Django set default form values
I have a Model as follows:
python
Two way/reverse map
You have a “Conversation” object. It refers to two Persons. Since a Person can have multiple conversations, you have a many-to-many relationship.
Why are packages installed rather than just linked to a specific environment?
I’ve noticed that normally when packages are installed using various package managers (for python), they are installed in /home/user/anaconda3/envs/env_name/ on conda and in /home/user/anaconda3/envs/env_name/lib/python3.6/lib-packages/ using pip on conda.
selenium.common.exceptions.InvalidSelectorException with “span:contains(‘string’)”
I am working on selenium python in firefox. I am trying to find element by css selector
Python script to do something at the same time every day
I have a long running python script that I want to do someting at 01:00 every morning. I have been looking at the sched module and at the Timer object but I can’t see how to use these to achieve this. Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all … Read more
Detecting consecutive integers in a list
I have a list containing data as such: [1, 2, 3, 4, 7, 8, 10, 11, 12, 13, 14] I’d like to print out the ranges of consecutive integers: 1-4, 7-8, 10-14 Is there a built-in/fast/efficient way of doing this? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the … Read more
Finding max value in the second column of a nested list?
I have a list like this:
How to check whether a file is empty or not
I have a text file. How can I check whether it’s empty or not?
What does Pythonic mean?
On many websites I often see comments that code isn’t Pythonic, or that there is a more Pythonic way to achieve the same goal. What does Pythonic mean in this context? For example, why is while i < someValue: do_something(list[i]) i += 1 not Pythonic while for x in list: doSomething(x) is Pythonic? Answers: Thank … Read more
Calling Java/Scala function from a task
Exception: It appears that you are attempting to reference SparkContext from a broadcast variable, action, or transforamtion. SparkContext can only be used on the driver, not in code that it run on workers. For more information, see SPARK-5063.