I tried many methods and saw an 
explanation on the Internet. I think it should be the python version, so I upgraded the python version in Anaconda navigator. Then enter 
in Anaconda prompt
You can successfully open the Jupiter notebook page
Here’s how to upgrade Python
If you also encounter this problem, it means you don’t understand where tensorflow is
After installing Anaconda 3.6, set interpreter in pycharm. This interpreter determines how to execute the code you write in pycharm environment
If your setting is python.exe under anaconda. You will find that import tensorflow is written in pycharm When as TF, an error will be reported, indicating that there is no tensorflow module. This is because python.exe in Anaconda file is version 3.6, and the CONDA environment you created is under anaconda, and the tensorflow you installed is in CONDA environment, not Anaconda environment. Therefore, if you want to import tensorflow, you need to select python.exe in CONDA environment as the interpreter
When your interpreter selects python.exe under Anaconda in the red box shown in the figure below, you will be prompted that the tensorflow module is not found when importing tensorflow in pycharm environment
If you want to use tensorflow, the interpreter should choose the following path (Anaconda – > envs-> tenfowflow-> Python.exe under python. Exe)
The correct selection of the interpreter is shown in the figure. Click the setting button indicated by the arrow in the figure below, select add local, and select python.exe of the path shown in the figure above instead of python.exe under anaconda. After selecting python.exe under CONDA environment, the settings shown in the red box in the figure below will be displayed
Explain the function of static keyword and final keyword in Java in detail>>> 
When installing tensorflow, there was an error that DLL file could not be found when using import tensorflow. Referring to many solutions of blogs and stackflow, we found that only the version number did not match, but it did not specify what version was the right one. Therefore, we wrote this pit avoiding guide. Thank you again for your guidance and help
Author’s environment:
Python version 3.6
Tensorflow version 1.14
ImportError: Could not find ‘cudart64_ 100.dll’
Brief answer:
Carefully analyze the types and causes of errors
Find out your tensorflow and CUDA version
Using the corresponding version to solve the problem, complete the adaptation of CUDA and TF, cudnn and CUDA, protobuf and TF
I. causes of error types
The problem is that we can’t find the module of CUDA system DLL file, so we need to download cuda10.0. First, check whether the file exists in CUDA’s path
Access CUDA through the path of C:// program files/NVIDIA GPU computing toolkit/CUDA, and find out whether cudart64 exists in its bin directory_ 100.dll module
If yes, check whether the environment variable is added; If not, it may be the matching problem between CUDA version and tensorflow version
2. Find out your tensorflow and CUDA version
Enter the command line environment, first through Python — version to determine their own Python version is 3.6
Then check the installed tensorflow version through PIP list. The version of the author is 1.14
Check CUDA version through nvcc — version. The previous CUDA version is v9.0.176
Find the corresponding version information through the official website of tesnsorflow
You can see that when tensorflow’s version & gt= 1.13, CUDA version needs to be 10.0, and cudnn version number needs to be greater than 7.4.1
Here I choose to unload CUDA version to apply tensorflow version
Directly enter the path of C:// program files/NVIDIA GPU computing toolkit/CUDA to delete the folder and environment variables
Found a high school students to build the server download link, here the download speed will be faster:
How much is circumcision in Wuxi http://www.bhnkyixue.com/
The corresponding cudnn corresponds to CUDA version
After installing CUDA version, open jupyter again and run import tensorflow. It is found that it is not successful, and the ‘cudnn64’ is not found_ Error in 7. DLL ‘:
ImportError: Could not find ‘cudnn64_ 7.dll’
This prompt indicates that the DLL file of cudnn module is missing. According to the tensorflow document, cudnn should be > 7.4.1. Download cudnn. The directory structure of cudnn is as follows:
Put the files in cudnn directory in CUDA directory
4. Match the corresponding protobuf to the corresponding TF version
At this time, there should be no problem. The author continued to run import tensorflow, MMP, but it did not run smoothly. There was a “descriptor” error
ImportError: cannot import name ‘descriptor’
Summary of TF installation problems on stackflow
Through searching on stackflow, it is found that the reason for this error is that the versions of protobuf and TF do not correspond, because there is a dependency relationship between TF and pro. Therefore, the author will first install pro, then install TF, and finally re install TF. TF will automatically install the dependency pro
