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ritmex-bot/docs/ccxt/wiki/examples/py/poloniex-fetch-order-books.md
2025-10-03 15:28:16 +08:00

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- [Poloniex Fetch Order Books](./examples/py/)
```python
# -*- coding: utf-8 -*-
import os
import sys
from pprint import pprint
import ccxt # noqa: E402
id = 'poloniex'
# instantiate the exchange by id
exchange = getattr(ccxt, id)({
# 'proxy':'https://cors-anywhere.herokuapp.com/',
})
# load all markets from the exchange
markets = exchange.load_markets()
# this will work (a limited number of symbols)
result = exchange.fetch_order_books(['ETH/BTC', 'LTC/BTC'])
pprint(result)
# this will also work (a limited number of symbols)
result = exchange.fetch_order_books(exchange.symbols[0:10])
pprint(result)
# this will not work (too many symbols)
result = exchange.fetch_order_books(exchange.symbols)
pprint(result)
```