9

I compiled Python 3.8.1 under a user's home directory with 

configure --prefix=/home/a_user/python3.8 --enable-shared
  1. When I tried to use venv, I get:
python3 -m venv test_env
Error: Command '['/home/a_user/test_env/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.
  1. test_env is created but incomplete:
test_env/
├── bin
│   ├── python -> python3
│   └── python3 -> /home/a_user/python3.8/bin/python3
├── include
├── lib
│   └── python3.8
│       └── site-packages
├── lib64 -> lib
└── pyvenv.cfg

6 directories, 3 files
  1. ensurepip does exist:
python3 -m ensurepip
Looking in links: /tmp/tmpeqrn78f5
Requirement already satisfied: setuptools in ./python3.8/lib/python3.8/site-packages (41.2.0)
Requirement already satisfied: pip in ./python3.8/lib/python3.8/site-packages (19.2.3)

So I am clueless as to what's missing.

Gino Mempin
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Richard
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  • What is your OS? – Gino Mempin Jan 02 '20 at 03:42
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    If you run that command manually – `test_env/bin/python3 -Im ensurepip --upgrade --default-pip` – does it show any output? – Ry- Jan 02 '20 at 03:52
  • I am using openSUSE LEAP 15.1 – Richard Jan 02 '20 at 04:09
  • Could not find platform dependent libraries Consider setting $PYTHONHOME to [:] Traceback (most recent call last): .... some lines removed File "/home/user/python3.8/lib/python3.8/tempfile.py", line 45, in from random import Random as _Random File "/home/user/python3.8/lib/python3.8/random.py", line 41, in from math import log as _log, exp as _exp, pi as _pi, e as _e, ceil as _ceil ModuleNotFoundError: No module named 'math' – Richard Jan 02 '20 at 04:11
  • If I remove the "I" and run ```test_env/bin/python3 -m ensurepip --upgrade --default-pip``` it works ```Looking in links: /tmp/tmp73vwpom8 Requirement already up-to-date: setuptools in ./test_env/lib/python3.8/site-packages (41.2.0) Requirement already up-to-date: pip in ./test_env/lib/python3.8/site-packages (19.2.3)``` – Richard Jan 02 '20 at 04:44
  • math module works fine in this test. ```test_env/bin/python3 Python 3.8.1 (default, Jan 2 2020, 02:56:40) [GCC 7.4.1 20190905 [gcc-7-branch revision 275407]] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import math >>> math.factorial(4) 24``` – Richard Jan 02 '20 at 04:50
  • I think the problem is with ```-Im```. According to help ```-I : isolate Python from the user's environment (implies -E and -s)```. And since my Python 3.8 is compiled to a custom directory, without the user's environment, of course it won't find it. – Richard Jan 02 '20 at 05:16
  • I am able to create a venv using the --without-pip option. python3 -m venv --without-pip test_env – Richard Jan 19 '20 at 05:15

4 Answers4

7

The final solution is:

python3 -m venv --without-pip test_env
source test_env/bin/activate
python3 -m ensurepip --upgrade
pip3 install --upgrade pip

Now the virtual env is fully set and working.

Richard
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1

Just updated to last python's version, the output says it all:

apt-get install python3-venv

After that creating env with

python3 -m venv test_venv

works as expected, creating activate scritp.

Cheers

Vadim
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1

To expand on Vadim's answer because I cannot comment yet.

So if your having problems check to see if your desired version of python-venv is available and install it.

Replace the 3.x with your version. If there are packages available they will show up in the output.

sudo apt search python3.7-venv

I had installed python3.7, so I did

sudo apt install python3.7-venv

instead of

sudo apt install python3-venv

tldr
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0

Just in case if you have fresh os install, install first pip by following commands

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py

After installing you can create virtual environment & would have activate script

Kaushal
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