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app.py

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+import streamlit as st
+import os
+
+DATA_DIR = "/"  # Replace with your actual data directory
+
+def get_subjects():
+    """Returns a list of subject directories."""
+    return [
+        name
+        for name in os.listdir(DATA_DIR)
+        if os.path.isdir(os.path.join(DATA_DIR, name))
+    ]
+
+def get_units(subject):
+    """Returns a list of unit directories within a subject."""
+    subject_path = os.path.join(DATA_DIR, subject)
+    return [
+        name
+        for name in os.listdir(subject_path)
+        if os.path.isdir(os.path.join(subject_path, name))
+    ]
+
+def get_notes(subject, unit):
+    """Returns a list of note files within a unit."""
+    unit_path = os.path.join(DATA_DIR, subject, unit)
+    return [
+        name
+        for name in os.listdir(unit_path)
+        if name.endswith(".md")
+    ]
+
+def load_note(subject, unit, note):
+    """Loads the content of a note file."""
+    note_path = os.path.join(DATA_DIR, subject, unit, note)
+    try:
+        with open(note_path, "r", encoding="utf-8") as f:
+            return f.read()
+    except Exception as e:
+        st.error(f"Error loading note: {e}")
+        return None
+
+st.set_page_config(
+    page_title="Beautiful Notes App",
+    page_icon="📝",
+    layout="wide",
+    initial_sidebar_state="expanded",
+)
+
+st.title("📝 Beautiful Notes App")
+
+# Sidebar for navigation
+with st.sidebar:
+    st.header("Navigation")
+    subjects = get_subjects()
+    selected_subject = st.selectbox("Select Subject", subjects)
+
+    if selected_subject:
+        units = get_units(selected_subject)
+        if units:
+            selected_unit = st.selectbox("Select Unit", units)
+            if selected_unit:
+                notes = get_notes(selected_subject, selected_unit)
+                if notes:
+                    selected_note = st.selectbox("Select Note", notes)
+                else:
+                    st.info("No notes found in this unit.")
+                    selected_note = None
+            else:
+                st.info("No units found in this subject.")
+                selected_note = None
+        else:
+            st.info("No units found in this subject.")
+            selected_note = None
+    else:
+        st.info("No subjects found in the data directory.")
+        selected_note = None
+
+# Main area to display notes
+if selected_subject and selected_unit and selected_note:
+    st.header(f"{selected_subject} / {selected_unit} / {selected_note[:-3]}")  # Remove .md extension
+    note_content = load_note(selected_subject, selected_unit, selected_note)
+    if note_content:
+        st.markdown(note_content, unsafe_allow_html=True)
+elif selected_subject and selected_unit:
+    st.info("Select a note from the sidebar to view it.")
+elif selected_subject:
+    st.info("Select a unit from the sidebar to view notes.")
+else:
+    st.info("Select a subject from the sidebar to start exploring your notes.")
+
+# --- Styling ---
+st.markdown(
+    """
+    <style>
+    /* Add custom styling here */
+    .streamlit-expander {
+        border: 1px solid #ccc;
+        border-radius: 5px;
+        margin-bottom: 10px;
+    }
+    .streamlit-expander-header {
+        font-weight: bold;
+        padding: 10px;
+    }
+    .streamlit-expander-content {
+        padding: 10px;
+    }
+    body {
+        font-family: sans-serif;
+        color: #333;
+        background-color: #f4f4f4;
+    }
+    .stApp {
+        max-width: 900px;
+        margin: 0 auto;
+        padding: 20px;
+        background-color: white;
+        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+        border-radius: 10px;
+    }
+    h1 {
+        color: #007bff;
+    }
+    h2, h3, h4, h5, h6 {
+        color: #0056b3;
+    }
+    .st-bf { /* Styling for selectbox labels */
+        font-weight: bold;
+    }
+    </style>
+    """,
+    unsafe_allow_html=True,
+)

