Create app.py

app.py

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+import gradio as gr
+
+def convert_text(text):
+    upper_text = text.upper()
+    lower_text = text.lower()
+
+    # Proper sentence case (after every dot)
+    sentences = text.split(".")
+    sentence_text = ". ".join(
+        s.strip().capitalize() for s in sentences if s.strip()
+    )
+
+    return upper_text, lower_text, sentence_text
+
+
+with gr.Blocks(title="Text Case Converter") as demo:
+    gr.Markdown(
+        """
+        # 🔤 Text Case Converter  
+        Converts text into **UPPERCASE**, **lowercase**, and **Sentence case**.
+        """
+    )
+
+    input_text = gr.Textbox(label="Enter Text", lines=4)
+    convert_btn = gr.Button("Convert")
+
+    upper_output = gr.Textbox(label="UPPERCASE Output")
+    lower_output = gr.Textbox(label="lowercase Output")
+    sentence_output = gr.Textbox(label="Sentence case Output")
+
+    convert_btn.click(
+        fn=convert_text,
+        inputs=input_text,
+        outputs=[upper_output, lower_output, sentence_output]
+    )
+
+demo.launch()