Fix escape sequence

Author: 张英奇

term/term.py

@@ -512,8 +512,8 @@ def EmptyBuf():
 
 def InitializeTCP(host_port):
 
-    ValidIpAddressRegex = re.compile("^((([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])):(\d+)$")
-    ValidHostnameRegex = re.compile("^((([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])):(\d+)$")
+    ValidIpAddressRegex = re.compile("^((([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])):(\\d+)$")
+    ValidHostnameRegex = re.compile("^((([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\-]*[a-zA-Z0-9])\\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\\-]*[A-Za-z0-9])):(\\d+)$")
 
     if ValidIpAddressRegex.search(host_port) is None and \
         ValidHostnameRegex.search(host_port) is None: