re-added make_hbox for show_palette

src/pytti/update_func.py

@@ -34,6 +34,34 @@
 OUTPATH = f"{os.getcwd()}/images_out"
 
 
+def make_hbox(im, fig):
+    # https://stackoverflow.com/questions/51315566/how-to-display-the-images-side-by-side-in-jupyter-notebook/51316108
+    import io
+    import ipywidgets as widgets
+    from ipywidgets import Layout
+
+    with io.BytesIO() as buf:
+        im.save(buf, format="png")
+        buf.seek(0)
+        wi1 = widgets.Image(
+            value=buf.read(),
+            format="png",
+            layout=Layout(border="0", margin="0", padding="0"),
+        )
+    with io.BytesIO() as buf:
+        fig.savefig(buf, format="png", bbox_inches="tight")
+        buf.seek(0)
+        wi2 = widgets.Image(
+            value=buf.read(),
+            format="png",
+            layout=Layout(border="0", margin="0", padding="0"),
+        )
+    return widgets.HBox(
+        [wi1, wi2],
+        layout=Layout(border="0", margin="0", padding="0", align_items="flex-start"),
+    )
+
+
 # Update is called each step.
 def update(
     model,
@@ -140,9 +168,9 @@ def save_out(
                 # delete the file. if file not found, nothing happens.
                 if fpath.exists():
                     fpath.unlink()
-                #fpath.unlink(
+                # fpath.unlink(
                 #    missing_ok=True
-                #)
+                # )
 
     j = i + 1