From 16ef1ffa758b1d1c2d866a329b193cee92d0ad87 Mon Sep 17 00:00:00 2001
From: osmala <ossi.laine@utu.fi>
Date: Wed, 20 May 2020 12:47:53 +0300
Subject: [PATCH] Added utils module

---
 app/utils.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 app/utils.py

diff --git a/app/utils.py b/app/utils.py
new file mode 100644
index 0000000..f7a9d25
--- /dev/null
+++ b/app/utils.py
@@ -0,0 +1,17 @@
+from itertools import zip_longest
+
+
+def map_values_to_int(values: dict):
+    values = [map(int, i) for i in list(values.values())]
+    return zip_longest(*values, fillvalue=None)
+
+
+def calculate_mean(values: list) -> float:
+    n_answers = sum(x is not None for x in values)
+    sum_of_answers = float(sum(filter(None, values)))
+    mean = sum_of_answers / n_answers
+    return round(mean, 2)
+
+
+def get_mean_from_slider_answers(answers):
+    return [calculate_mean(values) for values in map_values_to_int(answers)]
-- 
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