Python3 --Version Shows "Nameerror: Name 'Python3' Is Not Defined"

python3 --version shows NameError: name 'python3' is not defined

python3 is not Python syntax, it is the Python binary itself, the thing you run to get to the interactive interpreter.

You are confusing the command line with the Python prompt. Open a console (Windows) or terminal (Linux, Mac), the same place you'd use dir or ls to explore your filesystem from the command line.

If you are typing at a >>> or In [number]: prompt you are in the wrong place, that's the Python interpreter itself and it only takes Python syntax. If you started the Python prompt from a command line, exit at this point and go back to the command line. If you started the interpreter from IDLE or in an IDE, then you need to open a terminal or console as a separate program.

Other programs that people often confuse for Python syntax; each of these is actually a program to run in your command prompt:

• python, python2.7, python3.5, etc.
• pip or pip3
• virtualenv
• ipython
• easy_install
• django-admin
• conda
• flask
• scrapy
• setup.py -- this is a script you need to run with python setup.py [...].
• Any of the above together with sudo.

with many more variations possible depending on what tools and libraries you have installed and what you are trying to do.

If given arguments, you'll get a SyntaxError exception instead, but the underlying cause is the same:

>>> pip install foobar
  File "<stdin>", line 1
    pip install foobar
              ^
SyntaxError: invalid syntax

SLURM job. NameError: name 'python3' is not defined

Your submission script is a shell script, not a Python script. So the first line of your submission script should be

#!/usr/bin/env bash

rather than

#!/usr/bin/python3

Technically, you can submit a job script that is a Python script, but then the #SBATCH directives got directly in the Python script and that is the script you submit:

#!/usr/bin/python3

#SBATCH --job-name=testjob       # Job name
#SBATCH --output=job.%j.out      # Name of output file (%j expands to jobId)
#SBATCH --cpus-per-task=4        # Schedule one core
#SBATCH --gres=gpu               # Schedule a GPU
#SBATCH --time=71:59:59          # Run time (hh:mm:ss) - run for one hour max
#SBATCH --partition=red          # Run on either the Red or Brown queue
#SBATCH --mail-type=END          # Send an email when the job finishes
#SBATCH --export=ALL             # All of the users environment will be loaded from callers environment

import pandas as pd
import numpy as np
true = pd.read_csv("testfile.csv")
print('Just Testing. End for now.')

Then you can sbatch this Python script directly. But most often, using a Bash script is preferred to be able to setup the environment, change directories, copy files back and forth, etc. which is easier in Bash than in Python.

Why do I get NameError: name '_' is not defined when setting custom templates for djangocms-video?

In Django, the gettext_lazy(…) function [Django-doc] is often imported as _ to manage translations. This is explained in the Standard translation:

Python’s standard library gettext module installs _() into the global namespace, as an alias for gettext(). In Django, we have chosen not to follow this practice, for a couple of reasons

(…)

Because of how xgettext (used by makemessages) works, only functions that take a single string argument can be imported as _:

• gettext()
• gettext_lazy()

You thus should add:

from django.utils.translation import gettext_lazy as _

at the top of the file.

If you thus define something like _('Featured Version'), you can run makemessages to generate translation files and fill in the translation per language.

python3' is not recognized as an internal or external command, operable program or batch file

There is no python3.exe file, that is why it fails.

Try:

py

instead.

py is just a launcher for python.exe. If you have more than one python versions installed on your machine (2.x, 3.x) you can specify what version of python to launch by

py -2 or
py -3

Still getting NameError: name 'python' is not defined in the console even after adding PATH and ENV

The only valid keys for the .sublime-settings file are those in the default settings. I don't think there is an env or path key. In addition, the ST console is not a terminal console. It's a python shell. In addition, ST uses a bundled version of Python. You may be able to modify that, I'm not sure. Terminal integration is something that many users would like to have, but it isn't implemented yet.

From what you put, it looks like you are trying to create a new build file. These files have a .sublime-build extension. More information about build systems can be found here.

Hope that helps clarify some things about why it isn't working.

NameError: name 'python3' is not defined [Jenkins]

Question 1

Option 1:

Try to change the shebang so that it can run with a specific version of Python

#!/usr/bin/python2.6

Option 2:

Try to run it as python2 instead of python3

 python pythonscript/script.py

Question 2

You can use pwd to get the absolute path to your script. And you could then add that to the jenkins script.

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