Update src/streamlit_app.py

src/streamlit_app.py

@@ -37,6 +37,7 @@ else:
 
 # ---------- UTILITIES ----------
 def read_file(uploaded_file):
+    """Read uploaded file and return DataFrame"""
     name = uploaded_file.name.lower()
     try:
         if name.endswith(('.csv', '.txt')):
@@ -163,8 +164,12 @@ with st.sidebar:
 uploaded_file = st.file_uploader("📂 Upload CSV or Excel file", type=['csv', 'xls', 'xlsx', 'txt'])
 
 if uploaded_file:
-    with st.spinner("Reading file..."):
-        raw_df = read_file(uploaded_file)
+    # ✅ FIX: Save to /tmp for Hugging Face Spaces compatibility
+    temp_path = os.path.join("/tmp", uploaded_file.name)
+    with open(temp_path, "wb") as f:
+        f.write(uploaded_file.getbuffer())
+    with open(temp_path, "rb") as f:
+        raw_df = read_file(f)
 
     if show_raw_preview:
         st.subheader("Raw Data Preview")