diff --git a/prime_gen004(change).py b/prime_gen004(change).py
new file mode 100644
index 0000000..36fa2fc
--- /dev/null
+++ b/prime_gen004(change).py
@@ -0,0 +1,27 @@
+def prime_generator(top = 0):
+    primes: list = []
+    number = 1
+    while number < top:
+        number += 1
+        if len(primes) == 0 and number == 2:
+            primes.append(number)
+            yield number
+        j = len(primes) - 1
+        while j >= 0:
+            if number % primes[j] == 0:
+                break
+            j -= 1
+            if j == -1:
+                primes.append(number)
+                yield number
+
+
+
+'''Проверка выражений'''
+prime_list = [n for n in prime_generator(258)]
+prime_gen_object = (n for n in prime_generator(123))
+
+print(prime_list)
+print(prime_gen_object)
+for i in prime_gen_object:
+    print(i, end=", ")
diff --git a/task1.py b/task1.py
new file mode 100644
index 0000000..211f06b
--- /dev/null
+++ b/task1.py
@@ -0,0 +1,20 @@
+def implicit_int(cls):
+    def wrapper(self, item):
+        if hasattr(object, item):
+            return object.__getattr__(self, attr)
+        else:
+            return 0
+    cls.__getattr__ = wrapper
+    return cls
+
+'''Тесты'''
+
+@implicit_int
+class A:
+    x = -1
+
+a = A()
+print(a)
+print(a.x)
+print(a.e)
+print(a.e + 589)  # Вывод: 589
diff --git a/task2.py b/task2.py
new file mode 100644
index 0000000..a2c4716
--- /dev/null
+++ b/task2.py
@@ -0,0 +1,31 @@
+import time
+
+'''Вспомогательная функция для тестов'''
+def Sum(m):
+    s = 0
+    for i in range(0, m):
+        s += i
+    return s
+
+'''Менеджер контекста'''
+class Timer():
+    def __init__(self):
+        self.start = None
+         
+    def __enter__(self):
+        self.start = time.time()
+        return self
+     
+    def __exit__(self, exc_type, exc_value, exc_traceback):
+        print(time.time() - self.start)
+
+'''Проверка Менеджера контекста'''
+with Timer():
+    with Timer():
+        print(Sum(1000))
+        
+    with Timer():
+        print('sum: ' + str(Sum(10000000)), end=', time: ')
+        
+    with Timer():
+        time.sleep(1.4)