Merge pull request #405 from doddgray/fix_ipython_filename

Use tempfile if called from IPython

src/kfactory/kcell.py

@@ -7568,6 +7568,7 @@ def show(
             and not the main KCLayout.
     """
     import inspect
+    import tempfile
 
     delete = False
     delete_lyrdb = False
@@ -7577,11 +7578,14 @@ def show(
     try:
         stk = inspect.getouterframes(inspect.currentframe())
         frame = stk[2]
-        name = (
-            Path(frame.filename).stem + "_" + frame.function
-            if frame.function != "<module>"
-            else Path(frame.filename).stem
-        )
+        frame_filename_stem = Path(frame.filename).stem
+        if frame_filename_stem.startswith("<ipython-input"):    # IPython Case
+            name = "ipython"
+        else:                                                   # Normal Python kernel case
+            if frame.function != "<module>":
+                name = frame_filename_stem + "_" + frame.function
+            else:
+                name = frame_filename_stem
     except Exception:
         try:
             from __main__ import __file__ as mf