adds streamlit demo

Author: Sebastian Muthwill

streamlit/app.py

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+import time  # to simulate a real time data, time loop
+
+import numpy as np  # np mean, np random
+import pandas as pd  # read csv, df manipulation
+import plotly.express as px  # interactive charts
+import streamlit as st  # 🎈 data web app development
+
+# PyGWalker 
+
+st.set_page_config(
+    page_title="Real-Time Data Science Dashboard",
+    page_icon="✅",
+    layout="wide",
+)
+
+# read csv from a github repo
+dataset_url = "https://raw.githubusercontent.com/Lexie88rus/bank-marketing-analysis/master/bank.csv"
+
+# read csv from a URL
+@st.cache_data
+def get_data() -> pd.DataFrame:
+    return pd.read_csv(dataset_url)
+
+df = get_data()
+
+# dashboard title
+
+with st.sidebar:
+    st.write("Demo Streamlit APP v0.0.1")
+        
+st.markdown("### Deploy Apps faster with Python!")
+st.title("Real-Time Demo with Streamlit")
+camera_button_disabled = False
+
+camera_button = st.button("Take picture", disabled=camera_button_disabled )
+    
+if camera_button:
+    camera = st.camera_input(label="Make a picture", disabled=camera_button_disabled)
+
+if camera_button:
+    camera_button_disabled = True
+    st.write(camera_button)
+    if camera:
+        st.image(camera)
+else:
+    st.write(camera_button)
+
+
+st.divider()
+
+# top-level filters
+job_filter = st.selectbox("Select the Job", pd.unique(df["job"]))
+
+# creating a single-element container
+placeholder = st.empty()
+
+# dataframe filter
+df = df[df["job"] == job_filter]
+
+# near real-time / live feed simulation
+for seconds in range(200):
+
+    df["age_new"] = df["age"] * np.random.choice(range(1, 5))
+    df["balance_new"] = df["balance"] * np.random.choice(range(1, 5))
+
+    # creating KPIs
+    avg_age = np.mean(df["age_new"])
+
+    count_married = int(
+        df[(df["marital"] == "married")]["marital"].count()
+        + np.random.choice(range(1, 30))
+    )
+
+    balance = np.mean(df["balance_new"])
+
+    with placeholder.container():
+
+        # create three columns
+        kpi1, kpi2, kpi3 = st.columns(3)
+
+        # fill in those three columns with respective metrics or KPIs
+        kpi1.metric(
+            label="Age ⏳",
+            value=round(avg_age),
+            delta=round(avg_age) - 10,
+        )
+        
+        kpi2.metric(
+            label="Married Count 💍",
+            value=int(count_married),
+            delta=-10 + count_married,
+        )
+        
+        kpi3.metric(
+            label="A/C Balance ＄",
+            value=f"$ {round(balance,2)} ",
+            delta=-round(balance / count_married) * 100,
+        )
+
+        # create two columns for charts
+        fig_col1, fig_col2 = st.columns(2)
+        with fig_col1:
+            st.markdown("### First Chart")
+            fig = px.density_heatmap(
+                data_frame=df, y="age_new", x="marital"
+            )
+            st.write(fig)
+            
+        with fig_col2:
+            st.markdown("### Second Chart")
+            fig2 = px.histogram(data_frame=df, x="age_new")
+            st.write(fig2)
+
+        st.markdown("### Detailed Data View")
+        st.dataframe(df)
+        time.sleep(1)

streamlit/pages/1_About.py

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+import streamlit as st
+
+st.title("About this App")
+
+"This app is created with ❤ and ☕ by Sebastian"

streamlit/requirements.txt

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+streamlit
+plotly
+pandas
+numpy