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Unable to use any Anaconda features even though its installed

I have installed Anaconda from its site and was working fine for sometime, however I needed to install Plotly and used the below steps mentioned in another site.
I just got it up and running on spyder 3.0 using the following steps. (windows 10)
Download plotly using pip usig command line (python -m pip install plotly) this requires downloading python 3.5 separately from Spyder as well. (so far I haven’t had any conflicts)
In Spyder, goto->Tools ->PYTHONPATH Manager -> addPath -> insert path to Plotly library (mine was in python\python36-32\Lib\site-packages), then synchronize
Restart Spyder
test it out with import plotly.plotly \n import plotly.graph_objs as go in a new .py scrypt
Hope it works out for you.
Cheers
After the above steps I was able to import plotly in Spyder and didn't face any issues, however after I restarted my machine I'm unable to run Anaconda navigator or Spyder.
I'm able to launch Anaconda prompt but any command executed returns different kinds of errors like
"conda install anaconda-navigator"
environment variables:
conda info could not be constructed.
KeyError('pkgs_dirs')
"spyder"
ImportError: cannot import name 'constants' from partially initialized module 'zmq.backend.cython' (most likely due to a circular import) (C:\Python\Lib\site-packages\zmq\backend\cython_init_.py)
anaconda-navigator
ImportError: DLL load failed while importing shell: The specified module could not be found.
I tried every solution on internet like uninstalling and reinstalling, deleting all the trace files on anaconda and even the Environment variables seem to be fine
echo %PATH% command returns
C:\ProgramData\Anaconda3;C:\ProgramData\Anaconda3\Library\mingw-w64\bin;C:\ProgramData\Anaconda3\Library\usr\bin;C:\ProgramData\Anaconda3\Library\bin;C:\ProgramData\Anaconda3\Scripts;C:\ProgramData\Anaconda3\bin;C:\ProgramData\Anaconda3\condabin;C:\Python\Scripts;C:\Python;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0;C:\windows\System32\OpenSSH;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\NVIDIA Corporation\NVIDIA NvDLISR;C:\Program Files\nodejs;C:\Program Files\Microsoft VS Code\bin;C:\Users\saish\AppData\Local\Programs\Python\Python38;C:\Program Files\Java\jre1.8.0_301\bin;C:\apache-zookeeper-3.7.0\bin;C:\Spark\spark-3.0.2-bin-hadoop2.7\bin;C:\hadoop\bin;C:\Users\saish\AppData\Local\Microsoft\WindowsApps;C:\Users\saish\AppData\Roaming\np
where python command returns
C:\ProgramData\Anaconda3\python.exe
C:\Users\saish\AppData\Local\Microsoft\WindowsApps\python.exe
Please suggest any new measures other than the ones I have mentioned. Thanks in advance

Per this github issue, you may have a conflict between dependencies of packages anaconda installed and the one you installed manually. Check your pythonpath and see if removing the pip folder from the pythonpath fixes the issue.

Visual Studio Code is rejecting the Tensorflow installation in a Virtual Environment

I created a virtual environment called env using
python -m venv env
.\env\Scripts\activate.bat
pip install tensorflow
I verified tensorflow is in the env\Lib\site-packages folder
Next I loaded VS Code and created a workspace, added a python file, it prompted me to install pylint,
I typed in python: select interpreter and I browsed to C:\Users\admin\env\Scripts folder
This is the command line at the beginning of the script
(env) PS C:\Users\admin\env\project> cd 'c:\Users\admin\env\project'; & 'C:\Users\admin\env\Scripts\python.exe' 'c:\Users\admin\.vscode\extensions\ms-python.python-2020.8.106424\pythonFiles\lib\python\debugpy\launcher' '54436' '--' 'c:\Users\admin\env\project\face_gan.py'
This is the error I get when debugging the python file:
ImportError: Keras requires TensorFlow 2.2 or higher. Install TensorFlow via `pip install tensorflow`
PS C:\Users\admin\env\project> & C:/Users/admin/env/Scripts/Activate.ps1
When I type in pip install tensorflow in VS Code terminal, it shows its already installed
(env) PS C:\Users\admin\env\project> pip install tensorflow
Requirement already satisfied: tensorflow in c:\users\admin\env\lib\site-packages (2.3.0)
I don't understand this, is it not running in virtual environment?
Why is it executing C:/Users/admin/env/Scripts/Activate.ps1 at the end of the debugging session, not at the beginning
Lastly, is running python from the virtual environment folder C:\Users\admin\env\Scripts the same as using the activate.bat file or the source command? Does it automatically defer to using the C:\Users\admin\env\Lib folder, or is it still trying to use the default python installation to look for Tensorflow?
What step did I miss to make it use the virtual environment correct in VS Code?

