Update app.py

app.py

@@ -1,36 +1,38 @@
 import gradio as gr
 import pandas as pd
+import tempfile
 
-def process_file(file_path):
+def process_file(file):
 
-    df = pd.read_excel(file_path, header=None)
+    # read excel
+    df = pd.read_excel(file.name, header=None)
 
     # delete first 4 rows
     df = df.iloc[4:].reset_index(drop=True)
 
-    # ensure at least 10 columns
+    # ensure columns up to J exist
     while df.shape[1] < 10:
         df[df.shape[1]] = ""
 
-    # convert column I and J to numbers safely
+    # convert I and J to numbers safely
     df.iloc[:,8] = pd.to_numeric(df.iloc[:,8], errors="coerce").fillna(0)
     df.iloc[:,9] = pd.to_numeric(df.iloc[:,9], errors="coerce").fillna(0)
 
-    # H = I - J
+    # column H = I - J
     df.iloc[:,7] = df.iloc[:,8] - df.iloc[:,9]
 
-    # save CSV
-    output_file = "/tmp/output.csv"
-    df.to_csv(output_file, index=False, header=False)
+    # create temp csv
+    tmp = tempfile.NamedTemporaryFile(delete=False, suffix=".csv")
+    df.to_csv(tmp.name, index=False, header=False)
 
-    return output_file
+    return tmp.name
 
 
 demo = gr.Interface(
     fn=process_file,
-    inputs=gr.File(type="filepath", label="Upload Excel File"),
+    inputs=gr.File(label="Upload Excel File"),
     outputs=gr.File(label="Download CSV"),
-    title="Excel to CSV Tool"
+    title="Excel → CSV Tool"
 )
 
 demo.launch()