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Python Virtualenv Check Environment


Python Virtualenv Check Environment

By : daniel
Date : November 15 2020, 06:54 AM
I wish this help you You can check for the environment variable VIRTUAL_ENV and see if it has the correct source path. Now if it doesn't exist then you know it's not activated. If it does, you need to check and see if it has the correct path.
The correct bash snippet that will work to check if the variable is set or not is the following
code :
if [[ -z "$VIRTUAL_ENV" ]]; then
    echo "No VIRTUAL_ENV set"
else
    echo "VIRTUAL_ENV is set"
fi


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Is there a reason not to check in the virtualenv environment along with the source code of a python project?

Is there a reason not to check in the virtualenv environment along with the source code of a python project?


By : user1225472
Date : March 29 2020, 07:55 AM
Hope that helps Always try to check in the source, not the result of running a process.
A virtualenv is rather platform specific; a Windows virtualenv may require different binaries than one created on Linux. The paths in the script files will almost certainly use absolute paths, not relative paths, tying a virtualenv to a specific location on your harddisk.
How should I fork an existing python environment into a new environment using virtualenv?

How should I fork an existing python environment into a new environment using virtualenv?


By : Sohidul islam
Date : March 29 2020, 07:55 AM
like below fixes the issue Ideally, you should not copy virtualenvs - instead, you should track the packages you need and install them in the new virtualenv.
This is made much easier if you use pip:
code :
$ env1/bin/pip freeze > requirements.txt
$ env2/bin/pip install -r requirements.txt
Python (development environment): Install Python 3.5.2, pip, and virtualenv on Windows

Python (development environment): Install Python 3.5.2, pip, and virtualenv on Windows


By : Moreno
Date : March 29 2020, 07:55 AM
will be helpful for those in need virtualenvwrapper-powershell interacts nicely with Python 2.7. (https://pypi.python.org/pypi/virtualenvwrapper-powershell/2.7.1)
So, I suggest to install that as the system python AND then install Python 3.5.2 outside of the path.
With Python 2.7.15 on a MAC console, virtualenv creates an environment with a different version of Python

With Python 2.7.15 on a MAC console, virtualenv creates an environment with a different version of Python


By : Alexander Gorbylev
Date : March 29 2020, 07:55 AM
Hope this helps Thank you all for your input. I finally figured out how to solve it. The difficult part was finding out how to locate the place where python 2.7.15 was installed which I'll leave intact in the response since I found it by trial and error looking in other places. I have not found a command that gives you the full path (perhaps an expert can tell us how to go from the laconic which python to the full path).
What I find interesting is that it does not really matter what the console uses when calling virtualenv. What matters is the version of Python used to install virtualenv which is the default version that will be used.
code :
dhcp-18--41:WakeUp8 jbs$ virtualenv -p /usr/local/Cellar/python@2/2.7.15/bin/python env
Running virtualenv with interpreter /usr/local/Cellar/python@2/2.7.15/bin/python
New python executable in /Users/jbs/PycharmProjects/WakeUp8/env/bin/python2.7
Also creating executable in /Users/jbs/PycharmProjects/WakeUp8/env/bin/python
Installing setuptools, pip, wheel...done.
dhcp-18-189-34-41:WakeUp8 jbs$ python
Python 2.7.15 (default, May  1 2018, 16:44:14) 
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()

dhcp-18--41:WakeUp8 jbs$ pwd
/Users/jbs/PycharmProjects/WakeUp8

dhcp-18-189-34-41:WakeUp8 jbs$ source env/bin/activate

(env) dhcp-18-189-34-41:WakeUp8 jbs$ python
Python 2.7.15 (default, May  1 2018, 16:44:14) 
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 
How can I create a virtual environment with virtualenv for Python 3.7 without having to install Python 3.7 on my compute

How can I create a virtual environment with virtualenv for Python 3.7 without having to install Python 3.7 on my compute


By : AtSeanaz11
Date : March 29 2020, 07:55 AM
wish helps you You don't need to install Python 3.7 system-wide, but you do need to install it somewhere if you want to use it in a virtualenv. Easy options include via pyenv or pythonz.
If you install pyenv, install Python 3.7 via pyenv install 3.7, then create your virtualenv. Or use a higher-level tool like Pipenv, which can manage virtualenvs for you and install them via pyenv automatically:
code :
pipenv install --python 3.7
pip install --user pew[pythonz]
pew new -p $(pythonz locate 3.7) some-name
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