First question: executing C:/Users/admin/env/Scripts/Activate.ps1 after debugging command make no difference. It just because it's the first command of the terminal. You can run it again to make a try.
Second question: Yes, that's the same. In your case, it will add 'C:\Users\admin\env' and 'C:\Users\admin\env\lib\site-packages' path to the PYTHONPATH variable.
You can through these codes to get the PYTHONPATH(the default search path for module files) variable value:
import sys
print(sys.path)
If you import 'tensorflow' directly. you will find you can import it correctly. It's a version problem. You should downgrade the version of the packages, and you can refer to this comment to get some useful information.

Installing gdal with conda and setting environmental variables

I have been trying to get the gdal library work using Python 2.7 and Anaconda in Windows 8 environment.
Besides gdal, I have also installed libgdal (frankly, I don't really understand the difference between the two). I now seem to have gdal 2.1.0 and 2.0.2 as well as libgdal 2.1.0.
However, when I run my Py code, there is a gdal error:
'gdalwarp' is not recognized as an internal or external command,
operable program or batch file.
I have already set the GDAL_DATA environmental variable to point to
C:\Anaconda\pkgs\libgdal-2.1.0-vc9_0\Library\share\gdal
I have also added a path, although I am not entirely sure where this should point to:
C:\Anaconda\pkgs\libgdal-2.1.0-vc9_0\Library\bin
I have tried the same with gdal 2.0.2 without success. gdalwarp.exe does seem to exist under libgdal 2.1.0 and gdal 2.0.2.
Any ideas? Is there an issue with the installation or have I not set the environmental variables correctly?
FYI, I have tried various installation commands, notably:
conda install gdal
conda install -c conda-forge gdal
conda install -c anaconda gdal
Addendum: I have found a manual solution: I set the GDAL_DATA and PATH variables in the terminal (pointing to libgdal 2.1.0) before running the code...
However, there is still an issue when I run my Py code: it is supposed to convert a tiff file to shp with gdal_polygonize:
cmd = 'gdal_polygonize.py %s -f "ESRI Shapefile" %s'%(dst_tif, dst_shp)
There is no error but the shapefile is not created (which leads to an error later on in the code). Any ideas as to why gdal is still not working correctly?
I have tried pointing the env variables to osgeo:
set PATH=%PATH%;C:\Anaconda2\Lib\site-packages\osgeo\scripts
set GDAL_DATA=C:\Anaconda2\Lib\site-packages\osgeo\data\gdal
Gdalinfo works but the gdal_polygonize used in my Py code does not appear to work.

The key is the activation script which is (potentially) executed when activating the environment. Not every GDAL build for Conda contains this. In my experience recent Conda-Forge builds are really good.
With your requirements of py27 and GDAL 2.1 i can get it working by following these steps:
1) Create a new environment: conda create -n gdaltest python=2.7
2) Activate: activate gdaltest
3) Install GDAL: conda install gdal=2.1 -c conda-forge
4) Reactivate environment: deactivate + activate gdaltest
This forces the just installed activation script to be executed, this sets the environment variables.
If i start python and run os.system("gdalinfo"), i can see its picked up correctly. And running os.environ['GDAL_DATA'] confirms the path is set correctly.
You can view the (de)activation script yourself at:
C:\Miniconda3\envs\<env name>\etc\conda\activate.d\gdal-activate.bat
A few years ago this didn't work as well as it does today, so make sure you have a recent Conda version (4.3.x) etc.
The benefit of this method is, that when switching environments, your paths are also changed accordingly. A "hard coded" GDAL_DATA path could potentially cause some compatibility issues if you mix and match different GDAL versions (although normally is should work OK).

How do prevent pip and easy_install from removing the temporary directories?

