Create app.py

app.py

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+import gradio as gr
+import re
+
+# === Redaction patterns ===
+PII_PATTERNS = {
+    "EMAIL": re.compile(r"\b[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}\b"),
+    "ZIP": re.compile(r"\b\d{5}(?:-\d{4})?\b"),
+    "ADDRESS": re.compile(r"\b\d{1,5}\s\w+(?:\s\w+)*,\s*\w+,\s*[A-Z]{2}\s*\d{5}\b"),
+    "NAME": re.compile(r"\b([A-Z][a-z]+(?:\s+[A-Z][a-z]+)+)\b")
+}
+
+def redact_text(sentence):
+    for label, pattern in PII_PATTERNS.items():
+        sentence = pattern.sub(f"[REDACTED_{label}]", sentence)
+    return sentence
+
+# === Gradio UI ===
+demo = gr.Interface(
+    fn=redact_text,
+    inputs=gr.Textbox(label="Enter a sentence containing PII"),
+    outputs=gr.Textbox(label="Redacted sentence"),
+    title="PII Redactor Demo",
+    description="Paste a sentence and see PII like emails, addresses, ZIPs, or names redacted in real-time.",
+    allow_flagging="never"
+)
+
+demo.launch()