Create app.py

app.py

@@ -0,0 +1,33 @@
+# app.py
+
+import streamlit as st
+from unit_conversion_program import *
+
+st.title("Unit Conversion Tool")
+st.write("Select a category and conversion to perform the desired unit transformation.")
+
+# Define categories and available conversions
+categories = {
+    "Length": [("Micrometers to Nanometers", micrometers_to_nanometers),
+               ("Angstroms to Nanometers", angstroms_to_nanometers),
+               ("Light-Years to Kilometers", light_years_to_kilometers)],
+    "Mass": [("Tons (US) to Kilograms", tons_us_to_kilograms)],
+    # Add more categories and conversions as needed
+}
+
+# Select a category
+category = st.selectbox("Select a category:", list(categories.keys()))
+
+if category:
+    # Select a conversion
+    conversions = categories[category]
+    conversion_name = st.selectbox("Select a conversion:", [c[0] for c in conversions])
+    func = {c[0]: c[1] for c in conversions}[conversion_name]
+
+    # Input the value to convert
+    value = st.number_input(f"Enter value for {conversion_name}:", min_value=0.0)
+
+    # Perform conversion
+    if st.button("Convert"):
+        result = func(value)
+        st.success(f"Result: {result}")