additional examples.

REST API Client

Import the RESTClient.

from polygon import RESTClient

Create a new client with your API key

client = RESTClient(api_key="<API_KEY>")

Using the Client

Request data using client methods.

ticker = "AAPL"

# List Aggregates (Bars)
bars = client.get_aggs(ticker=ticker, multiplier=1, timespan="day", from_="2023-01-09", to="2023-01-10")
for bar in bars:
    print(bar)

# Get Last Trade
trade = client.get_last_trade(ticker=ticker)
print(trade)

# List Trades
trades = client.list_trades(ticker=ticker, timestamp="2022-01-04")
for trade in trades:
    print(trade)

# Get Last Quote
quote = client.get_last_quote(ticker=ticker)
print(quote)

# List Quotes
quotes = client.list_quotes(ticker=ticker, timestamp="2022-01-04")
for quote in quotes:
    print(quote)

Note: For parameter argument examples check out our docs. All required arguments are annotated with red asterisks " * " and argument examples are set. Check out an example for Aggregates(client.get_aggs) here

WebSocket Client

Import classes

from polygon import WebSocketClient
from polygon.websocket.models import WebSocketMessage
from typing import List

Using the client

Create a new client with your API key and subscription options.

# Note: Multiple subscriptions can be added to the array 
# For example, if you want to subscribe to AAPL and META,
# you can do so by adding "T.META" to the subscriptions array. ["T.AAPL", "T.META"]
# If you want to subscribe to all tickers, place an asterisk in place of the symbol. ["T.*"]
ws = WebSocketClient(api_key=<API_KEY>, subscriptions=["T.AAPL"])

Create a handler function and run the WebSocket.

def handle_msg(msg: List[WebSocketMessage]):
    for m in msg:
        print(m)

ws.run(handle_msg=handle_msg)

Check out more detailed examples here.

Launchpad

Users of the Launchpad product will need to pass in certain headers in order to make API requests using the RequestOptionBuilder. Example can be found here.

Import classes

from polygon import RESTClient
from polygon.rest.models.request import RequestOptionBuilder

Using the client

Create client and set options

# create client
c = RESTClient(api_key="API_KEY")

# create request options
options = RequestOptionBuilder().edge_headers(
    edge_id="YOUR_EDGE_ID",  # required
    edge_ip_address="IP_ADDRESS",  # required
)

Request data using client methods.

# get response
res = c.get_aggs("AAPL", 1, "day", "2022-04-04", "2022-04-04", options=options)

# do something with response

Checkout Launchpad readme for more details on RequestOptionBuilder here

Contributing

If you found a bug or have an idea for a new feature, please first discuss it with us by submitting a new issue. We will respond to issues within at most 3 weeks. We're also open to volunteers if you want to submit a PR for any open issues but please discuss it with us beforehand. PRs that aren't linked to an existing issue or discussed with us ahead of time will generally be declined. If you have more general feedback or want to discuss using this client with other users, feel free to reach out on our Slack channel.

Development

If you plan to contribute by developing new features then you will need to install certain dependencies.

Poetry

Poetry is a packaging and dependency manager for Python. Installation instructions can be found on their website. Once installed run poetry install to install the required dependencies. This step should be run after incorporating new upstream changes.

Makefile

Our Makefile has the common operations needed when developing on this repo. Running tests and linting can both be run through our Makefile. Just run make help to see the list of available commands.

Release planning

This client will attempt to follow the release cadence of our API. When endpoints are deprecated and newer versions are added, the client will maintain two methods in a backwards compatible way (e.g. list_trades and list_trades_v4(...)). When deprecated endpoints are removed from the API, we'll rename the versioned method (e.g. list_trades_v4(...) -> list_trades(...)), remove the old method, and release a new major version of the client.

The goal is to give users ample time to upgrade to newer versions of our API before we bump the major version of the client, and in general, we'll try to bundle breaking changes like this to avoid frequent major version bumps.

Exceptions to this are:

• Methods under client.vx. These are expiremental.
• Methods that start with _*. We use these internally.
• Type annotations. We may modify these based on our JSON responses.
• We may add model fields.