diff --git a/fishbase/fish_http_status.py b/fishbase/fish_http_status.py
new file mode 100644
index 0000000..1a4b069
--- /dev/null
+++ b/fishbase/fish_http_status.py
@@ -0,0 +1,163 @@
+"""
+
+``fish_http_status`` 包含最通用的一些网络状态码
+
+https://github.com/openstack/swift/blob/master/swift/common/http.py
+
+"""
+
+
+def is_informational(status):
+    """
+    检查状态码是否信息提示
+
+    :param:
+        * status: http 状态码
+    :return:
+        * result: True or False
+    """
+    return 100 <= status <= 199
+
+
+def is_success(status):
+    """
+    检查状态码是否成功
+
+    :param:
+        * status: http 状态码
+    :return:
+        * result: True or False
+    """
+    return 200 <= status <= 299
+
+
+def is_redirection(status):
+    """
+    检查状态码是否重定向
+
+    :param:
+        * status: http 状态码
+    :return:
+        * result: True or False
+    """
+    return 300 <= status <= 399
+
+
+def is_client_error(status):
+    """
+    检查状态码是否客户端错误
+
+    :param:
+        * status: http 状态码
+    :return:
+        * result: True or False
+    """
+    return 400 <= status <= 499
+
+
+def is_server_error(status):
+    """
+    检查状态码是否服务端错误
+
+    :param:
+        * status: http 状态码
+    :return:
+        * result: True or False
+    """
+    return 500 <= status <= 599
+
+
+# List of HTTP status codes
+
+###############################################################################
+# 1xx Informational
+###############################################################################
+
+
+HTTP_CONTINUE = 100
+HTTP_SWITCHING_PROTOCOLS = 101
+HTTP_PROCESSING = 102  # WebDAV
+HTTP_CHECKPOINT = 103
+HTTP_REQUEST_URI_TOO_LONG = 122
+
+###############################################################################
+# 2xx Success
+###############################################################################
+
+HTTP_OK = 200
+HTTP_CREATED = 201
+HTTP_ACCEPTED = 202
+HTTP_NON_AUTHORITATIVE_INFORMATION = 203
+HTTP_NO_CONTENT = 204
+HTTP_RESET_CONTENT = 205
+HTTP_PARTIAL_CONTENT = 206
+HTTP_MULTI_STATUS = 207  # WebDAV
+HTTP_IM_USED = 226
+
+###############################################################################
+# 3xx Redirection
+###############################################################################
+
+HTTP_MULTIPLE_CHOICES = 300
+HTTP_MOVED_PERMANENTLY = 301
+HTTP_FOUND = 302
+HTTP_SEE_OTHER = 303
+HTTP_NOT_MODIFIED = 304
+HTTP_USE_PROXY = 305
+HTTP_SWITCH_PROXY = 306
+HTTP_TEMPORARY_REDIRECT = 307
+HTTP_RESUME_INCOMPLETE = 308
+
+###############################################################################
+# 4xx Client Error
+###############################################################################
+
+HTTP_BAD_REQUEST = 400
+HTTP_UNAUTHORIZED = 401
+HTTP_PAYMENT_REQUIRED = 402
+HTTP_FORBIDDEN = 403
+HTTP_NOT_FOUND = 404
+HTTP_METHOD_NOT_ALLOWED = 405
+HTTP_NOT_ACCEPTABLE = 406
+HTTP_PROXY_AUTHENTICATION_REQUIRED = 407
+HTTP_REQUEST_TIMEOUT = 408
+HTTP_CONFLICT = 409
+HTTP_GONE = 410
+HTTP_LENGTH_REQUIRED = 411
+HTTP_PRECONDITION_FAILED = 412
+HTTP_REQUEST_ENTITY_TOO_LARGE = 413
+HTTP_REQUEST_URI_TOO_LONG = 414
+HTTP_UNSUPPORTED_MEDIA_TYPE = 415
+HTTP_REQUESTED_RANGE_NOT_SATISFIABLE = 416
+HTTP_EXPECTATION_FAILED = 417
+HTTP_IM_A_TEAPOT = 418
+HTTP_UNPROCESSABLE_ENTITY = 422  # WebDAV
+HTTP_LOCKED = 423  # WebDAV
+HTTP_FAILED_DEPENDENCY = 424  # WebDAV
+HTTP_UNORDERED_COLLECTION = 425
+HTTP_UPGRADE_REQUIED = 426
+HTTP_PRECONDITION_REQUIRED = 428
+HTTP_TOO_MANY_REQUESTS = 429
+HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE = 431
+HTTP_NO_RESPONSE = 444
+HTTP_RETRY_WITH = 449
+HTTP_BLOCKED_BY_WINDOWS_PARENTAL_CONTROLS = 450
+HTTP_CLIENT_CLOSED_REQUEST = 499
+
+###############################################################################
+# 5xx Server Error
+###############################################################################
+
+HTTP_INTERNAL_SERVER_ERROR = 500
+HTTP_NOT_IMPLEMENTED = 501
+HTTP_BAD_GATEWAY = 502
+HTTP_SERVICE_UNAVAILABLE = 503
+HTTP_GATEWAY_TIMEOUT = 504
+HTTP_VERSION_NOT_SUPPORTED = 505
+HTTP_VARIANT_ALSO_NEGOTIATES = 506
+HTTP_INSUFFICIENT_STORAGE = 507  # WebDAV
+HTTP_BANDWIDTH_LIMIT_EXCEEDED = 509
+HTTP_NOT_EXTENDED = 510
+HTTP_NETWORK_AUTHENTICATION_REQUIRED = 511
+HTTP_NETWORK_READ_TIMEOUT_ERROR = 598     # not used in RFC
+HTTP_NETWORK_CONNECT_TIMEOUT_ERROR = 599  # not used in RFC
diff --git a/fishbase/fish_project.py b/fishbase/fish_project.py
index 8d4c54b..2117286 100644
--- a/fishbase/fish_project.py
+++ b/fishbase/fish_project.py
@@ -10,6 +10,10 @@
 import yaml
 import os
 
