Update app.py

app.py

@@ -130,6 +130,30 @@ ENGAGED_STR = 'Engaged (Respect, Responsibility, Effort)'
 PARTIALLY_ENGAGED_STR = 'Partially Engaged (about 50%)'
 NOT_ENGAGED_STR = 'Not Engaged (less than 50%)'
 
+def safe_convert_to_datetime(series, format_str=None):
+    try:
+        # Attempt to convert to datetime, ignoring errors
+        converted = pd.to_datetime(series, errors='coerce')
+        if format_str:
+            # Format if a format string is provided
+            return converted.dt.strftime(format_str)
+        return converted
+    except Exception as e:
+        print(f"Error converting series to datetime: {e}")
+        return series
+
+def format_session_data(df):
+    # Format "Date of Session" and "Timestamp" columns with safe conversion
+    df['Date of Session'] = safe_convert_to_datetime(df['Date of Session'], '%m/%d/%Y')
+    df['Timestamp'] = safe_convert_to_datetime(df['Timestamp'], '%I:%M %p')
+    df['Session Start Time'] = safe_convert_to_datetime(df['Session Start Time'], '%I:%M %p')
+    df['Session End Time'] = safe_convert_to_datetime(df['Session End Time'], '%I:%M %p')
+
+    # Reorder columns
+    df = df[['Date of Session', 'Timestamp'] + [col for col in df.columns if col not in ['Date of Session', 'Timestamp']]]
+
+    return df
+
 def main():
     st.title("Intervention Program Analysis")
 
@@ -141,12 +165,8 @@ def main():
             # Read the Excel file into a DataFrame
             df = pd.read_excel(uploaded_file)
 
-            # Format "Date of Session" and "Timestamp"
-            df['Date of Session'] = pd.to_datetime(df['Date of Session']).dt.strftime('%m/%d/%Y')
-            df['Timestamp'] = pd.to_datetime(df['Timestamp']).dt.strftime('%I:%M %p')
-            df['Session Start Time'] = pd.to_datetime(df['Session Start Time']).dt.strftime('%I:%M %p')
-            df['Session End Time'] = pd.to_datetime(df['Session End Time']).dt.strftime('%I:%M %p')
-            df = df[['Date of Session', 'Timestamp'] + [col for col in df.columns if col not in ['Date of Session', 'Timestamp']]]
+            # Format the session data
+            df = format_session_data(df)
 
             # Replace student names with initials
             df = replace_student_names_with_initials(df)