app.py

import pandas as pd
import json
import streamlit as st
import matplotlib.pyplot as plt
import seaborn as sns
from wordcloud import WordCloud

# Define the Streamlit app
st.title("Data Analysis and Visualization")

# File upload and processing
uploaded_file = st.file_uploader("Upload JSON File", type=["json"])
if uploaded_file:
    loaded_dict = json.load(uploaded_file)
    df = pd.DataFrame(loaded_dict)
    st.subheader("Dataframe (df)")
    st.write(df)

    # Group by and aggregate data
    grouped = df.groupby('A').agg({'S': ['count', lambda x: (x == 'great').sum(), lambda x: (x == 'ok').sum(), lambda x: (x == 'bad').sum()]})
    grouped.columns = grouped.columns.map('_'.join)
    grouped = grouped.reset_index()
    grouped = grouped.rename(columns={'A': 'Aspect', 'S_count': 'Freq', 'S_<lambda_0>': 'Great', 'S_<lambda_1>': 'Ok', 'S_<lambda_2>': 'Bad'})

    st.subheader("Top Aspects by Frequency")
    st.write(grouped.sort_values(by="Freq", ascending=False).head(5))

    # Sentiment Distribution Chart
    sentiment_distribution = df["S"].value_counts(normalize=True) * 100
    palette_color = sns.color_palette('bright')

    st.subheader("Sentiment Distribution")
    fig, (ax1, ax2) = plt.subplots(1, 2, figsize=(10, 6))

    ax1.pie(sentiment_distribution, labels=sentiment_distribution.index, autopct='%1.1f%%', startangle=140)
    ax1.axis('equal')
    ax1.set_title("Sentiment Distribution %")

    sns.countplot(x="S", data=df, palette=palette_color, ax=ax2)
    ax2.set_title("Sentiment Distribution Counts")

    st.pyplot(fig)

    # Word Cloud
    aspect_terms = " ".join(df["A"])
    wordcloud = WordCloud(
        width=800,
        height=400,
        background_color='white',
        max_words=100,
        colormap='inferno',
        contour_width=3,
        contour_color='red',
    ).generate(aspect_terms)

    st.subheader("Word Cloud for Most Mentioned Aspects")
    plt.figure(figsize=(10, 5))
    plt.imshow(wordcloud, interpolation='bilinear')
    plt.title("Most mentioned aspect terms")
    plt.axis("off")
    st.pyplot()

st.sidebar.markdown("**Upload a JSON file to get started.**")