Merging PR_218 openai_rev package with new streamlit chat app

venv/lib/python3.9/site-packages/altair/examples/connected_scatterplot.py

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+"""
+Connected Scatterplot (Lines with Custom Paths)
+-----------------------------------------------
+
+This example show how the order encoding can be used to draw a custom path. The dataset tracks miles driven per capita along with gas prices annually from 1956 to 2010.
+It is based on Hannah Fairfield's article 'Driving Shifts Into Reverse'. See https://archive.nytimes.com/www.nytimes.com/imagepages/2010/05/02/business/02metrics.html for the original.
+"""
+# category: scatter plots
+import altair as alt
+from vega_datasets import data
+
+source = data.driving()
+
+alt.Chart(source).mark_line(point=True).encode(
+    alt.X('miles', scale=alt.Scale(zero=False)),
+    alt.Y('gas', scale=alt.Scale(zero=False)),
+    order='year'
+)