Update app.py

app.py

@@ -7,7 +7,6 @@ from sklearn.linear_model import LinearRegression, Lasso
 from sklearn.ensemble import RandomForestRegressor
 from sklearn.metrics import mean_squared_error, r2_score
 import joblib
-import streamlit as st
 import plotly.express as px
 import plotly.figure_factory as ff
 
@@ -17,295 +16,221 @@ def main():
     st.title("Machine Learning")
 
     with st.expander("1: Add Your Data Source"):
-            uploaded_file = st.file_uploader("Upload your CSV file", type=["csv"])
-            
-            # If no file is uploaded, load example.csv
-            if uploaded_file is None:
-                try:
-                    data = pd.read_csv('example.csv')  # Load example CSV
-                    st.info("Loaded example.csv")
-                except FileNotFoundError:
-                    st.error("Example CSV file not found. Please upload your own CSV file.")
-            else:
-                data = pd.read_csv(uploaded_file)
+        uploaded_file = st.file_uploader("Upload your CSV or Excel file", type=["csv", "xlsx", "xls"])
+
+        if uploaded_file is None:
+            try:
+                data = pd.read_csv('example.csv')  # Load example CSV
+                st.info("Loaded example.csv")
+            except FileNotFoundError:
+                st.error("Example CSV file not found. Please upload your own CSV or Excel file.")
+            except pd.errors.EmptyDataError:
+                st.error("Example CSV file is empty or invalid.")
+        else:
+            try:
+                if uploaded_file.name.endswith('.csv'):
+                    data = pd.read_csv(uploaded_file)
+                elif uploaded_file.name.endswith(('.xlsx', '.xls')):
+                    data = pd.read_excel(uploaded_file)
+                
+                # Check if the file has content
+                if data.empty:
+                    st.error("Uploaded file is empty. Please upload a valid CSV or Excel file.")
+                else:
+                    st.success("File uploaded successfully!")
+            except pd.errors.EmptyDataError:
+                st.error("The uploaded file is empty or contains no readable data.")
+            except ValueError:
+                st.error("Error in file format. Please ensure the file is a valid CSV or Excel.")
+            except Exception as e:
+                st.error(f"An error occurred: {e}")
 
     with st.expander("2: DataSet Preview"):
         if uploaded_file is not None:
             data = pd.read_csv(uploaded_file)
         else:
-            data= pd.read_csv('example.csv')
-            # Step 2: Data Overview
-            view1, view2,view3, view4 = st.columns(4)
-            with view1: 
-                st.write("Data Overview")
-                st.dataframe(data.head())
-            with view2:
-                st.write(" Data Description")
-                st.write(data.describe())
-            with view3:
-                st.write(" Missing Values")
-                st.write(data.isnull().sum())
-            with view4:
-                st.write(" Data Types")
-                st.write(data.dtypes)
-
+            data = pd.read_csv('example.csv')
+            st.write("Data Overview")
+            st.dataframe(data.head())
+            st.write("Data Description")
+            st.write(data.describe())
+            st.write("Missing Values")
+            st.write(data.isnull().sum())
+            st.write("Data Types")
+            st.write(data.dtypes)
 
