Update app.py

app.py

@@ -1,45 +1,39 @@
-import os
+# run_jupyterlab.py
 import subprocess
-import time
-import gradio as gr
-
-def launch_jupyter():
-    # 1. Install Node.js and LocalTunnel (runtime, not Dockerfile)
-    os.system("apt-get update && apt-get install -y nodejs npm")
-    os.system("npm install -g localtunnel")
-
-    # 2. Set a secure token (you can change this or generate dynamically)
-    token = "letmein123"
-
-    # 3. Launch JupyterLab with token authentication
-    subprocess.Popen([
-        "jupyter", "lab",
-        "--ip=127.0.0.1",
-        "--port=8888",
-        "--no-browser",
-        f"--NotebookApp.token={token}",
-        "--NotebookApp.allow_origin='*'",
-        "--NotebookApp.allow_remote_access=True"
-    ])
-
-    time.sleep(5)  # Give Jupyter some time to boot
-
-    # 4. Start LocalTunnel to expose port 8888
-    proc = subprocess.Popen(
-        ["lt", "--port", "8888", "--subdomain", "zyxciss-jlab"],
-        stdout=subprocess.PIPE,
-        stderr=subprocess.STDOUT,
-        text=True
-    )
-
-    # 5. Extract and return the LocalTunnel URL
-    for line in proc.stdout:
-        if "your url is:" in line:
-            url = line.strip().split("your url is:")[1].strip()
-            return f"🔓 Access JupyterLab here:\n{url}?token={token}"
-
-    return "❌ Failed to start LocalTunnel."
+import sys
+import os
 
-# Gradio UI
-demo = gr.Interface(fn=launch_jupyter, inputs=[], outputs="text")
-demo.launch()
+def launch_jupyterlab():
+    """Launches JupyterLab programmatically on port 7860."""
+    print("Attempting to launch JupyterLab on port 7860...")
+
+    command = [
+        sys.executable,
+        "-m",
+        "jupyterlab",
+        "--no-browser", # Remove this line if you want it to open automatically in your browser
+        "--port",
+        "7860" # Changed the port to 7860 as requested
+    ]
+
+    # Optional: Uncomment and modify if you want to specify a working directory
+    # command.extend(["--notebook-dir", "/path/to/your/notebooks"])
+
+    try:
+        print(f"Executing command: {' '.join(command)}")
+        process = subprocess.Popen(command)
+        
+        print("\nJupyterLab launched! Check your terminal for the URL.")
+        print("You should see a URL like 'http://localhost:7860/lab?token=...'")
+        print("Copy and paste this URL into your web browser to access JupyterLab.")
+        print("Keep this terminal window open while you are using JupyterLab.")
+
+    except FileNotFoundError:
+        print("Error: 'jupyterlab' command not found.")
+        print("Please ensure JupyterLab is installed. You can install it with:")
+        print("pip install jupyterlab")
+    except Exception as e:
+        print(f"An error occurred while launching JupyterLab: {e}")
+
+if __name__ == "__main__":
+    launch_jupyterlab()