解决Python虚拟环境virtual

$: python manage.py runserver 80
Performing system checks...
 
System check identified no issues (0 silenced).
March 15, 2018 - 07:43:40
Django version 2.0.3, using settings 'helloworld.settings'
Starting development server at http://127.0.0.1:80/
Quit the server with CONTROL-C.
Error: You don't have permission to access that port.

$: ~/python3env/helloworld$ sudo python manage.py runserver 80
Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    "Couldn't import Django. Are you sure it's installed and "
ImportError: Couldn't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable? Did you forget to activate a virtual environment?

$: python
Python 3.5.2 (default, Nov 23 2017, 16:37:01) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import django
>>> django.__version__
'2.0.3'

$: sudo python
Python 2.7.12 (default, Dec  4 2017, 14:50:18) 
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import django
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named django

$: sudo which python
/usr/bin/python
$: which python
/home/hzc/python3env/venv/bin/python

$: sudo ../venv/bin/python manage.py runserver 80
Performing system checks...

System check identified no issues (0 silenced).
March 15, 2018 - 07:55:29
Django version 2.0.3, using settings 'helloworld.settings'
Starting development server at http://127.0.0.1:80/
Quit the server with CONTROL-C.

#!/usr/bin/env python 更改前
#!/home/hzc/python3env/venv/bin/python 更改后

$: sudo ./manage.py runserver 80
Performing system checks...

System check identified no issues (0 silenced).
March 15, 2018 - 08:02:48
Django version 2.0.3, using settings 'helloworld.settings'
Starting development server at http://127.0.0.1:80/
Quit the server with CONTROL-C.
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