chore: improved fix for terminal error

freqtrade/optimize/hyperopt_output.py

@@ -59,7 +59,8 @@ class HyperoptOutput:
 
         max_rows: Optional[int] = None
 
-        if self._streaming and "pytest" not in sys.modules:
+        if self._streaming:
+            try:
                 ts = get_terminal_size()
                 # Get terminal size.
                 # Account for header, borders, and for the progress bar.
@@ -70,6 +71,9 @@ class HyperoptOutput:
                     max_rows = -(int(ts.lines / 2) - 6)
                 else:
                     max_rows = -(ts.lines - 6)
+            except OSError:
+                # If we can't get the terminal size, we will just display the last 10 rows.
+                pass
 
         self.__init_table()
         for r in self._results[max_rows:]: