python-3.x

问题 I am trying to create a virtual environment using mkvirtualenv with python 3 in Windows but the environment is created with python 2.7.My pip version is also from python 2.7 which i have avoided using py -m pip install virtualenvwrapper-win When i do mkvirtualenv test environment is created with python 2.7 Please help me with a solution Thanks in advance:) 回答1: If you would like to create a virtualenv with python 3.X having the version 2.X You just have to pass a parameter argument for your

问题 I am new to programming. I am trying to have my discord bot open up command prompt to confirm it can run, but I am getting this error: File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib\asyncio\proactor_events.py", line 116, in __del__ self.close() File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib\asyncio\proactor_events.py", line 108, in close self._loop.call_soon(self._call_connection_lost, None) File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib

问题 I am new to programming. I am trying to have my discord bot open up command prompt to confirm it can run, but I am getting this error: File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib\asyncio\proactor_events.py", line 116, in __del__ self.close() File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib\asyncio\proactor_events.py", line 108, in close self._loop.call_soon(self._call_connection_lost, None) File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib

问题 I am trying to check if a value exists inside a list with dictionaries. I use flask 1.0.2. See example below: person_list_dict = [ { "name": "John Doe", "email": "johndoe@mydomain.com", "rol": "admin" }, { "name": "John Smith", "email": "johnsmith@mydomain.com", "rol": "user" } ] I found two ways to solve this problem, can you tell me which is better?: First option: jinja2 built-in template filter "map" <pre>{% if "admin" in person_list_dict|map(attribute="rol") %}YES{% else %}NOPE{% endif %}

问题 I am trying to check if a value exists inside a list with dictionaries. I use flask 1.0.2. See example below: person_list_dict = [ { "name": "John Doe", "email": "johndoe@mydomain.com", "rol": "admin" }, { "name": "John Smith", "email": "johnsmith@mydomain.com", "rol": "user" } ] I found two ways to solve this problem, can you tell me which is better?: First option: jinja2 built-in template filter "map" <pre>{% if "admin" in person_list_dict|map(attribute="rol") %}YES{% else %}NOPE{% endif %}

问题 I've integrated django rest framework version 3.10 into an existing django 2.2 project, placing api root at /api . Now I'm trying to use coreapi cli client to upload some documents to the server. $ coreapi get http://localhost:8000/openapi <DownloadedFile '/root/.coreapi/downloads/openapi (4)', open 'rb'> $ coreapi get http://localhost:8000/api { "invoices": "http://localhost:8000/api/invoices/" } $ coreapi action invoices list Index ['invoices']['list'] did not reference a link. Key

问题 I've integrated django rest framework version 3.10 into an existing django 2.2 project, placing api root at /api . Now I'm trying to use coreapi cli client to upload some documents to the server. $ coreapi get http://localhost:8000/openapi <DownloadedFile '/root/.coreapi/downloads/openapi (4)', open 'rb'> $ coreapi get http://localhost:8000/api { "invoices": "http://localhost:8000/api/invoices/" } $ coreapi action invoices list Index ['invoices']['list'] did not reference a link. Key

问题 I've integrated django rest framework version 3.10 into an existing django 2.2 project, placing api root at /api . Now I'm trying to use coreapi cli client to upload some documents to the server. $ coreapi get http://localhost:8000/openapi <DownloadedFile '/root/.coreapi/downloads/openapi (4)', open 'rb'> $ coreapi get http://localhost:8000/api { "invoices": "http://localhost:8000/api/invoices/" } $ coreapi action invoices list Index ['invoices']['list'] did not reference a link. Key

问题 A test program #!/usr/bin/env python3 import sys count = 0 sys.stderr.write('stderr, order %d\n' % count) count += 1 sys.stdout.write('stdout, order %d\n' % count) count += 1 sys.stderr.write('stderr, order %d\n' % count) count += 1 sys.stdout.write('stdout, order %d\n' % count) when invoked through the terminal, the expected output is, stderr, order 0 stdout, order 1 stderr, order 2 stdout, order 3 In the interactive shell, when I redirect stdout to a PIPE, the output order is different from

问题 A test program #!/usr/bin/env python3 import sys count = 0 sys.stderr.write('stderr, order %d\n' % count) count += 1 sys.stdout.write('stdout, order %d\n' % count) count += 1 sys.stderr.write('stderr, order %d\n' % count) count += 1 sys.stdout.write('stdout, order %d\n' % count) when invoked through the terminal, the expected output is, stderr, order 0 stdout, order 1 stderr, order 2 stdout, order 3 In the interactive shell, when I redirect stdout to a PIPE, the output order is different from