There was a little episode in the middle. The author used virtualenv’s py virtual environment, so after installing the version, the error of ‘descriptor’ still appeared, so I tested it in the native py environment and found that TF can be imported. The reason is that the system can’t find the sitepackage in the PY virtual environment. If the directory in py bin of the virtual environment is set as the environment variable, it can be called normally
The final result is imported successfully
import pandas as pd
import numpy as np
import tensorflow as tf train_input_data = pd.read_excel('new_data/4.12.2.xlsx',header=None,sheetname='train') train_input_data = np.array(train_input_data).ravel() train_input_data = list(train_input_data) train_input_data = tf.constant(train_input_data,dtype=tf.float32) train_output_data = train_input_data test_input_data = pd.read_excel('new_data/4.12.2.xlsx',header=None,sheetname='test') test_input_data = np.array(test_input_data).ravel() test_input_data = list(test_input_data) test_input_data = tf.constant(test_input_data,shape=[270,1],dtype=tf.float32) test_output_data = test_input_data print(type(train_input_data)) fc_mean, fc_var = tf.nn.moments(train_input_data,axes=[0]) scale = tf.Variable(tf.ones([1])) shift = tf.Variable(tf.zeros([1])) epslion = 0.001 train_input_data = tf.nn.batch_normalization(train_input_data,fc_mean,fc_var,shift,scale,epslion) sess = tf.Session() sess.run(train_input_data)Traceback (most recent call last):
File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1327, in _do_call
return fn(*args)
File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1306, in _run_fn status, run_metadata) File "/Users/zhangjia/anaconda/lib/python3.6/contextlib.py", line 89, in __exit__ next(self.gen) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/framework/errors_impl.py", line 466, in raise_exception_on_not_ok_status pywrap_tensorflow.TF_GetCode(status)) tensorflow.python.framework.errors_impl.FailedPreconditionError: Attempting to use uninitialized value Variable_1 [[Node: Variable_1/read = Identity[T=DT_FLOAT, _class=["loc:@Variable_1"], _device="/job:localhost/replica:0/task:0/cpu:0"](Variable_1)]] During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/Users/zhangjia/PycharmProjects/太阳能预测/test.py", line 30, in <module> a = sess.run(train_input_data) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 895, in run run_metadata_ptr) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1124, in _run feed_dict_tensor, options, run_metadata) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1321, in _do_run options, run_metadata) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1340, in _do_call raise type(e)(node_def, op, message) tensorflow.python.framework.errors_impl.FailedPreconditionError: Attempting to use uninitialized value Variable_1 [[Node: Variable_1/read = Identity[T=DT_FLOAT, _class=["loc:@Variable_1"], _device="/job:localhost/replica:0/task:0/cpu:0"](Variable_1)]] Caused by op 'Variable_1/read', defined at: File "/Users/zhangjia/PycharmProjects/太阳能预测/test.py", line 21, in <module> shift = tf.Variable(tf.zeros([1])) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/ops/variables.py", line 199, in __init__ expected_shape=expected_shape) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/ops/variables.py", line 330, in _init_from_args self._snapshot = array_ops.identity(self._variable, name="read") File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/ops/gen_array_ops.py", line 1400, in identity result = _op_def_lib.apply_op("Identity", input=input, name=name) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/framework/op_def_library.py", line 767, in apply_op op_def=op_def) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/framework/ops.py", line 2630, in create_op original_op=self._default_original_op, op_def=op_def) File "/Users/zhangjia/anaconda/lib/python3.6/site-packages/tensorflow/python/framework/ops.py", line 1204, in __init__ self._traceback = self._graph._extract_stack() # pylint: disable=protected-access FailedPreconditionError (see above for traceback): Attempting to use uninitialized value Variable_1 [[Node: Variable_1/read = Identity[T=DT_FLOAT, _class=["loc:@Variable_1"], _device="/job:localhost/replica:0/task:0/cpu:0"](Variable_1)]] tf.global is not used_ variables_ Initializer () function to initialize variables, resulting in errors in code tf.global to the code_ variables_ After initializer () function is used to initialize the data, the problem ofcan be solved
