Enhance formatting, Add pair filter

docs/data-download.md

@@ -166,6 +166,7 @@ You can get a list of downloaded data using the `list-data` subcommand.
 usage: freqtrade list-data [-h] [-v] [--logfile FILE] [-V] [-c PATH] [-d PATH]
                            [--userdir PATH] [--exchange EXCHANGE]
                            [--data-format-ohlcv {json,jsongz}]
+                           [-p PAIRS [PAIRS ...]]
 
 optional arguments:
   -h, --help            show this help message and exit
@@ -174,6 +175,9 @@ optional arguments:
   --data-format-ohlcv {json,jsongz}
                         Storage format for downloaded candle (OHLCV) data.
                         (default: `json`).
+  -p PAIRS [PAIRS ...], --pairs PAIRS [PAIRS ...]
+                        Show profits for only these pairs. Pairs are space-
+                        separated.
 
 Common arguments:
   -v, --verbose         Verbose mode (-vv for more, -vvv to get all messages).
@@ -190,7 +194,6 @@ Common arguments:
                         Path to directory with historical backtesting data.
   --userdir PATH, --user-data-dir PATH
                         Path to userdata directory.
-
 ```
 
 #### Example list-data

freqtrade/commands/arguments.py

@@ -54,7 +54,7 @@ ARGS_BUILD_HYPEROPT = ["user_data_dir", "hyperopt", "template"]
 ARGS_CONVERT_DATA = ["pairs", "format_from", "format_to", "erase"]
 ARGS_CONVERT_DATA_OHLCV = ARGS_CONVERT_DATA + ["timeframes"]
 
-ARGS_LIST_DATA = ["exchange", "dataformat_ohlcv"]
+ARGS_LIST_DATA = ["exchange", "dataformat_ohlcv", "pairs"]
 
 ARGS_DOWNLOAD_DATA = ["pairs", "pairs_file", "days", "download_trades", "exchange",
                       "timeframes", "erase", "dataformat_ohlcv", "dataformat_trades"]

freqtrade/commands/data_commands.py

@@ -105,10 +105,14 @@ def start_list_data(args: Dict[str, Any]) -> None:
 
     paircombs = dhc.ohlcv_get_available_data(config['datadir'])
 
+    if args['pairs']:
+        paircombs = [comb for comb in paircombs if comb[0] in args['pairs']]
+
     print(f"Found {len(paircombs)} pair / timeframe combinations.")
     groupedpair = defaultdict(list)
     for pair, timeframe in sorted(paircombs, key=lambda x: (x[0], timeframe_to_minutes(x[1]))):
         groupedpair[pair].append(timeframe)
 
     print(tabulate([(pair, ', '.join(timeframes)) for pair, timeframes in groupedpair.items()],
-                   headers=("pairs", "timeframe")))
+                   headers=("Pair", "Timeframe"),
+                   tablefmt='psql', stralign='right'))

tests/commands/test_commands.py

@@ -1056,8 +1056,25 @@ def test_start_list_data(testdatadir, capsys):
     start_list_data(pargs)
     captured = capsys.readouterr()
     assert "Found 16 pair / timeframe combinations." in captured.out
-    assert "\npairs         timeframe\n" in captured.out
+    assert "\n|         Pair |       Timeframe |\n" in captured.out
-    assert "\nUNITTEST/BTC  1m, 5m, 8m, 30m\n" in captured.out
+    assert "\n| UNITTEST/BTC | 1m, 5m, 8m, 30m |\n" in captured.out
+
+    args = [
+        "list-data",
+        "--data-format-ohlcv",
+        "json",
+        "--pairs", "XRP/ETH",
+        "--datadir",
+        str(testdatadir),
+    ]
+    pargs = get_args(args)
+    pargs['config'] = None
+    start_list_data(pargs)
+    captured = capsys.readouterr()
+    assert "Found 2 pair / timeframe combinations." in captured.out
+    assert "\n|    Pair |   Timeframe |\n" in captured.out
+    assert "UNITTEST/BTC" not in captured.out
+    assert "\n| XRP/ETH |      1m, 5m |\n" in captured.out
 
 
 @pytest.mark.usefixtures("init_persistence")