Added streamlit example for 03_05

Author: saberry

code/chapter_03_video_05.py

@@ -0,0 +1,28 @@
+import matplotlib.pyplot as plt
+import numpy as np
+import pandas as pd
+import seaborn as sns
+import streamlit as st
+
+# First, we'll load our level up data.
+employees = pd.read_csv('../data/level_up_data.csv')
+
+employee_numeric = employees.select_dtypes(include = np.number)
+
+st.title('Visualizing Employee Data')
+
+st.sidebar.title('Select your visualization variables')
+
+# We will let users select 2 variables to visualize.
+viz_variables = st.sidebar.multiselect(
+  'Select variables to visualize',
+  employee_numeric.columns,
+  max_selections = 2
+)
+
+color_variables = st.sidebar.selectbox(
+  'Select variable for color',
+  employee_numeric.columns
+)
+
+st.scatter_chart(employee_numeric, x = viz_variables[0], y = viz_variables[1], color=color_variables)