* 3.9_12 add eq, ne

mod_oop/3.9_12_matrix.py

@@ -67,6 +67,13 @@ P.S. В программе нужно объявить только класс.
 ---
 >>> Matrix(2, 2) - 2
 Matrix([[-2, -2], [-2, -2]])
+
+>>> Matrix(2, 2) == Matrix([[0, 0], [0, 0]])
+True
+>>> Matrix(2, 2, 2) == [[2, 2], [2, 2]]
+True
+>>> Matrix(2, 2, 2) == [[2, -2], [2, 2]]
+False
 """
 
 from functools import singledispatchmethod
@@ -146,18 +153,6 @@ class Matrix:
                 new_row.append(value)
             self.data.append(new_row)
 
-    def __repr__(self):
-        return f"{self.__class__.__name__}({self.data!r})"
-
-    def __len__(self):
-        return self.rows
-
-    def __iter__(self):
-        return (
-            (self.cells[row][col].data for col in range(self.cols))
-            for row in range(self.rows)
-        )
-
     def validate_index(self, index):
         if not isinstance(index, tuple):
             raise IndexError("недопустимые значения индексов")
@@ -204,6 +199,28 @@ class Matrix:
             )
         ]
 
+    def __len__(self):
+        return self.rows
+
+    def __iter__(self):
+        return (
+            (self.cells[row][col].data for col in range(self.cols))
+            for row in range(self.rows)
+        )
+
+    def __eq__(self, other):
+        if isinstance(other, self.__class__):
+            return self.data == other.data
+        if isinstance(other, list):
+            return self.data == other
+        return NotImplemented
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({self.data!r})"
+
 
 def tests():
     # 10x = https://stepik.org/lesson/701994/step/12?discussion=5990560&unit=702095