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docs/ccxt/wiki/examples/py/instantiate-all-at-once.md

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+- [Instantiate All At Once](./examples/py/)
+
+
+ ```python
+ # -*- coding: utf-8 -*-
+
+import os
+import sys
+
+
+import ccxt  # noqa: E402
+
+exchanges = {}  # a placeholder for your instances
+
+for id in ccxt.exchanges:
+    exchange = getattr(ccxt, id)
+    exchanges[id] = exchange()
+
+# now exchanges dictionary contains all exchange instances...
+exchanges['bittrex'].fetch_order_book('ETH/BTC')
+ 
+```