python-3.x

问题 I'm trying to create a function that automatically delete an object after 5 minutes from publication. from django.contrib.gis.db import models from django.utils import timezone import datetime class Event(models.Model): name = models.CharField( max_length=100, ) publishing_date = models.DateTimeField( default=timezone.now, blank=True, ) @property def delete_after_five_minutes(self): time = self.publishing_date + datetime.timedelta(minutes=5) if time > datetime.datetime.now(): e = Event

问题 I am trying to set the default python in my docker container to be python3 and have set the aliases in the dockerfile. When I open the .bashrc file, they show up. As far as I can tell, it should work but the default python version is still 2.7. if I run which python, it will still point to usr/bin/python rather than python3. Same with pip. Can anyone tell me what the problem is? Here is the command I'm using to alias: RUN \ echo 'alias python="/usr/bin/python3"' >> /root/.bashrc && \ echo

问题 I am trying to set the default python in my docker container to be python3 and have set the aliases in the dockerfile. When I open the .bashrc file, they show up. As far as I can tell, it should work but the default python version is still 2.7. if I run which python, it will still point to usr/bin/python rather than python3. Same with pip. Can anyone tell me what the problem is? Here is the command I'm using to alias: RUN \ echo 'alias python="/usr/bin/python3"' >> /root/.bashrc && \ echo

问题 I am trying to set the default python in my docker container to be python3 and have set the aliases in the dockerfile. When I open the .bashrc file, they show up. As far as I can tell, it should work but the default python version is still 2.7. if I run which python, it will still point to usr/bin/python rather than python3. Same with pip. Can anyone tell me what the problem is? Here is the command I'm using to alias: RUN \ echo 'alias python="/usr/bin/python3"' >> /root/.bashrc && \ echo

问题 I'm trying to create a function that automatically delete an object after 5 minutes from publication. from django.contrib.gis.db import models from django.utils import timezone import datetime class Event(models.Model): name = models.CharField( max_length=100, ) publishing_date = models.DateTimeField( default=timezone.now, blank=True, ) @property def delete_after_five_minutes(self): time = self.publishing_date + datetime.timedelta(minutes=5) if time > datetime.datetime.now(): e = Event

问题 I am trying to use random.sample and random.choice to make a simple game. What I want to do is get 8 words randomly from the candidateWords list (this list has 100 words) and then randomly pick 1 word out to be the answer. Right now the for loop is showing all my words from the candidateWords list and at one = random.choice(candidateWords) is not picking the chosen word from the 8 words. I haven't able to generate 8 words in the first place so I know why this isn't working properly. import

问题 I am trying to use random.sample and random.choice to make a simple game. What I want to do is get 8 words randomly from the candidateWords list (this list has 100 words) and then randomly pick 1 word out to be the answer. Right now the for loop is showing all my words from the candidateWords list and at one = random.choice(candidateWords) is not picking the chosen word from the 8 words. I haven't able to generate 8 words in the first place so I know why this isn't working properly. import

问题 I am trying to use random.sample and random.choice to make a simple game. What I want to do is get 8 words randomly from the candidateWords list (this list has 100 words) and then randomly pick 1 word out to be the answer. Right now the for loop is showing all my words from the candidateWords list and at one = random.choice(candidateWords) is not picking the chosen word from the 8 words. I haven't able to generate 8 words in the first place so I know why this isn't working properly. import

问题 I've constructed a window in pyqt5, which by clicking on "optimize" button, the program reads the "Gurobi-model.lp" file(click here to get the file), and optimizes it by the help of the Gurobi software. How can I display the logs of the Gurobi on a QTextBrowser? I found some functions in the Gurobi such as OutputFlag, LogFile, LogToConsole. However, I searched a lot, and I didn't understand these functions might be helpful for me or not. Anybody can help me in this regard? For those who are

问题 how to run multiple files of python simultaneously I have three files pop.py pop1.py pop2.py i want to run this file concurrently this files are getting run one by one python code to run all files 回答1: Make main() function in every python file and then import all the files in your main file. Then call all main functions. from . import pop from . import pop1 # and so on # and now call all main functions pop.main() pop1.main() # and so on 回答2: You can easily accomplish this with the subprocess