+try:
+    from yaml import CLoader as Loader, CDumper as Dumper
+except ImportError:
+    from yaml import Loader, Dumper
 
 package_yml = """
 project: hellopackage
@@ -102,7 +106,9 @@ def init_project_by_yml(project_config=None, dist=None):
     if os.path.isfile(project_config):
         project_config = open(project_config)
     try:
-        yml_data = yaml.load(project_config)
+        yml_data = yaml.load(project_config, Loader=Loader)
+        if not yml_data or type(yml_data) != dict:
+            raise RuntimeError('fail to load')
         project_name = yml_data['project']
         project_tree = yml_data['tree']
     except Exception as e:
diff --git a/test/test_http_status.py b/test/test_http_status.py
new file mode 100644
index 0000000..bbeb75c
--- /dev/null
+++ b/test/test_http_status.py
@@ -0,0 +1,30 @@
+from fishbase.fish_http_status import *
+
+
+class TestHttpStatus(object):
+
+    def setup_method(self):
+        self.BAD_HTTP_STATUS = -1
+
+    def teardown_method(self):
+        self.BAD_HTTP_STATUS = None
+
+    def test_status_informational(self):
+        assert is_informational(HTTP_CONTINUE) is True
+        assert is_informational(self.BAD_HTTP_STATUS) is False
+
+    def test_status_success(self):
+        assert is_success(HTTP_OK) is True
+        assert is_success(self.BAD_HTTP_STATUS) is False
+
+    def test_status_redirection(self):
+        assert is_redirection(HTTP_MULTIPLE_CHOICES) is True
+        assert is_redirection(self.BAD_HTTP_STATUS) is False
+
+    def test_status_client_error(self):
+        assert is_client_error(HTTP_BAD_REQUEST) is True
+        assert is_client_error(self.BAD_HTTP_STATUS) is False
+
+    def test_status_server_error(self):
+        assert is_server_error(HTTP_INTERNAL_SERVER_ERROR) is True
+        assert is_server_error(self.BAD_HTTP_STATUS) is False
diff --git a/test/test_project.py b/test/test_project.py
index ea52fe3..7410ba9 100644
--- a/test/test_project.py
+++ b/test/test_project.py
@@ -1,12 +1,30 @@
 # coding=utf-8
 import os
 import shutil
+
+import pytest
+
 from fishbase.fish_project import init_project_by_yml
 
 
 # 2018.6.27 v1.0.14 #73 create by Jia ChunYing
 class TestProject(object):
 
+    def test_load_bad_01(self):
+        """
+        empty file
+        """
+        base_dir = os.path.dirname(os.path.abspath(__file__))
+        target_file = base_dir + os.sep + 'test_project_with_empty_file.yaml'
+        with open(target_file, 'wb') as f:
+            f.close()
+        with pytest.raises(KeyError) as e:
+            init_project_by_yml(target_file, '.')
+        exec_msg = e.value.args[0]
+        assert exec_msg == 'project config format Error: fail to load'
+        os.remove(target_file)
+
+
     def test_init_project_by_yml(self):
         # define yml string
         package_yml = '''