Updated the code

app.py

@@ -0,0 +1,18 @@
+import gradio as gr
+import pdfminer
+from pdfminer.high_level import extract_text
+
+def read_pdf(file):
+    text = extract_text(file.name)
+    return text
+
+iface = gr.Interface(
+    read_pdf,
+    gr.inputs.File(label="Upload a PDF file"),
+    gr.outputs.Textbox(label="Extracted text"),
+    title="PDF Text Extractor",
+    description="A simple app that extracts text from PDF files using pdfminer.",
+    theme="huggingface"
+
+)
+iface.launch()

requirements.txt

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+PyPDF2
+pdfminer
+pdfminer.six