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docs/ccxt/wiki/examples/py/poloniex-fetch-ohlcv-with-pagination.md

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+- [Poloniex Fetch Ohlcv With Pagination](./examples/py/)
+
+
+ ```python
+ # -*- coding: utf-8 -*-
+
+import os
+import sys
+
+
+import ccxt  # noqa: E402
+
+exchange = ccxt.poloniex()
+exchange.load_markets()
+
+symbol = 'BTC/USDT'
+timeframe = '5m'
+since = exchange.parse8601('2024-01-01T00:00:00Z')
+previous_length = 0
+all_candles = []
+limit = 500
+duration = exchange.parse_timeframe(timeframe) * 1000
+now = exchange.milliseconds()
+
+while since < now:
+    try:
+        print('---------------------------------------------------------------')
+        print('Fetching ohlcvs since', exchange.iso8601(since))
+        endTime = since + duration * limit
+        candles = exchange.fetch_ohlcv(symbol, timeframe, since, limit, {
+            'until': endTime
+        })
+        print('Fetched', len(candles), 'candles')
+        print('From', exchange.iso8601(candles[0][0]), 'to', exchange.iso8601(candles[-1][0]))
+        since = candles[-1][0] + duration
+        all_candles += candles
+        total_length = len(all_candles)
+        print('Fetched', total_length, 'candles in total')
+    except ccxt.NetworkError as e:
+        print(e)  # retry on next iteration
+    except ccxt.ExchangeError as e:
+        print(e)
+        break
+
+print('Fetched', len(all_candles), 'candles since', exchange.iso8601(all_candles[0][0]), 'till', exchange.iso8601(all_candles[-1][0]))
+ 
+```