Create app.py

app.py

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+import streamlit as st
+from PyPDF2 import PdfMerger
+import os
+
+# Streamlit app layout
+st.title("PDF Combiner App")
+st.write("Upload individual PDF pages to combine them into one PDF document.")
+
+uploaded_files = st.file_uploader("Upload PDF pages", type="pdf", accept_multiple_files=True)
+
+if uploaded_files:
+    merger = PdfMerger()
+
+    for uploaded_file in uploaded_files:
+        st.write(f"Adding: {uploaded_file.name}")
+        merger.append(uploaded_file)
+
+    # Save the combined PDF to a temporary file
+    output_filename = "combined_document.pdf"
+    with open(output_filename, "wb") as output_file:
+        merger.write(output_file)
+
+    st.success("PDF pages combined successfully!")
+
+    # Provide download link
+    with open(output_filename, "rb") as f:
+        st.download_button("Download Combined PDF", f, file_name=output_filename, mime="application/pdf")
+
+    # Clean up
+    os.remove(output_filename)