I need to debug some failures to install packages using pip and it seems that once I get the error pip is removing all the temporary files, preventing me from looking inside and finding what happened.
The gist below contains the error that I get but I do want to find-out which config file is generating this error and all the files from tmp are removed by the time the script ends.
https://gist.github.com/ssbarnea/b373062dd45de92735c7482b2735c5fb

From my experience with pip 19.0.3, it is sufficient to use the --no-clean option, which is available to both pip install and pip wheel.
It can also be specified in the respective sections of the pip configuration file:
[install]
no-clean = true
[wheel]
no-clean = true

How to change default install location for pip

I'm trying to install Pandas using pip, but I'm having a bit of trouble. I just ran sudo pip install pandas which successfully downloaded pandas. However, it did not get downloaded to the location that I wanted. Here's what I see when I use pip show pandas:
---
Name: pandas
Version: 0.14.0
Location: /Library/Python/2.7/site-packages/pandas-0.14.0-py2.7-macosx-10.9-intel.egg
Requires: python-dateutil, pytz, numpy
So it is installed. But I was confused when I created a new Python Project and searched under System Libs/lib/python for pandas, because it didn't show up. Some of the other packages that I've downloaded in the past did show up, however, so I tried to take a look at where those were. Running pip show numpy (which I can import with no problem) yielded:
---
Name: numpy
Version: 1.6.2
Location: /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python
Requires:
Which is in a completely different directory. For the sake of confirming my error, I ran pip install pyquery to see where it would be downloaded to, and got:
Name: pyquery
Version: 1.2.8
Location: /Library/Python/2.7/site-packages
Requires: lxml, cssselect
So the same place as pandas...
How do I change the default download location for pip so that these packages are downloaded to the same location that numpy is in?
Note: There were a few similar questions that I saw when searching for a solution, but I didn't see anything that mentioned permanently changing the default location.

According to pip documentation at
http://pip.readthedocs.org/en/stable/user_guide/#configuration
You will need to specify the default install location within a pip.ini file, which, also according to the website above is usually located as follows
On Unix and Mac OS X the configuration file is: $HOME/.pip/pip.conf
On Windows, the configuration file is: %HOME%\pip\pip.ini
The %HOME% is located in C:\Users\Bob on windows assuming your name is Bob
On linux the $HOME directory can be located by using cd ~
You may have to create the pip.ini file when you find your pip directory. Within your pip.ini or pip.config you will then need to put (assuming your on windows) something like
[global]
target=C:\Users\Bob\Desktop
Except that you would replace C:\Users\Bob\Desktop with whatever path you desire. If you are on Linux you would replace it with something like /usr/local/your/path
After saving the command would then be
pip install pandas
However, the program you install might assume it will be installed in a certain directory and might not work as a result of being installed elsewhere.

You can set the following environment variable:
PIP_TARGET=/path/to/pip/dir
https://pip.pypa.io/en/stable/user_guide/#environment-variables

Open Terminal and type:
pip config set global.target /Users/Bob/Library/Python/3.8/lib/python/site-packages
except instead of
/Users/Bob/Library/Python/3.8/lib/python/site-packages
you would use whatever directory you want.

Follow these steps
pip config set global.target D:\site-packages to change install path
or py -m pip config --user --editor notepad edit
[global]
target = D:\site-packages
set environment variable to use download import xxx
PIP_TARGET=site-packages
PYTHONPATH=site-packages
3.pip config unset global.target, to upgrade pip py -m pip install --upgrade pip

#Austin's answer is outdated, here for more up-to-date solution:
According to pip documentation at
https://pip.pypa.io/en/stable/topics/configuration/
You will need to specify the default install location within a configuration file, which, also according to the website above is usually located as follows
Mac OS
$HOME/Library/Application Support/pip/pip.conf if directory $HOME/Library/Application Support/pip exists else $HOME/.config/pip/pip.conf.
The legacy “per-user” configuration file is also loaded, if it exists: $HOME/.pip/pip.conf.
The $HOME folder can be located by navigating to ~/ (cmd+shift+G in Finder; cmd+shift+. to show hidden files).
Windows
%APPDATA%\pip\pip.ini
The legacy “per-user” configuration file is also loaded, if it exists: %HOME%\pip\pip.ini
The %HOME% is located in C:\Users\Bob on windows assuming your username is Bob
Unix
$HOME/.config/pip/pip.conf, which respects the XDG_CONFIG_HOME environment variable.
The legacy “per-user” configuration file is also loaded, if it exists: $HOME/.pip/pip.conf.
On linux the $HOME directory can be located by using cd ~
You may have to create the configuration file when you find your pip directory. Put something like
[global]
target = /Library/Frameworks/Python.framework/Versions/Current/lib/python3.10/site-packages/
if you are on a Mac. Except that you would replace /Library/Frameworks/Python.framework/Versions/Current/lib/python3.10/site-packages/ with whatever path you desire. If you are on Linux you would replace it with something like /usr/local/your/path
After saving the command would then be
pip install pandas
However, the program you install might assume it will be installed in a certain directory and might not work as a result of being installed elsewhere.
Please note that
pip3 install pandas
might be the solution if your packages gets installed in the Python2 folder vs Python3.