FIx loading pairs-list

freqtrade/configuration/configuration.py

@@ -346,9 +346,8 @@ class Configuration(object):
             # or if pairs file is specified explicitely
             if not pairs_file.exists():
                 raise OperationalException(f'No pairs file found with path "{pairs_file}".')
-
-            config['pairs'] = json_load(pairs_file)
-
+            with pairs_file.open('r') as f:
+                config['pairs'] = json_load(f)
                 config['pairs'].sort()
             return
 
@@ -357,7 +356,10 @@ class Configuration(object):
             config['pairs'] = config.get('exchange', {}).get('pair_whitelist')
         else:
             # Fall back to /dl_path/pairs.json
-            pairs_file = Path(config['datadir']) / "pairs.json"
+            pairs_file = Path(config['datadir']) / config['exchange']['name'].lower() / "pairs.json"
+            print(config['datadir'])
             if pairs_file.exists():
-                config['pairs'] = json_load(pairs_file)
+                with pairs_file.open('r') as f:
+                    config['pairs'] = json_load(f)
+                if 'pairs' in config:
                     config['pairs'].sort()

freqtrade/misc.py

@@ -6,6 +6,7 @@ import logging
 import re
 from datetime import datetime
 from pathlib import Path
+from typing.io import IO
 
 import numpy as np
 import rapidjson
@@ -60,7 +61,7 @@ def file_dump_json(filename: Path, data, is_zip=False) -> None:
     logger.debug(f'done json to "{filename}"')
 
 
-def json_load(datafile):
+def json_load(datafile: IO):
     """
     load data with rapidjson
     Use this to have a consistent experience,