import pandas as pd import numpy as np import tensorflow as tf train_input_data = pd.read_excel('new_data/4.12.2.xlsx',header=None,sheetname='train') train_input_data = np.array(train_input_data).ravel() train_input_data = list(train_input_data) train_input_data = tf.constant(train_input_data,dtype=tf.float32) train_output_data = train_input_data test_input_data = pd.read_excel('new_data/4.12.2.xlsx',header=None,sheetname='test') test_input_data = np.array(test_input_data).ravel() test_input_data = list(test_input_data) test_input_data = tf.constant(test_input_data,shape=[270,1],dtype=tf.float32) test_output_data = test_input_data fc_mean, fc_var = tf.nn.moments(train_input_data,axes=[0]) scale = tf.Variable(tf.ones([1])) shift = tf.Variable(tf.zeros([1])) epslion = 0.001 train_input_data = tf.nn.batch_normalization(train_input_data,fc_mean,fc_var,shift,scale,epslion) sess = tf.Session() init = tf.global_variables_initializer() sess.run(init) data, vocabulary = prepare_test_data(config) model = CaptionGenerator(config) init = tf.global_variables_initializer() sess.run(init) model.load(sess, FLAGS.model_file) tf.get_default_graph().finalize() model.test(sess, data, vocabulary)
Why can’t you stop buying 618?From the technical dimension to explore>>> 
The GPU version of tensorflow encountered blas GEMM launch failed error during model training, or keras encountered the same error (keras generally takes tensorflow as the backend, if the GPU version of tensorflow is installed, GPU will be preferred when using keras)
InternalError (see above for traceback): Blas GEMM launch failed : a.shape=(300, 1), b.shape=(1, 10), m=300, n=10, k=1This is when calling GPU, the video memory allocation encountered a problem. The way to compare security is to allocate memory space for tensorflow or keras before model training. Tensorflow creates a session with the following statement
gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.333)
sess = tf.Session(config=tf.ConfigProto(gpu_options=gpu_options))The parameters of keras are set when keras is introduced
import tensorflow as tf
from keras.backend.tensorflow_backend import set_session
config = tf.ConfigProto()
config.gpu_options.allocator_type = 'BFC' #A "Best-fit with coalescing" algorithm, simplified from a version of dlmalloc.
config.gpu_options.per_process_gpu_memory_fraction = 0.3
config.gpu_options.allow_growth = True
set_session(tf.Session(config=config))If you use IPython notebook, GPU sync failed may appear after completing the above settings, and it should be OK to restart it
From: https://blog.csdn.net/Leo_ Xu06/article/details/82023330
I tried the useful of tensorflow, record it
Geeks, please accept the hero post of 2021 Microsoft x Intel hacking contest>>> 
After installing tensorflow 2.0, when using session, an error is reported: module ‘tensorflow’ has no attribute ‘session’:
Source code:
import tensorflow as tf
import os
os.environ["CUDA_VISIBLE_DEVICES"]="0"
a=tf.constant(2)
b=tf.constant(3)
with tf.Session() as sess:
print("a:%i" % sess.run(a),"b:%i" % sess.run(b))
print("Additionwithconstants:%i" % sess.run(a+b))
print("Multiplicationwithconstant:%i" % sess.run(a*b))Error message:
The error means that the tensorflow module does not have the session attribute. Later, we found that there is no session attribute in tensorflow 2.0. If you are installing tensorflow 2.0 and want to use the session attribute, you can change TF. Session() to:
tf.compat.v1.Session()This method can solve this kind of problem, not only for session attribute
When running again, the program reported another error:
The reason is that version 2.0 is not compatible with version 1.0
tf.compat.v1.disable_eager_execution()It’s going to work
The official website of tensorflow_ eager_ The execution () method is interpreted as follows:
This function can only be called before any Graphs, Ops, or Tensors have been created.
It can be used at the beginning of the program for complex migration projects from TensorFlow 1.x to 2.x.
translation: this function can only be called before creating any graph, operation or tensor. It can be used at the beginning of a complex migration project from tensorflow 1. X to 2. X
First of all, my environment:
os : windows10
anaconda版本：2.7
The official website provides two ways to install TensorFlow: PIP and anaconda. I use the anaconda method. After the installation is completed, you can import TensorFlow or run the program on the command line. Then I use the command Jupiter notebook to start Jupiter notebook in the created environment named TensorFlow. However, there is only python2 in the options of Jupiter notebook, and there is no newly installed environment, As shown in the following figure:
and when Import tensorflow as TF is executed, an error will occur: no module named TensorFlow
Enter the anaconda command line, and then select TensorFlow environment:
> activate tensorflow
Execute the following command:
> conda install nb_conda
After the installation, start jupyter Notebook:
> jupyter notebook
At this time, you can see that the options for creating a file include our established environment TensorFlow
.
