Add Rich Progressbar Wrapper

freqtrade/util/rich_progress.py

@@ -0,0 +1,27 @@
+import logging
+import sys
+from contextlib import contextmanager
+
+from rich.progress import Progress
+
+
+@contextmanager
+def FtProgress(*args, **kwargs):
+    """
+    Wrapper around rich.progress.Progress to fix issues with logging.
+    """
+    try:
+        __logger = kwargs.pop('logger', None)
+        streamhandlers = [x for x in __logger.root.handlers if type(x) == logging.StreamHandler]
+        __prior_stderr = []
+
+        with Progress(*args, **kwargs) as progress:
+            for handler in streamhandlers:
+                __prior_stderr.append(handler.stream)
+                handler.setStream(sys.stderr)
+
+            yield progress
+
+    finally:
+        for idx, handler in  enumerate(streamhandlers):
+            handler.setStream(__prior_stderr[idx])