     with st.expander("3: Data Cleaning"):           
-            # Step 3: Data Cleaning
-            clean1, clean2, clean3 = st.columns(3)
-            with clean1: 
-                st.write(" Data Summary Before Cleaning")
-                st.write(data.describe())
-            with clean2:
-                st.write("Missing Values Before Cleaning:")
-                st.write(data.isnull().sum())
-            with clean3:
-                # Visualize missing values
-                if st.checkbox("Show Missing Values Heatmap"):
-                    fig, ax = plt.subplots(figsize=(10, 6))
-                    sns.heatmap(data.isnull(), cbar=False, cmap='viridis', ax=ax)
-                    plt.title("Missing Values Heatmap")
-                    st.pyplot(fig)
-
-            clean4, clean5= st.columns(2)
-            with clean4:
-                # Remove duplicates
-                if st.checkbox("Remove Duplicate Rows"):
-                    initial_shape = data.shape
-                    data = data.drop_duplicates()
-                    st.success(f"Removed {initial_shape[0] - data.shape[0]} duplicate rows.")
-
-
-            with clean5:
-            # Handle missing values
-                missing_strategy = st.selectbox(
-                    "Choose a strategy for handling missing values",
-                    options=["Drop Missing Values", "Fill with Mean", "Fill with Median", "Fill with Mode", "Do Nothing"]
-                )
-
-                if st.button("Apply Missing Value Strategy"):
-                    if missing_strategy == "Drop Missing Values":
-                        data.dropna(inplace=True)
-                        st.success("Dropped rows with missing values.")
-                    elif missing_strategy == "Fill with Mean":
-                        data.fillna(data.mean(), inplace=True)
-                        st.success("Filled missing values with the mean.")
-                    elif missing_strategy == "Fill with Median":
-                        data.fillna(data.median(), inplace=True)
-                        st.success("Filled missing values with the median.")
-                    elif missing_strategy == "Fill with Mode":
-                        for column in data.select_dtypes(include=['object']).columns:
-                            data[column].fillna(data[column].mode()[0], inplace=True)
-                        st.success("Filled missing values with the mode for categorical columns.")
-                    elif missing_strategy == "Do Nothing":
-                        st.info("No changes made to missing values.")
-            clean7, clean8= st.columns(2)
-            with clean7:
-                # Display basic info after cleaning
-                st.write(" Data Summary After Cleaning")
-                st.write(data.describe())
-            with clean8:
-                st.write("Missing Values After Cleaning:")
-                st.write(data.isnull().sum())
-    
+        st.write("Data Summary Before Cleaning")
+        st.write(data.describe())
+        st.write("Missing Values Before Cleaning:")
+        st.write(data.isnull().sum())
+
+        if st.checkbox("Show Missing Values Heatmap"):
+            fig, ax = plt.subplots(figsize=(10, 6))
+            sns.heatmap(data.isnull(), cbar=False, cmap='viridis', ax=ax)
+            plt.title("Missing Values Heatmap")
+            st.pyplot(fig)
+
+        if st.checkbox("Remove Duplicate Rows"):
+            initial_shape = data.shape
+            data = data.drop_duplicates()
+            st.success(f"Removed {initial_shape[0] - data.shape[0]} duplicate rows.")
+
+        missing_strategy = st.selectbox(
+            "Choose a strategy for handling missing values",
+            options=["Drop Missing Values", "Fill with Mean", "Fill with Median", "Fill with Mode", "Do Nothing"]
+        )
+
+        if st.button("Apply Missing Value Strategy"):
+            if missing_strategy == "Drop Missing Values":
+                data.dropna(inplace=True)
+                st.success("Dropped rows with missing values.")
+            elif missing_strategy == "Fill with Mean":
+                data.fillna(data.mean(), inplace=True)
+                st.success("Filled missing values with the mean.")
+            elif missing_strategy == "Fill with Median":
+                data.fillna(data.median(), inplace=True)
+                st.success("Filled missing values with the median.")
+            elif missing_strategy == "Fill with Mode":
+                for column in data.select_dtypes(include=['object']).columns:
+                    data[column].fillna(data[column].mode()[0], inplace=True)
+                st.success("Filled missing values with the mode for categorical columns.")
+            elif missing_strategy == "Do Nothing":
+                st.info("No changes made to missing values.")
+
+        st.write("Data Summary After Cleaning")
+        st.write(data.describe())
+        st.write("Missing Values After Cleaning:")
+        st.write(data.isnull().sum())
+
     with st.expander('4: EDA'):
-            
-            # Step 4: Exploratory Data Analysis (EDA)
-            st.write("Correlation Matrix")
-
-            # Calculate the correlation matrix
-            correlation_matrix = data.corr()
-
-            # Create a heatmap using Plotly
-            fig = ff.create_annotated_heatmap(
-                z=correlation_matrix.values,
-                x=list(correlation_matrix.columns),
-                y=list(correlation_matrix.index),
-            )
-
-            # Update layout for better readability
-            fig.update_layout(
