Since you are on Python 2, you need to execute using the virtualenv module that you installed. First step, as you originally tried to do, but this time you specify the “virtualenv” module and the name of the virtualenv. In this case flask: python -m virtualenv flask Then you activate your virtualenv like this: source … Read more
The recommended way by python.org The recommended way of managing virtual environments since Python 3.5 is with the venv module within the Python Standard Library itself. Source: https://docs.python.org/3/library/venv.html#creating-virtual-environments That is not the same as virtualenv, which is a third party package, outside the Python Standard Library. Source: https://pypi.org/project/virtualenv/ Dangerous to downgrade (and to upgrade) Depending … Read more
On Linux/Mac you can easily install multiple versions of Python next to the main one and you can use the venv package from the standard library to create virtual environments from each version >= 3.3. Create venv $ python3.3 -m venv myvenv_foo # Create a python3.4 venv named ‘myvenv_foo’ $ python3.4 -m venv myvenv_bar # … Read more
Looks like you are using Ubuntu 14.04. It was shipped with a broken pyvenv. There is a simple work around to create venv using Python 3 1. Create venv without pip python3 -m venv –without-pip test4 or pyvenv-3.4 –without-pip test4 2. Get pip in your env source test4/bin/activate curl https://bootstrap.pypa.io/get-pip.py | python deactivate source test4/bin/activate … Read more
I followed the below steps for python3.6 installation in ubuntu 14.04 and virtualenv pip installs works fine. Python 3.6 Installation: sudo apt-get install python3-dev libffi-dev libssl-dev wget https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tgz tar xvf Python-3.6.0.tgz cd Python-3.6.0 ./configure –enable-optimizations make -j8 sudo make altinstall python3.6 If seeing the following error — zipimport.ZipImportError: can’t decompress data; zlib not available make: … Read more
PyCharm relies on –build-dir to install packages and the flag was removed in the latest pip 20.3. The fix for PyCharm is ready and will be released this week in 2020.3 release (and backported to 2020.2.5 and 2020.1.5). The workaround is to downgrade pip to the previous version – close PyCharm and run python -m … Read more
Yes, delete the directory. it’s where executables for the venv and modules and libraries and entire other stuff for venvs is kept.
You can use sys.prefix to determine which virtualenv you’re in. import sys print(sys.prefix) from the sys docs A string giving the site-specific directory prefix where the platform independent Python files are installed
venv is a package shipped directly with python 3. So you don’t need to pip install anything. virtualenv instead is an independent library available at https://virtualenv.pypa.io/en/stable/ and can be install with pip. They solve the same problem and work in a very similar manner. If you use python3 I suggest to avoid an “extra” dependency … Read more
Here is my workflow after creating a folder and cd‘ing into it: virtualenv venv –distribute Output: New python executable in venv/bin/python Installing distribute………done. Installing pip…………….done. And source venv/bin/activate python