Streamlit
1 Introduction to Streamlit
1.1 What is Streamlit?
1.2 Why use Streamlit?
1.3 Setting up the environment
1.4 Creating your first Streamlit app
2 Basic Components
2.1 Text elements
2.1 1 Displaying text
2.1 2 Formatting text
2.2 Data display elements
2.2 1 Displaying data frames
2.2 2 Displaying tables
2.3 Input widgets
2.3 1 Text input
2.3 2 Number input
2.3 3 Date input
2.3 4 Dropdown selection
2.3 5 Slider
2.3 6 Checkbox
2.3 7 Radio buttons
2.3 8 Buttons
3 Advanced Components
3.1 Interactive widgets
3.1 1 Multiselect
3.1 2 File uploader
3.1 3 Color picker
3.2 Media elements
3.2 1 Displaying images
3.2 2 Displaying videos
3.2 3 Displaying audio
3.3 Chart elements
3.3 1 Line chart
3.3 2 Bar chart
3.3 3 Area chart
3.3 4 Scatter chart
3.3 5 Map chart
4 Layout and Styling
4.1 Layout components
4.1 1 Columns
4.1 2 Tabs
4.1 3 Expander
4.2 Styling elements
4.2 1 Custom CSS
4.2 2 Theming
4.2 3 Adding custom fonts
5 State Management
5.1 Session state
5.1 1 Managing state across reruns
5.1 2 Persisting state
5.2 Caching
5.2 1 Caching functions
5.2 2 Caching data
6 Deployment
6.1 Deploying to Streamlit Sharing
6.1 1 Setting up Streamlit Sharing
6.1 2 Deploying your app
6.2 Deploying to other platforms
6.2 1 Deploying to Heroku
6.2 2 Deploying to AWS
6.2 3 Deploying to Google Cloud
7 Best Practices
7.1 Writing clean and maintainable code
7.2 Optimizing performance
7.3 Handling errors and exceptions
7.4 Version control with Git
8 Advanced Topics
8.1 Integrating with other libraries
8.1 1 Integrating with Pandas
8.1 2 Integrating with Plotly
8.1 3 Integrating with TensorFlow
8.2 Building complex apps
8.2 1 Creating multi-page apps
8.2 2 Handling authentication
8.2 3 Building interactive dashboards
8.3 Custom components
8.3 1 Creating custom widgets
8.3 2 Extending Streamlit with custom components
9 Case Studies
9.1 Building a data exploration app
9.2 Building a machine learning model deployment app
9.3 Building a real-time data visualization app
9 Case Studies Explained

Case Studies Explained

Key Concepts

Real-World Applications

Real-world applications of Streamlit span across various industries such as finance, healthcare, and e-commerce. These applications demonstrate how Streamlit can be used to create interactive dashboards, predictive models, and data analysis tools.

Problem Solving

Streamlit is often used to solve specific problems by providing a user-friendly interface for data analysis and visualization. For example, in finance, Streamlit can be used to create a dashboard that monitors stock prices and predicts market trends.

Data Visualization

Data visualization in Streamlit involves creating charts, graphs, and other visual representations of data. This helps in understanding complex data sets and making informed decisions. Techniques such as line charts, bar charts, and heatmaps are commonly used.

User Interaction

Enhancing user interaction involves creating dynamic and responsive applications. This can be achieved using widgets such as sliders, dropdowns, and buttons that allow users to interact with the data and see real-time updates.

Integration with Other Tools

Streamlit can be integrated with other tools and technologies such as databases, machine learning models, and APIs. This allows for more comprehensive and powerful applications. For example, integrating Streamlit with a machine learning model can provide predictive analytics capabilities.

Examples

Example 1: Financial Dashboard

import streamlit as st
import pandas as pd
import plotly.express as px

st.title("Financial Dashboard")

# Load data
data = pd.read_csv('stock_data.csv')

# Display data
st.write(data.head())

# Create a line chart
fig = px.line(data, x='Date', y='Close', title='Stock Price Over Time')
st.plotly_chart(fig)
    

Example 2: Healthcare Data Analysis

import streamlit as st
import pandas as pd
import matplotlib.pyplot as plt

st.title("Healthcare Data Analysis")

# Load data
data = pd.read_csv('healthcare_data.csv')

# Display data
st.write(data.head())

# Create a bar chart
fig, ax = plt.subplots()
data['Age'].value_counts().plot(kind='bar', ax=ax)
st.pyplot(fig)
    

Example 3: E-commerce Sales Dashboard

import streamlit as st
import pandas as pd
import plotly.express as px

st.title("E-commerce Sales Dashboard")

# Load data
data = pd.read_csv('sales_data.csv')

# Display data
st.write(data.head())

# Create a pie chart
fig = px.pie(data, names='Category', values='Sales', title='Sales by Category')
st.plotly_chart(fig)
    

Analogies

Think of real-world applications as different rooms in a house, each serving a unique purpose. Problem solving is like finding the right tool in a toolbox to fix a specific issue. Data visualization is like painting a picture that tells a story. User interaction is like having a conversation with the app, where it responds to your inputs. Integration with other tools is like connecting different rooms in the house to create a seamless living experience.

By studying these case studies, you can gain valuable insights into how Streamlit can be applied to solve real-world problems and create powerful, interactive applications.