checking lines array length

ulises-blacklane · sebastinas · commit 87a85dff224b · 2021-09-25T12:46:47.000+02:00
diff --git a/bpython/curtsiesfrontend/repl.py b/bpython/curtsiesfrontend/repl.py
@@ -1004,9 +1004,9 @@ def send_session_to_external_editor(self, filename=None):
             )
             return
         lines = text.split("\n")
-        if not lines[-1].strip():
+        if len(lines) and not lines[-1].strip():
             lines.pop()  # strip last line if empty
-        if lines[-1].startswith("### "):
+        if len(lines) and lines[-1].startswith("### "):
             current_line = lines[-1][4:]
         else:
             current_line = ""
