add new task

practica/stepik/stepik_tasks/percentage_of_letters.py

@@ -52,4 +52,28 @@ with open ('text.txt', 'r') as text:
                 o = ''
                 t+=b
 with open ('test.txt', 'w') as text:
-    text.write(t)
+    text.write(t)
+
+# подсчет одинаковых слов и вывод самого большого кол-ва раз
+list = {}
+ind = 0
+len = 0
+full_list = []
+num = 0
+with open ('text.txt', 'r') as text:
+    lines = [line.split() for line in text]
+    for parts in lines:
+        full_list += parts
+        for words in full_list:
+            len +=1 
+            if ind != (len+1):
+                if words in full_list:
+                    n = full_list.count(words)
+                    list[words] = (n)
+            ind+=1
+    it = 0
+    for key, items in list.items():
+        if items > it:
+            it = items
+            it_key = key
+print (it_key, it)

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)))]))
+
+  
+
+