diff --git a/week3_network/tcp_client.py b/week3_network/tcp_client.py
new file mode 100644
index 0000000..3a56104
--- /dev/null
+++ b/week3_network/tcp_client.py
@@ -0,0 +1,17 @@
+import socket
+
+HOST = "127.0.0.1"
+PORT = 5000
+
+client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+client_socket.connect((HOST, PORT))
+
+message = "hello tcp server"
+print(f"Отправлено сообщение: {message}")
+
+client_socket.sendall(message.encode("utf-8"))
+
+data = client_socket.recv(1024).decode("utf-8")
+print(f"Ответ сервера: {data}")
+
+client_socket.close()
\ No newline at end of file
diff --git a/week3_network/tcp_server.py b/week3_network/tcp_server.py
new file mode 100644
index 0000000..c6c06ff
--- /dev/null
+++ b/week3_network/tcp_server.py
@@ -0,0 +1,25 @@
+import socket
+
+HOST = "127.0.0.1"
+PORT = 5000
+
+server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+server_socket.bind((HOST, PORT))
+server_socket.listen(1)
+
+print(f"TCP-сервер запущен на {HOST}:{PORT}")
+print("Ожидание подключения клиента...")
+
+conn, addr = server_socket.accept()
+print(f"Подключился клиент: {addr}")
+
+data = conn.recv(1024).decode("utf-8")
+print(f"Получено сообщение: {data}")
+
+response = data.upper()
+conn.sendall(response.encode("utf-8"))
+
+conn.close()
+server_socket.close()
+
+print("TCP-сервер завершил работу.")
\ No newline at end of file
diff --git a/week3_network/udp_client.py b/week3_network/udp_client.py
new file mode 100644
index 0000000..a54e1de
--- /dev/null
+++ b/week3_network/udp_client.py
@@ -0,0 +1,16 @@
+import socket
+
+HOST = "127.0.0.1"
+PORT = 5001
+
+client_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+
+message = "hello udp server"
+print(f"Отправлено сообщение: {message}")
+
+client_socket.sendto(message.encode("utf-8"), (HOST, PORT))
+
+data, addr = client_socket.recvfrom(1024)
+print(f"Ответ сервера: {data.decode('utf-8')}")
+
+client_socket.close()
\ No newline at end of file
diff --git a/week3_network/udp_server.py b/week3_network/udp_server.py
new file mode 100644
index 0000000..6b095f2
--- /dev/null
+++ b/week3_network/udp_server.py
@@ -0,0 +1,22 @@
+import socket
+
+HOST = "127.0.0.1"
+PORT = 5001
+
+server_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+server_socket.bind((HOST, PORT))
+
+print(f"UDP-сервер запущен на {HOST}:{PORT}")
+print("Ожидание сообщения...")
+
+data, addr = server_socket.recvfrom(1024)
+message = data.decode("utf-8")
+
+print(f"Получено сообщение от {addr}: {message}")
+
+response = message.upper()
+server_socket.sendto(response.encode("utf-8"), addr)
+
+server_socket.close()
+
+print("UDP-сервер завершил работу.")
\ No newline at end of file