add new task

practica/stepik/stepik_tasks/test.py

@@ -0,0 +1,25 @@
+def find_average(x):
+    return sum(x) / len(x)
+
+med = 0
+math = [] #математика
+ph = [] #физика
+ru = [] # русский
+with open ('text.txt', 'r', encoding='utf-8') as f, open ('test.txt', 'w', encoding='utf-8') as f1:
+    lines = [line.split() for line in f]
+    li = 0 #кол-во строк
+    for i in lines:
+        for parts in i:
+            li+=1 #кол-во строк
+            y = parts.split(';') #
+            med = [int(y[1]),int(y[2]),int(y[3])] # среднее арифметическое каждого ученика
+            a = [int(item) for item in med]
+            f1.write(str(find_average(a)) + '\n')
+            math += [int(y[1])]
+            ph += [int(y[2])]
+            ru += [int(y[3])]
+    f1.write(' '.join([(str(find_average(math))), (str(find_average(ph))),(str(find_average(ru)))]))
+
+  
+
+