prompt

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+i want to make a web app using typescript, react and vite
+
+the name of the app will be  msc 1 semester
+
+here it some additional information
+
+syllabus
+
+Mathematics
+
+UNIT I: Mathematical Logic, Sets, Relations, and Functions
+
+UNIT II: Lattices & Boolean Algebra
+
+UNIT III: Groups, Fields, & Rings
+
+UNIT IV: Graphs
+
+UNIT V: Trees
+
+Advanced Operating Systems
+
+UNIT I: Introduction
+
+UNIT II: Advanced Processor Management Features
+
+UNIT III: Advanced Memory Management
+
+UNIT IV: Advanced Device Management Features
+
+UNIT V: Advanced File Management Features
+
+Data Structures using C
+
+UNIT I: Introduction and Preliminaries
+
+UNIT II: String Processing, Arrays, Records, and Pointers
+
+UNIT III: Linked Lists, Stacks, Queues, Recursion
+
+UNIT IV: Trees and Graphs
+
+UNIT V: Sorting and Searching
+
+C++
+
+UNIT I: Language Fundamentals
+
+UNIT II: Structures, Functions & Arrays
+
+UNIT III: Object Classes and Inheritance
+
+UNIT IV: Pointers
+
+UNIT V: Virtual Functions, Files & Streams
+
+Computer Architecture
+
+UNIT I: Representation of Information
+
+UNIT II: Register Transfer Language and Micro-Operations
+
+UNIT III: Basic Computer Organization and Design
+
+UNIT IV: Computer Software and Central Processor Organization
+
+UNIT V: Input-Output & Memory Organization  
+
+
+
+
+so i have completed storing my notes in project folder
+
+i have stored my notes like this i want a streamlit app which uses and displayes as beautiful notes app
+
+
+data/notes/
+        ├──Mathematics/
+        ├── UNIT_I/
+        │   ├── Mathematical_Logic.md
+        │   ├── Sets.md
+        │   ├── Relations.md
+        │   └── Functions.md
+        ├── UNIT_II/
+        │   ├── Lattices.md
+        │   └── Boolean_Algebra.md
+        ├── UNIT_III/
+        │   ├── Groups.md
+        │   ├── Fields.md
+        │   └── Rings.md
+        ├── UNIT_IV/
+        │   └── Graphs.md
+        └── UNIT_V/
+            └── Trees.md
+        Advanced_Operating_Systems/
+        ├── UNIT_I/
+        │   └── Introduction.md
+        ├── UNIT_II/
+        │   └── Advanced_Processor_Management_Features.md
+        ├── UNIT_III/
+        │   └── Advanced_Memory_Management.md
+        ├── UNIT_IV/
+        │   └── Advanced_Device_Management_Features.md
+        └── UNIT_V/
+            └── Advanced_File_Management_Features.md
+        Data_Structures_using_C/
+        ├── UNIT_I/
+        │   └── Introduction_and_Preliminaries.md
+        ├── UNIT_II/
+        │   ├── String_Processing.md
+        │   ├── Arrays.md
+        │   ├── Records.md
+        │   └── Pointers.md
+        ├── UNIT_III/
+        │   ├── Linked_Lists.md
+        │   ├── Stacks.md
+        │   ├── Queues.md
+        │   └── Recursion.md
+        ├── UNIT_IV/
+        │   ├── Trees.md
+        │   └── Graphs.md
+        └── UNIT_V/
+            └── Sorting.md
+                └── Searching.md
+        C++/
+        ├── UNIT_I/
+        │   └── Language_Fundamentals.md
+        ├── UNIT_II/
+        │   ├── Structures.md
+        │   ├── Functions.md
+        │   └── Arrays.md
+        ├── UNIT_III/
+        │   ├── Object_Classes.md
+        │   └── Inheritance.md
+        ├── UNIT_IV/
+        │   └── Pointers.md
+        └── UNIT_V/
+            ├── Virtual_Functions.md
+            ├── Files.md
+            └── Streams.md
+        Computer_Architecture/
+        ├── UNIT_I/
+        │   └── Representation_of_Information.md
+        ├── UNIT_II/
+        │   ├── Register_Transfer_Language.md
+        │   └── Micro-Operations.md
+        ├── UNIT_III/
+        │   ├── Basic_Computer_Organization.md
+        │   └── Design.md
+        ├── UNIT_IV/
+        │   ├── Computer_Software.md
+        │   └── Central_Processor_Organization.md
+        └── UNIT_V/
+            ├── Input-Output.md
+            └── Memory_Organization.md