If you select TensorFlow environment and then Import tensorflow as TF , no error will occur
Knowledge map advanced must read: read how large-scale map data efficient storage and retrieval>>> 
Installing collected packages: numpy, scipy, six, pyyaml, Keras, opencv-python, h5py, html5lib, bleach, futures, wheel, werkzeug, markdown, protobuf, tensorflow-tensorboard, pbr, funcsigs, mock, backports.weakref, tensorflow
Found existing installation: numpy 1.14.1
Uninstalling numpy-1.14.1:
Successfully uninstalled numpy-1.14.1
Found existing installation: scipy 0.13.0b1
DEPRECATION: Uninstalling a distutils installed project (scipy) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
Uninstalling scipy-0.13.0b1:
Exception:
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/Library/Python/2.7/site-packages/pip/commands/install.py", line 342, in run
prefix=options.prefix_path,
File "/Library/Python/2.7/site-packages/pip/req/req_set.py", line 778, in install
requirement.uninstall(auto_confirm=True)
File "/Library/Python/2.7/site-packages/pip/req/req_install.py", line 754, in uninstall
paths_to_remove.remove(auto_confirm)
File "/Library/Python/2.7/site-packages/pip/req/req_uninstall.py", line 115, in remove
renames(path, new_path)
File "/Library/Python/2.7/site-packages/pip/utils/__init__.py", line 267, in renames
shutil.move(old, new)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 302, in move
copy2(src, real_dst)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 131, in copy2
copystat(src, dst)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 103, in copystat
os.chflags(dst, st.st_flags)
OSError: [Errno 1] Operation not permitted: '/tmp/pip-k6sIvY-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/scipy-0.13.0b1-py2.7.egg-info'
First of all, I think of the problem of directory permissions, so I don’t know how many times’ Chmod 755 ‘has been implemented, and it doesn’t work
Is that because there is something wrong with the ownership of the directory?It’s a new way to modify the “chown usename” and it’s still useless
Finally, we had to Google and found this article: https://www.jianshu.com/p/7a18c78b5982 Yes, he solved my problem. He just needs a little upgrade to the old package. Here is a record of the executed commands as follows:
$ pip install --upgrade pip
$ sudo pip install numpy --upgrade --ignore-installed
$ sudo pip install scipy --upgrade --ignore-installed
$ sudo pip install scikit-learn --upgrade --ignore-installed
No solution, but it does not seem to affect the use of
(py36) C:\Users\LEEG>conda install numpy
Collecting package metadata: done
Solving environment: |
The environment is inconsistent, please check the package plan carefully
The following packages are causing the inconsistency:
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::anaconda==4.4.0=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::astropy==1.3.2=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::blaze==0.10.1=py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::bottleneck==1.2.1=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::dask==0.14.3=py36_1
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::distributed==1.16.3=py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::matplotlib==2.0.2=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::numba==0.33.0=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::numexpr==2.6.2=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::odo==0.5.0=py36_1
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::pandas==0.20.1=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::patsy==0.4.1=py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::pytables==3.2.2=np112py36_4
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::pywavelets==0.5.2=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::scikit-image==0.13.0=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::scikit-learn==0.18.1=np112py36_1
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::scipy==0.19.0=np112py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64::seaborn==0.7.1=py36_0
– https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64::statsmodels==0.8.0=np112py36_0
Windows 10
Python3.6
Tensorflow 1.9.0
tf.add_to_collection('losses', tf.contrib.layers.l2_regularizer(regularizer)(w))
tensorflow.python.framework.errors_impl.NotFoundError: D:\Users\Administrator\Anaconda3\lib\site-packages\tensorflow\contrib\data\python\ops…._dataset_ops.so not found
Go to the tensorflow/contrib/data directory and delete **_dataset_ops.so** 