added tox flake8 cd .. and python bitfinex example

Author: kroitor

examples/py/fetch-bitfinex-ohlcv-history.py

@@ -0,0 +1,61 @@
+# -*- coding: utf-8 -*-
+
+import os
+import sys
+import time
+
+# -----------------------------------------------------------------------------
+
+root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.path.append(root + '/python')
+
+# -----------------------------------------------------------------------------
+
+import ccxt  # noqa: E402
+
+# -----------------------------------------------------------------------------
+# common constants
+
+msec = 1000
+minute = 60 * msec
+hold = 30
+
+# -----------------------------------------------------------------------------
+
+exchange = ccxt.bitfinex({
+    'rateLimit': 3000,
+    'enableRateLimit': True,
+    # 'verbose': True,
+})
+
+# -----------------------------------------------------------------------------
+
+from_datetime = '2017-01-01 00:00:00'
+from_timestamp = exchange.parse8601(from_datetime)
+
+# -----------------------------------------------------------------------------
+
+now = exchange.milliseconds()
+
+# -----------------------------------------------------------------------------
+
+data = []
+
+while from_timestamp < now:
+
+    try:
+
+        print(exchange.milliseconds(), 'Fetching candles starting from', exchange.iso8601(from_timestamp))
+        ohlcvs = exchange.fetch_ohlcv('BTC/USD', '1m', from_timestamp)
+        print(exchange.milliseconds(), 'Fetched', len(ohlcvs), 'candles')
+        first = ohlcvs[0][0]
+        last = ohlcvs[-1][0]
+        print('First candle epoch', first, exchange.iso8601(first))
+        print('Last candle epoch', last, exchange.iso8601(last))
+        from_timestamp += len(ohlcvs) * minute
+        data += ohlcvs
+
+    except (ccxt.ExchangeError, ccxt.AuthenticationError, ccxt.ExchangeNotAvailable, ccxt.RequestTimeout) as error:
+
+        print('Got an error', type(error).__name__, error.args, ', retrying in', hold, 'seconds...')
+        time.sleep(hold)

python/tox.ini

@@ -11,6 +11,7 @@ commands =
 
 [testenv:qa]
 basepython = python3
+changedir=..
 commands = flake8
 deps = .[qa]
 

setup.cfg

@@ -0,0 +1,17 @@
+[flake8]
+ignore = E501
+exclude =
+    .ropeproject,
+    .tox,
+    .eggs,
+    # No need to traverse our git directory
+    .git,
+    # There's no value in checking cache directories
+    __pycache__,
+    # Other special cases
+    node_modules,
+    .nyc_output,
+    build,
+    tmp,
+    # No need to check the basecode
+    ccxt.py