Simplify template app

Author: wch

shiny/examples/template/app.py

@@ -1,22 +1,17 @@
-import matplotlib.pyplot as plt
-import numpy as np
 from shiny import App, render, ui
 
-# Generate some random numbers
-data_x = np.random.standard_normal(400)
-data_y = np.random.standard_normal(400)
-
 app_ui = ui.page_fluid(
-    ui.input_slider("n", "Number of points", min=10, max=400, value=50, step=10),
-    ui.output_plot("scatter_plot"),
+    ui.h2("Hello Shiny!"),
+    ui.input_slider("n", "N", 0, 100, 20),
+    ui.output_text_verbatim("txt"),
 )
 
 
 def server(input, output, session):
     @output
-    @render.plot
-    def scatter_plot():
-        return plt.scatter(data_x[: input.n()], data_y[: input.n()])
+    @render.text
+    def txt():
+        return f"n*2 is {input.n() * 2}"
 
 
 app = App(app_ui, server)