-                title="Correlation Matrix",
-                xaxis_title="Features",
-                yaxis_title="Features",
-                width=700,  # Adjust width as needed
-                height=500,  # Adjust height as needed
-            )
-
-            # Display the figure in Streamlit
-            st.plotly_chart(fig)
-            eda1, eda2= st.columns(2)
-            with eda1:
-                # Plotting distributions for numerical features
-                if st.checkbox("Show Distribution Plots for Numeric Features"):
-                    for column in data.select_dtypes(include=[int, float]).columns:
-                        fig, ax = plt.subplots(figsize=(8, 4))
-                        sns.histplot(data[column], bins=30, kde=True, ax=ax)
-                        plt.title(f'Distribution of {column}')
-                        st.pyplot(fig)
-            with eda2:
-                # Boxplots for outlier detection
-                if st.checkbox("Show Boxplots for Numeric Features"):
-                    for column in data.select_dtypes(include=[int, float]).columns:
-                        fig, ax = plt.subplots(figsize=(8, 4))
-                        sns.boxplot(x=data[column], ax=ax)
-                        plt.title(f'Boxplot of {column}')
-                        st.pyplot(fig)
-
-    with st.expander("5: Feature Engineering"):           
-            target_column = st.selectbox("Select the target variable", options=data.columns)
-            feature_columns = st.multiselect("Select features", options=data.columns.drop(target_column))
-    with st.expander("6: Modelling "):
-            # Initialize session state for storing results
-            if 'model_plot' not in st.session_state:
-                st.session_state.model_plot = None
-            if 'model_metrics' not in st.session_state:
-                st.session_state.model_metrics = None
-
-            # Model training
-            model_option = st.selectbox("Select Regression Model", options=["Linear Regression", "Random Forest Regression", "Lasso Regression"])
-
-            if st.button("Train Model (Without Hyperparameter Tuning)"):
-                if feature_columns:
-                    X = data[feature_columns]
-                    y = data[target_column]
-                    X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
-
-                    # Initialize the selected model
-                    if model_option == "Linear Regression":
-                        model = LinearRegression()
-                    elif model_option == "Random Forest Regression":
-                        model = RandomForestRegressor(random_state=42)
-                    elif model_option == "Lasso Regression":
-                        model = Lasso()
-
-                    # Train model
-                    model.fit(X_train, y_train)
-
-                    # Save the model
-                    model_name = st.text_input('Enter model name', 'my_model')
-                    model_file_path = f'{model_name}.pkl'
-                    joblib.dump(model, model_file_path)
-                    st.success("Model saved successfully!")
-
-                    # Add a download button for the model
-                    with open(model_file_path, "rb") as f:
-                        st.download_button(
-                            label="Download Model",
-                            data=f,
-                            file_name=model_file_path,
-                            mime="application/octet-stream"
-                        )
-
-                    # Make predictions
-                    y_pred = model.predict(X_test)
-
-                    # Calculate metrics
-                    mse = mean_squared_error(y_test, y_pred)
-                    r2 = r2_score(y_test, y_pred)
-
-                    # Step 7: Visualization of Predictions (Line Plot)
-                    st.session_state.model_plot = (y_test.reset_index(drop=True), y_pred)
-                    st.session_state.model_metrics = (mse, r2)
-
-                    # Show results
-                    st.success(f"Mean Squared Error: {mse:.2f}")
-                    st.success(f"R^2 Score: {r2:.2f}")
-
-
-
-
-            # Display model plot if available
-            if st.session_state.model_plot is not None:
-                y_test, y_pred = st.session_state.model_plot
-                fig, ax = plt.subplots(figsize=(10, 6))
-                ax.plot(y_test, label="True Values", color="blue", linestyle="--")
-                ax.plot(y_pred, label="Predicted Values", color="orange")
-                ax.set_title(f'{model_option}: True Values vs Predictions')
-                ax.set_xlabel('Index')
-                ax.set_ylabel('Values')
-                ax.legend()
+        st.write("Correlation Matrix")
+        correlation_matrix = data.corr()
+        fig = ff.create_annotated_heatmap(
+            z=correlation_matrix.values,
+            x=list(correlation_matrix.columns),
+            y=list(correlation_matrix.index),
+        )
+        fig.update_layout(
+            title="Correlation Matrix",
+            xaxis_title="Features",
+            yaxis_title="Features",
+            width=700,
+            height=500,
+        )
+        st.plotly_chart(fig)
+
+        if st.checkbox("Show Distribution Plots for Numeric Features"):
+            for column in data.select_dtypes(include=[int, float]).columns:
+                fig, ax = plt.subplots(figsize=(8, 4))
+                sns.histplot(data[column], bins=30, kde=True, ax=ax)
+                plt.title(f'Distribution of {column}')
                 st.pyplot(fig)
 
