Improve code quality

tests/data/test_btanalysis.py

@@ -98,7 +98,7 @@ def test_load_backtest_data_new_format(testdatadir):
     assert bt_data.equals(bt_data3)
 
     with pytest.raises(ValueError, match=r"File .* does not exist\."):
-        load_backtest_data(str("filename") + "nofile")
+        load_backtest_data("filename" + "nofile")
 
     with pytest.raises(ValueError, match=r"Unknown dataformat."):
         load_backtest_data(testdatadir / "backtest_results" / LAST_BT_RESULT_FN)

tests/data/test_history.py

@@ -409,7 +409,7 @@ def test_init_with_refresh(default_conf, mocker) -> None:
 
 
 def test_file_dump_json_tofile(testdatadir) -> None:
-    file = testdatadir / 'test_{id}.json'.format(id=str(uuid.uuid4()))
+    file = testdatadir / f'test_{uuid.uuid4()}.json'
     data = {'bar': 'foo'}
 
     # check the file we will create does not exist

tests/optimize/test_optimize_reports.py

@@ -236,7 +236,7 @@ def test_store_backtest_candles(testdatadir, mocker):
 
     assert dump_mock.call_count == 1
     assert isinstance(dump_mock.call_args_list[0][0][0], Path)
-    assert str(dump_mock.call_args_list[0][0][0]).endswith(str('_signals.pkl'))
+    assert str(dump_mock.call_args_list[0][0][0]).endswith('_signals.pkl')
 
     dump_mock.reset_mock()
     # mock file exporting
@@ -245,7 +245,7 @@ def test_store_backtest_candles(testdatadir, mocker):
     assert dump_mock.call_count == 1
     assert isinstance(dump_mock.call_args_list[0][0][0], Path)
     # result will be testdatadir / testresult-<timestamp>_signals.pkl
-    assert str(dump_mock.call_args_list[0][0][0]).endswith(str('_signals.pkl'))
+    assert str(dump_mock.call_args_list[0][0][0]).endswith('_signals.pkl')
     dump_mock.reset_mock()
 
 

tests/rpc/test_rpc_telegram.py

@@ -652,7 +652,7 @@ def test_monthly_handle(default_conf_usdt, update, ticker, fee, mocker, time_mac
 
     # The one-digit months should contain a zero, Eg: September 2021 = "2021-09"
     # Since we loaded the last 12 months, any month should appear
-    assert str('-09') in msg_mock.call_args_list[0][0][0]
+    assert '-09' in msg_mock.call_args_list[0][0][0]
 
     # Try invalid data
     msg_mock.reset_mock()
@@ -671,7 +671,7 @@ def test_monthly_handle(default_conf_usdt, update, ticker, fee, mocker, time_mac
     context = MagicMock()
     context.args = ["february"]
     telegram._monthly(update=update, context=context)
-    assert str('Monthly Profit over the last 6 months</b>:') in msg_mock.call_args_list[0][0][0]
+    assert 'Monthly Profit over the last 6 months</b>:' in msg_mock.call_args_list[0][0][0]
 
 
 def test_profit_handle(default_conf_usdt, update, ticker_usdt, ticker_sell_up, fee,
@@ -1730,14 +1730,14 @@ def test_version_handle(default_conf, update, mocker) -> None:
 
     telegram._version(update=update, context=MagicMock())
     assert msg_mock.call_count == 1
-    assert '*Version:* `{}`'.format(__version__) in msg_mock.call_args_list[0][0][0]
+    assert f'*Version:* `{__version__}`' in msg_mock.call_args_list[0][0][0]
 
     msg_mock.reset_mock()
     freqtradebot.strategy.version = lambda: '1.1.1'
 
     telegram._version(update=update, context=MagicMock())
     assert msg_mock.call_count == 1
-    assert '*Version:* `{}`'.format(__version__) in msg_mock.call_args_list[0][0][0]
+    assert f'*Version:* `{__version__}`' in msg_mock.call_args_list[0][0][0]
     assert '*Strategy version: * `1.1.1`' in msg_mock.call_args_list[0][0][0]
 
 

tests/strategy/test_strategy_loading.py

@@ -69,7 +69,7 @@ def test_load_strategy(default_conf, dataframe_1m):
 def test_load_strategy_base64(dataframe_1m, caplog, default_conf):
     filepath = Path(__file__).parents[2] / 'freqtrade/templates/sample_strategy.py'
     encoded_string = urlsafe_b64encode(filepath.read_bytes()).decode("utf-8")
-    default_conf.update({'strategy': 'SampleStrategy:{}'.format(encoded_string)})
+    default_conf.update({'strategy': f'SampleStrategy:{encoded_string}'})
 
     strategy = StrategyResolver.load_strategy(default_conf)
     assert 'rsi' in strategy.advise_indicators(dataframe_1m, {'pair': 'ETH/BTC'})