Add Local .json file Loading

freqtrade/plugins/pairlist/RemotePairList.py

@@ -5,6 +5,7 @@ Provides pair list fetched from a remote source
 """
 import json
 import logging
+from pathlib import Path
 from typing import Any, Dict, List
 
 import requests
@@ -110,14 +111,29 @@ class RemotePairList(IPairList):
         :param tickers: Tickers (from exchange.get_tickers). May be cached.
         :return: List of pairs
         """
+
+        time_elapsed = 0
         pairlist = self._pair_cache.get('pairlist')
 
         if pairlist:
             # Item found - no refresh necessary
             return pairlist.copy()
+        else:
+            if self._pairlist_url.startswith("file:///"):
+                filename = self._pairlist_url.split("file:///", 1)[1]
+                file_path = Path(filename)
+
+                if file_path.exists():
+                    with open(filename) as json_file:
+                        # Load the JSON data into a dictionary
+                        jsonp = json.load(json_file)
+                        plist = jsonp['pairs']
+                else:
+                    raise ValueError(f"{self._pairlist_url} does not exist.")
             else:
                 # Fetch Pairlist from Remote URL
                 plist, time_elapsed, info = self.fetch_pairlist()
+
         pairlist = []
 
         for i in plist: