diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
old mode 100644
new mode 100755
index ebcfedbb7ce..612d7f37e89
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
@@ -78,7 +78,8 @@ public class FlaskConnexionCodegen extends DefaultCodegen implements CodegenConf
                     "and", "del", "from", "not", "while", "as", "elif", "global", "or", "with",
                     "assert", "else", "if", "pass", "yield", "break", "except", "import",
                     "print", "class", "exec", "in", "raise", "continue", "finally", "is",
-                    "return", "def", "for", "lambda", "try", "self", "None", "True", "False", "nonlocal"));
+                    "return", "def", "for", "lambda", "try", "self", "None", "True", "False", "nonlocal",
+                    "float", "int", "str", "date", "datetime"));
 
         // set the output folder here
         outputFolder = "generated-code/connexion";
diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/PythonClientCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/PythonClientCodegen.java
index 6d7015cda3f..bc5e4c994ac 100755
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/PythonClientCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/PythonClientCodegen.java
@@ -107,7 +107,8 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
                     "and", "del", "from", "not", "while", "as", "elif", "global", "or", "with",
                     "assert", "else", "if", "pass", "yield", "break", "except", "import",
                     "print", "class", "exec", "in", "raise", "continue", "finally", "is",
-                    "return", "def", "for", "lambda", "try", "self", "nonlocal", "None", "True", "False"));
+                    "return", "def", "for", "lambda", "try", "self", "nonlocal", "None", "True", "nonlocal",
+                    "float", "int", "str", "date", "datetime"));
 
         regexModifiers = new HashMap<Character, String>();
         regexModifiers.put('i', "IGNORECASE");