Intro to Stramlit

Streamlit is an opensource app framework for Machine Leaning and Data Science projects. It Allows you to create beautiful web applications for your achine leaning and data science projects with simple python scrips.

• A Faster wav to build and share data apps

• Purealy based on python

we are write code 2 types

1. Inpretive code
2. Declarative code:- eg yaml, tom

• declartiver not reqired html, css, js

To Display messages

import streamlit as st

st.title("Hello Chat App")
st.subheader("Brewed with streamlit")
st.text("Welcome to your first application")
st.write("choose your fav variety of chai")

output

For title

st.title("hello title")

To display a sample text

st.write("This is sample text!!")

How to run streamlit application

streamlit run app.py

Select box

chai = st.selectbox("Your fav  chai: ", ["Masala chai", "Lemon Tea", "Adrak chai", "kesar Chai"])

st.write(f"Your choose {chai}. Excellent choise")
st.success("Your chai has been brewed!")

output

conditional

if with success msg

import streamlit as st

st.title("Cahi Maker App")

if st.button("Make Chai"):
    st.success("Your chai is being brewed")

Output:

check box

add_masala = st.checkbox("Add Masala")

if add_masala:
    st.write("Masala added to your chai")

radio button

tea_type = st.radio("Pick your chai base: ", ["Milk", "Water", "Almond Milk"])

st.write(f"Select base {tea_type}")

select and slider

flavour = st.selectbox("Choose flavour ", ["Adrak", "Kesar", "Tulsi"] )

sugar = st.slider("Sugar level", 0, 5, 2)

output

numbers

cups = st.number_input("How many cups", min_value=1, max_value=10, step=2)
st.write(f"Selected sugar level {cups}")

input

name = st.text_input("Plz ender your name")

if name:
    st.write(f"We {name}, Your chai is on the way")

dob = st.date_input("Select your date of birth")
st.write(f"Your date of birth {dob}")

plit the page

import streamlit as st

col1, col2 = st.columns(2)

with col1:
    st.header("Masala Chai")

    vote1 = st.button("Vote Masala Chai")

with col2:
    st.header("Adrak Chai")
    vote2 = st.button("Vote Adrak Chai")

if vote1:
    st.success("Thanks for voting masala chai")

elif vote2:
    st.success("Thanks for voting Adrak Chai")

with col2:
    st.header("Adrak Chai")
    st.image("https://images.pexels.com/photos/28052357/pexels-photo-28052357.jpeg", width=200)
    vote2 = st.button("Vote Adrak Chai")

sidebar

name = st.sidebar.text_input("Enter your name")
tea = st.sidebar.selectbox("Choose your chai", ["Masala", "kesae", "Adrak"])

st.write(f"Welcome {name} and your {tea} chai is getting ready")

Expander

with st.expander("show chai Making Instructions"):
    st.write(
        """
             1. Boil water with tea leaves
             2. Add milk and spices
             3. Serve hot
        """
    )

makdow

st.markdown("""
            ## test

            > new row
            """)

file upload

import streamlit as st
import pandas as pd

st.title("Chai Sale Dashboard")

file = st.file_uploader("Upload your csv file", type=['csv'])

if file:
    df = pd.read_csv(file)
    st.subheader("Data Preview")
    st.dataframe(df)

if file:
    st.subheader("Summary Stats")
    st.write(df.describe())

filter data

if file:
    cities = df["city"].unique()
    selected_city = st.selectbox("Filter  by cites", cities)


    filtered_data = df[df["city"] == selected_city]
    st.dataframe(filtered_data)

Display the Dataframe

Create a simple Dataframe

df = pd.DataFrame({
    "first column": [1,2,3,4],
    "secound coulmn": [10,20,30,40]
})

st.write("Here is the dataframe")
st.write(df)

Create a line chart

chart_data = pd.DataFrame(
    np.random.randn(10,3), columns = ['a','b','c']
)

st.line_chart(chart_data)

Happ Birthday

st.title("Happy Birthday!!")

st.balloons()

One line code display

st.text("Display Row Code")
st.code("import numpy as np")

Display row code with dataframe

with st.echo():
    import pandas as pd
    df = pd.DataFrame()

Progress bar

import time
my_bar = st.progress(0,text="this is progress")
for p in range(100):
    time.sleep(1)
    my_bar.progress(p+10)

spinner

with st.spinner("waiting...."):
    time.sleep(3)

st.success("Sucessful!!")

side bar

# Sidebar
st.sidebar.header("About")
st.sidebar.title("This is our demo Project")

algorithms = st.sidebar.selectbox("Your Alogorithm",["Liner Regration","Logistic Regration", "dession tree"])

Selector

occupation = st.selectbox("Your Occuption", ["programmer","data scientist", "Doctor", "Businessman"])
st.write("you Selected this option", occupation)

Miltiselect

location = st.multiselect("Where do you work", ("pbi","mumbai", "punjaie","delhi"))
st.write("You selected", len(location), "locations")

Display JSON Output

st.text("Display JSON Data")
st.json({
    "Name": "Shivan",
    "Gender": "Male"})

status = st.radio(")