Add possility to list available bilan

notes_tools/tools/__init__.py

@@ -2,7 +2,7 @@
 # encoding: utf-8
 
 
-from .extract import extract_flat_marks, get_class_ws
+from .extract import extract_flat_marks, get_class_ws, list_classes
 from .df_marks_manip import digest_flat_df#, students_pov
 #from .eval_tools import select_eval, get_present_absent, keep_only_presents
 from .plottings import radar_graph

notes_tools/tools/extract.py

@@ -51,7 +51,7 @@ def check_students(dfs, notStudent = notStudent):
     dfs_students = [extract_students(df) for df in dfs]
 
     if not are_equal(dfs_students):
-        raise ValueError("Not same list of students between df1 = {} ans df2 = {}".format(df1, df2))
+        raise ValueError("Not same list of students amoung worksheets")
 
     return dfs_students[0]