Use build_args for download script

freqtrade/arguments.py

@@ -351,7 +351,7 @@ ARGS_EDGE = ARGS_COMMON_OPTIMIZE + ["stoploss_range"]
 
 ARGS_LIST_EXCHANGE = ["print_one_column"]
 
-ARGS_DOWNLOADER = ["pairs", "pairs_file", "days", "exchange", "timeframes", "erase"]
+ARGS_DOWNLOADER = ARGS_COMMON + ["pairs", "pairs_file", "days", "exchange", "timeframes", "erase"]
 
 ARGS_PLOT_DATAFRAME = (ARGS_COMMON + ARGS_STRATEGY +
                        ["pairs", "indicators1", "indicators2", "plot_limit", "db_url", "trade_source",

freqtrade/tests/test_arguments.py

@@ -3,7 +3,7 @@ import argparse
 
 import pytest
 
-from freqtrade.arguments import Arguments, TimeRange, check_int_positive
+from freqtrade.arguments import Arguments, TimeRange, check_int_positive, ARGS_DOWNLOADER
 
 
 # Parse common command-line-arguments. Used for all tools
@@ -178,8 +178,8 @@ def test_download_data_options() -> None:
         '--exchange', 'binance'
     ]
     arguments = Arguments(args, '')
-    arguments.common_options()
-    arguments.download_data_options()
+    arguments.build_args(ARGS_DOWNLOADER)
+
     args = arguments.parse_args()
     assert args.pairs_file == 'file_with_pairs'
     assert args.datadir == 'datadir/folder'

scripts/download_backtest_data.py

@@ -8,7 +8,7 @@ import sys
 from pathlib import Path
 from typing import Any, Dict, List
 
-from freqtrade.arguments import Arguments, TimeRange
+from freqtrade.arguments import Arguments, TimeRange, ARGS_DOWNLOADER
 from freqtrade.configuration import Configuration
 from freqtrade.data.history import download_pair_history
 from freqtrade.exchange import Exchange
@@ -21,8 +21,7 @@ logger = logging.getLogger('download_backtest_data')
 DEFAULT_DL_PATH = 'user_data/data'
 
 arguments = Arguments(sys.argv[1:], 'Download backtest data')
-arguments.common_options()
-arguments.download_data_options()
+arguments.build_args(ARGS_DOWNLOADER)
 
 # Do not read the default config if config is not specified
 # in the command line options explicitely