Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/tensorflow/python/platform/self_check.py: 48%

1# Copyright 2017 The TensorFlow Authors. All Rights Reserved. 

2# 

3# Licensed under the Apache License, Version 2.0 (the "License"); 

4# you may not use this file except in compliance with the License. 

5# You may obtain a copy of the License at 

6# 

7# http://www.apache.org/licenses/LICENSE-2.0 

8# 

9# Unless required by applicable law or agreed to in writing, software 

10# distributed under the License is distributed on an "AS IS" BASIS, 

11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

12# See the License for the specific language governing permissions and 

13# limitations under the License. 

14# ============================================================================== 

15 

16"""Platform-specific code for checking the integrity of the TensorFlow build.""" 

17import ctypes 

18import os 

19 

20MSVCP_DLL_NAMES = "msvcp_dll_names" 

21 

22try: 

23 from tensorflow.python.platform import build_info 

24except ImportError: 

25 raise ImportError("Could not import tensorflow. Do not import tensorflow " 

26 "from its source directory; change directory to outside " 

27 "the TensorFlow source tree, and relaunch your Python " 

28 "interpreter from there.") 

29 

30 

31def preload_check(): 

32 """Raises an exception if the environment is not correctly configured. 

33 

34 Raises: 

35 ImportError: If the check detects that the environment is not correctly 

36 configured, and attempting to load the TensorFlow runtime will fail. 

37 """ 

38 if os.name == "nt": 

39 # Attempt to load any DLLs that the Python extension depends on before 

40 # we load the Python extension, so that we can raise an actionable error 

41 # message if they are not found. 

42 if MSVCP_DLL_NAMES in build_info.build_info: 

43 missing = [] 

44 for dll_name in build_info.build_info[MSVCP_DLL_NAMES].split(","): 

45 try: 

46 ctypes.WinDLL(dll_name) 

47 except OSError: 

48 missing.append(dll_name) 

49 if missing: 

50 raise ImportError( 

51 "Could not find the DLL(s) %r. TensorFlow requires that these DLLs " 

52 "be installed in a directory that is named in your %%PATH%% " 

53 "environment variable. You may install these DLLs by downloading " 

54 '"Microsoft C++ Redistributable for Visual Studio 2015, 2017 and ' 

55 '2019" for your platform from this URL: ' 

56 "https://support.microsoft.com/help/2977003/the-latest-supported-visual-c-downloads" 

57 % " or ".join(missing)) 

58 else: 

59 # Load a library that performs CPU feature guard checking. Doing this here 

60 # as a preload check makes it more likely that we detect any CPU feature 

61 # incompatibilities before we trigger them (which would typically result in 

62 # SIGILL). 

63 from tensorflow.python.platform import _pywrap_cpu_feature_guard 

64 _pywrap_cpu_feature_guard.InfoAboutUnusedCPUFeatures()