app.py

import gradio as gr
import sys

# Print version info for debugging
print(f"Python version: {sys.version}")
print(f"Gradio version: {gr.__version__}")

# Hello World function
def greet(name):
    return f"Hello, {name}!"

# Calculator function
def calculate(num1, num2, op):
    if op == "Add":
        return str(num1 + num2)
    elif op == "Subtract":
        return str(num1 - num2)
    elif op == "Multiply":
        return str(num1 * num2)
    elif op == "Divide":
        if num2 == 0:
            return "Error: Division by zero"
        return str(num1 / num2)

# Text Analysis function
def analyze_text(text):
    if not text:
        return "Please enter some text"
    
    num_chars = len(text)
    num_words = len(text.split())
    num_lines = len(text.splitlines())
    
    return f"Characters: {num_chars}\nWords: {num_words}\nLines: {num_lines}"

# Create a tab-based interface with simple demos
with gr.Blocks() as demo:
    gr.Markdown("# 🤖 Simple Gradio Demo Apps")
    
    with gr.Tab("Hello World"):
        with gr.Row():
            name_input = gr.Textbox(label="Your Name", value="World")
            greeting_output = gr.Textbox(label="Greeting")
        
        greet_btn = gr.Button("Say Hello")
        greet_btn.click(fn=greet, inputs=name_input, outputs=greeting_output)
    
    with gr.Tab("Calculator"):
        with gr.Row():
            num1 = gr.Number(label="First Number", value=5)
            num2 = gr.Number(label="Second Number", value=3)
        
        operation = gr.Radio(
            ["Add", "Subtract", "Multiply", "Divide"], 
            label="Operation", 
            value="Add"
        )
        
        calc_result = gr.Textbox(label="Result")
        calc_btn = gr.Button("Calculate")
        calc_btn.click(fn=calculate, inputs=[num1, num2, operation], outputs=calc_result)
    
    with gr.Tab("Text Analysis"):
        text_input = gr.Textbox(label="Enter text to analyze", lines=5)
        text_result = gr.Textbox(label="Analysis Result")
        analyze_btn = gr.Button("Analyze Text")
        analyze_btn.click(fn=analyze_text, inputs=text_input, outputs=text_result)
    
    gr.Markdown("""
    ### About This Demo
    
    This is a simple demonstration of Gradio functionality with:
    
    1. A Hello World text generator
    2. A basic calculator
    3. A text analysis tool
    
    Use the tabs above to try different demo apps.
    """)

if __name__ == "__main__":
    demo.launch(server_name="0.0.0.0", server_port=7860)