Update app.py

app.py

@@ -23,10 +23,10 @@ def subset_year(year = 50):
     return edges
 
 def splitIsnad(dataframe):
-  teacher_student =dataframe['Edge_Name'].str.split(' TO ')
-  dataframe['Teacher'] = teacher_student.apply(lambda x: x[0])
-  dataframe['Student'] = teacher_student.apply(lambda x: x[1])
-  return dataframe
+    teacher_student =dataframe['Edge_Name'].str.split(' TO ')
+    dataframe['Teacher'] = teacher_student.apply(lambda x: x[0])
+    dataframe['Student'] = teacher_student.apply(lambda x: x[1])
+    return dataframe