-                # Display metrics if available
-                if st.session_state.model_metrics is not None:
-                    mse, r2 = st.session_state.model_metrics
-                    st.success(f"Mean Squared Error: {mse:.2f}")
-                    st.success(f"R^2 Score: {r2:.2f}")
+        if st.checkbox("Show Boxplots for Numeric Features"):
+            for column in data.select_dtypes(include=[int, float]).columns:
+                fig, ax = plt.subplots(figsize=(8, 4))
+                sns.boxplot(x=data[column], ax=ax)
+                plt.title(f'Boxplot of {column}')
+                st.pyplot(fig)
 
+    with st.expander("5: Feature Engineering"):
+        target_column = st.selectbox("Select the target variable", options=data.columns)
+        feature_columns = st.multiselect("Select features", options=data.columns.drop(target_column))
 
-    with st.expander("7: HyperParameter"):
-            # Step 8: Hyperparameter Tuning
-            st.write("Hyperparameter Tuning")
+    with st.expander("6: Modelling"):
+        if 'model_plot' not in st.session_state:
+            st.session_state.model_plot = None
+        if 'model_metrics' not in st.session_state:
+            st.session_state.model_metrics = None
+
+        model_option = st.selectbox("Select Regression Model", options=["Linear Regression", "Random Forest Regression", "Lasso Regression"])
+
+        if st.button("Train Model (Without Hyperparameter Tuning)"):
             if feature_columns:
-                hyperparam_model_option = st.selectbox("Select Model for Hyperparameter Tuning", options=["Linear Regression", "Random Forest Regression", "Lasso Regression"])
+                X = data[feature_columns]
+                y = data[target_column]
+                X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
+
+                if model_option == "Linear Regression":
+                    model = LinearRegression()
+                elif model_option == "Random Forest Regression":
+                    model = RandomForestRegressor(random_state=42)
+                elif model_option == "Lasso Regression":
+                    model = Lasso()
+
+                model.fit(X_train, y_train)
+
+                model_name = st.text_input('Enter model name', 'my_model')
+                model_file_path = f'{model_name}.pkl'
+                joblib.dump(model, model_file_path)
+                st.success("Model saved successfully!")
+
+                with open(model_file_path, "rb") as f:
+                    st.download_button(
+                        label="Download Model",
+                        data=f,
+                        file_name=model_file_path,
+                        mime="application/octet-stream"
+                    )
+
+                y_pred = model.predict(X_test)
+                mse = mean_squared_error(y_test, y_pred)
+                r2 = r2_score(y_test, y_pred)
+
+                st.session_state.model_plot = (y_test.reset_index(drop=True), y_pred)
+                st.session_state.model_metrics = (mse, r2)
+
+                st.success(f"Mean Squared Error: {mse:.2f}")
+                st.success(f"R^2 Score: {r2:.2f}")
+
+        if st.session_state.model_plot is not None:
+            y_test, y_pred = st.session_state.model_plot
+            fig, ax = plt.subplots(figsize=(10, 6))
+            ax.plot(y_test, label="True Values", color="blue", linestyle="--")
+            ax.plot(y_pred, label="Predicted Values", color="orange")
+            ax.set_title(f'{model_option}: True Values vs Predictions')
+            ax.set_xlabel('Index')
+            ax.set_ylabel('Values')
+            ax.legend()
+            st.pyplot(fig)
+
+            if st.session_state.model_metrics is not None:
+                mse, r2 = st.session_state.model_metrics
+                st.success(f"Mean Squared Error: {mse:.2f}")
+                st.success(f"R^2 Score: {r2:.2f}")
+
+    with st.expander("7: HyperParameter"):
+        if feature_columns:
+            hyperparam_model_option = st.selectbox("Select Model for Hyperparameter Tuning", options=["Linear Regression", "Random Forest Regression", "Lasso Regression"])
+
+            if hyperparam_model_option == "Linear Regression":
+                param_grid = {'fit_intercept': [True, False]}
+            elif hyperparam_model_option == "Random Forest Regression":
+                param_grid = {'n_estimators': [50, 100, 200], 'max_depth': [10, 20, None], 'min_samples_split': [2, 5, 10]}
+            elif hyperparam_model_option == "Lasso Regression":
+                param_grid = {'alpha': [0.01, 0.1, 1, 10], 'max_iter': [1000, 5000, 10000]}
+
+            if st.button("Train Model with Hyperparameter Tuning"):
+                X = data[feature_columns]
+                y = data[target_column]
+                X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
 
