SyntaxError: Generator expression must be parenthesized


狂风中的少年 提交于 2019-12-08 14:36:01

问题


I just installed django and after installing that I created a django project and was trying to run django server by command:

python manage.py runserver

After that I'am getting error as: SyntaxError: Generator expression must be parenthesized


回答1:


TL; DR Update Django to the latest revision.


This error is a known incompatibility related to Python issue #32012. Projects based on Django 1.11.16 and below will raise this exception when started with Python 3.7. A patch for this issue has been merged into Django 2.0 and 2.1 branches as well as Django 1.11.17.

Note: Python 3.7 is officially supported by Django 1.11.17 and above, including any 2.x branch.




回答2:


Generator expression must be parenthesized

> Update Django version to 1.11.17

pip install django==1.11.17



回答3:


Had same issue. This is how I changed to django version 2.0 and used python3

  • $pip3 install django==2.0
  • $python3 manage.py runserver



回答4:


Just open file: venv/lib/python3.7/site-packages/django/contrib/admin/widgets.py and replace the lines

related_url += '?' + '&'.join(
    '%s=%s' % (k, v) for k, v in params.items(),)

with

related_url += '?' + '&'.join('%s=%s' % (k, v) for k, v in params.items())



回答5:


Just open file venv/lib/python3.7/site-packages/django/contrib/admin/widgets.py and replace the lines

related_url += '?' + '&'.join(
    '%s=%s' % (k, v) for k, v in params.items(),
)

with

related_url += '?' + '&'.join('%s=%s' % (k, v) for k, v in params.items())


来源:https://stackoverflow.com/questions/51265858/syntaxerror-generator-expression-must-be-parenthesized

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