From 9d9a80686e59fb7e99dc820b40d02806c313a4d3 Mon Sep 17 00:00:00 2001 From: Benjamin Bertrand Date: Fri, 10 Mar 2017 09:27:26 +0300 Subject: [PATCH] Eval mark manipulation --- notes_tools/tools/bareme.py | 68 +++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 notes_tools/tools/bareme.py diff --git a/notes_tools/tools/bareme.py b/notes_tools/tools/bareme.py new file mode 100644 index 0000000..c8ba831 --- /dev/null +++ b/notes_tools/tools/bareme.py @@ -0,0 +1,68 @@ +#! /usr/bin/env python +# -*- coding: utf-8 -*- +# vim:fenc=utf-8 +# +# Copyright © 2017 lafrite +# +# Distributed under terms of the MIT license. + +""" +Manipulating rating scale of an evaluation. + +Those functions are made to be applied over eval_df +""" + +from .df_marks_manip import round_half_point, compute_mark_barem + +__all__ = [] + +def new_scale_min(x): + """ Change the scale by selecting min between scale and mark """ + return min(x["Mark_old"], x["Bareme"]) + +def new_scale_proportionnal(x): + """ Changing the scale proportionally """ + return round_half_point(x["Mark_old"] * x["Bareme"] / x["Bareme_old"]) + +def tranform_scale(eval_df, new_scale, method): + """ Change the rating scale of the exam + + It backups Bareme, Mark, Mark_barem columns adding "_old". The backup is done once then it is ignored. + + It changes Bareme value to new_scale, applies method to marks and remake mark_bareme + + :param eval_df: dataframe on evaluations + :param new_scale: replacement scale value + :param method: "min", "prop" or a function on eval_df rows + :returns: the transformed eval_df + + """ + for c in ["Bareme", "Mark", "Mark_barem"]: + try: + eval_df[c+"_old"] + except KeyError: + eval_df[c+"_old"] = eval_df[c] + + eval_df["Bareme"] = new_scale + + TRANFS = {"min": new_scale_min, + "prop": new_scale_proportionnal, + } + try: + t = TRANFS[method] + except KeyError: + eval_df["Mark"] = eval_df.apply(method) + else: + eval_df["Mark"] = eval_df.apply(t, axis=1) + + eval_df["Mark_barem"] = compute_mark_barem(eval_df) + return eval_df + + + + + +# ----------------------------- +# Reglages pour 'vim' +# vim:set autoindent expandtab tabstop=4 shiftwidth=4: +# cursor: 16 del