                 if hyperparam_model_option == "Linear Regression":
-                    param_grid = {'fit_intercept': [True, False]}
+                    model = LinearRegression()
+                    grid_search = GridSearchCV(model, param_grid, cv=5)
                 elif hyperparam_model_option == "Random Forest Regression":
-                    param_grid = {'n_estimators': [50, 100, 200], 'max_depth': [10, 20, None], 'min_samples_split': [2, 5, 10]}
+                    model = RandomForestRegressor(random_state=42)
+                    grid_search = GridSearchCV(model, param_grid, cv=5)
                 elif hyperparam_model_option == "Lasso Regression":
-                    param_grid = {'alpha': [0.01, 0.1, 1, 10], 'max_iter': [1000, 5000, 10000]}
-
-                if st.button("Train Model with Hyperparameter Tuning"):
-                    # Prepare data for training
-                    X = data[feature_columns]
-                    y = data[target_column]
-
-                    # Split data into training and testing sets
-                    X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
-
-                    # Initialize and perform hyperparameter tuning
-                    if hyperparam_model_option == "Linear Regression":
-                        model = LinearRegression()
-                        grid_search = GridSearchCV(model, param_grid, cv=5)
-                    elif hyperparam_model_option == "Random Forest Regression":
-                        model = RandomForestRegressor(random_state=42)
-                        grid_search = GridSearchCV(model, param_grid, cv=5)
-                    elif hyperparam_model_option == "Lasso Regression":
-                        model = Lasso()
-                        grid_search = GridSearchCV(model, param_grid, cv=5)
-
-                    # Train the model
-                    grid_search.fit(X_train, y_train)
-
-                    # Make predictions
-                    best_model = grid_search.best_estimator_
-                    y_pred = best_model.predict(X_test)
-
-                    # Calculate metrics
-                    mse = mean_squared_error(y_test, y_pred)
-                    r2 = r2_score(y_test, y_pred)
-
-                    # Step 9: Visualization of Predictions (Line Plot)
-                    st.session_state.model_plot = (y_test.reset_index(drop=True), y_pred)
-                    st.session_state.model_metrics = (mse, r2)
-
-                    # Show results
-                    st.success(f"Best Parameters: {grid_search.best_params_}")
-                    st.success(f"Mean Squared Error: {mse:.2f}")
-                    st.success(f"R^2 Score: {r2:.2f}")
-
-                # Display hyperparameter tuned model plot if available
-                if st.session_state.model_plot is not None:
-                    y_test, y_pred = st.session_state.model_plot
-                    fig, ax = plt.subplots(figsize=(10, 6))
-                    ax.plot(y_test, label="True Values", color="blue", linestyle="--")
-                    ax.plot(y_pred, label="Predicted Values", color="orange")
-                    ax.set_title(f'{hyperparam_model_option}: True Values vs Predictions (Tuned)')
-                    ax.set_xlabel('Index')
-                    ax.set_ylabel('Values')
-                    ax.legend()
-                    st.pyplot(fig)
-
-                    # Display metrics if available
-                    if st.session_state.model_metrics is not None:
-                        mse, r2 = st.session_state.model_metrics
-                        st.success(f"Mean Squared Error: {mse:.2f}")
-                        st.success(f"R^2 Score: {r2:.2f}")
-
-
-
-# Run the app
-if __name__ == "__main__":
+                    model = Lasso()
+                    grid_search = GridSearchCV(model, param_grid, cv=5)
+
+                grid_search.fit(X_train, y_train)
+                best_params = grid_search.best_params_
+
+                st.success(f"Best Hyperparameters: {best_params}")
+
+# Run the application
+if __name__ == '__main__':
     main()