Minor cleanup

src/chatdbg/chatdbg_why.py

@@ -1,4 +1,5 @@
 import os
+import sys
 
 import llm_utils
 import openai
@@ -13,14 +14,11 @@ def why(self, arg):
     stack_trace = ""
     stack_frames = len(self.stack)
     try:
-        import sys
-
         exception_name = sys.exc_info()[0].__name__
         exception_value = sys.exc_info()[1]
     except:
-        print(
-            "The command 'why' only works when there is an uncaught exception. Try running 'python3 -m chatdbg -c continue'."
-        )
+        print("The command 'why' only works when there is an uncaught exception.")
+        print(" Try running 'python3 -m chatdbg -c continue'.")
         return
     for frame_lineno in self.stack:
         import inspect