Create app.py

app.py

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+import streamlit as st
+import cv2
+from PIL import Image
+import numpy as np
+from imutils.video import VideoStream
+import pikepdf
+import fpdf
+import fitz  # pymupdf
+import vidgear.gears
+
+# 🌟🔥 Set up the Streamlit UI with an impressive demo style!
+st.title("🚀 Impressive Library Demo Extravaganza")
+st.write("Watch these libraries flex their muscles with live demos producing real outputs!")
+
+# 📜 Demo Functions
+def demo_pikepdf():
+    pdf = pikepdf.Pdf.new()
+    pdf.pages.append(pikepdf.Page(pikepdf.Dictionary()))
+    pdf.save("demo_pikepdf.pdf")
+    return "demo_pikepdf.pdf"
+
+def demo_fpdf():
+    pdf = fpdf.FPDF()
+    pdf.add_page()
+    pdf.set_font("Arial", size=12)
+    pdf.cell(200, 10, txt="FPDF rocks!", ln=True)
+    pdf.output("demo_fpdf.pdf")
+    return "demo_fpdf.pdf"
+
+def demo_pymupdf():
+    doc = fitz.open()
+    page = doc.new_page()
+    page.insert_text((100, 100), "Pymupdf shines!")
+    doc.save("demo_pymupdf.pdf")
+    return "demo_pymupdf.pdf"
+
+def demo_opencv_image():
+    cap = cv2.VideoCapture(0)
+    ret, frame = cap.read()
+    if ret:
+        cv2.imwrite("demo_opencv.jpg", frame)
+        cap.release()
+        return "demo_opencv.jpg"
+    cap.release()
+    return None
+
+def demo_imutils():
+    vs = VideoStream(src=0).start()
+    frame = vs.read()
+    vs.stop()
+    if frame is not None:
+        cv2.imwrite("demo_imutils.jpg", cv2.cvtColor(frame, cv2.COLOR_RGB2BGR))
+        return "demo_imutils.jpg"
+    return None
+
+def demo_vidgear():
+    stream = vidgear.gears.CamGear(source=0).start()
+    frame = stream.read()
+    stream.stop()
+    if frame is not None:
+        cv2.imwrite("demo_vidgear.jpg", frame)
+        return "demo_vidgear.jpg"
+    return None
+
+# 🌟 Main Demo Interface
+st.sidebar.header("🎮 Demo Controls")
+demo_type = st.sidebar.selectbox("Choose a Demo Category", ["PDF", "Image Capture", "Video Capture"])
+
+# 📜 PDF Demos
+if demo_type == "PDF":
+    st.subheader("📜 PDF Powerhouse")
+    demo = st.selectbox("Pick a PDF Demo", ["pikepdf", "fpdf2", "pymupdf"])
+    if st.button("Run PDF Demo"):
+        with st.spinner("Running demo..."):
+            try:
+                if demo == "pikepdf":
+                    result = demo_pikepdf()
+                    st.download_button("Download PDF", open(result, "rb").read(), file_name=result)
+                elif demo == "fpdf2":
+                    result = demo_fpdf()
+                    st.download_button("Download PDF", open(result, "rb").read(), file_name=result)
+                elif demo == "pymupdf":
+                    result = demo_pymupdf()
+                    st.download_button("Download PDF", open(result, "rb").read(), file_name=result)
+            except Exception as e:
+                st.error(f"Demo failed: {str(e)}")
+
+# 📸 Image Capture Demos
+elif demo_type == "Image Capture":
+    st.subheader("📸 Image Snappers")
+    demo = st.selectbox("Pick an Image Demo", ["opencv-python", "imutils"])
+    if st.button("Run Image Demo"):
+        with st.spinner("Capturing image..."):
+            try:
+                if demo == "opencv-python":
+                    result = demo_opencv_image()
+                    if result:
+                        st.image(result, caption="Snapped with OpenCV!")
+                    else:
+                        st.error("Camera not detected!")
+                elif demo == "imutils":
+                    result = demo_imutils()
+                    if result:
+                        st.image(result, caption="Snapped with Imutils!")
+                    else:
+                        st.error("Camera not detected!")
+            except Exception as e:
+                st.error(f"Demo failed: {str(e)}")
+
+# 🎥 Video Capture Demos
+elif demo_type == "Video Capture":
+    st.subheader("🎥 Video Vanguards")
+    demo = st.selectbox("Pick a Video Demo", ["opencv-python", "vidgear"])
+    if st.button("Run Video Demo"):
+        with st.spinner("Capturing video frame..."):
+            try:
+                if demo == "opencv-python":
+                    result = demo_opencv_image()  # Using image capture as a proxy
+                    if result:
+                        st.image(result, caption="Frame from OpenCV Video!")
+                    else:
+                        st.error("Camera not detected!")
+                elif demo == "vidgear":
+                    result = demo_vidgear()
+                    if result:
+                        st.image(result, caption="Frame from VidGear Video!")
+                    else:
+                        st.error("Camera not detected!")
+            except Exception as e:
+                st.error(f"Demo failed: {str(e)}")
+
+# 📊 Results Display
+st.write("### Results")
+st.write("Check out your impressive outputs above!")