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Is it possible to filter a Django queryset by model property?
i have a method in my model:
@property
def myproperty(self):
[..]
and now i want to filter by this property like:
MyModel.objects.filter(myproperty=[..])
is this somehow possible?
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Filter by property __del__: Questions
How can I make a time delay in Python?
5 answers
I would like to know how to put a time delay in a Python script.
Answer #1
import time
time.sleep(5) # Delays for 5 seconds. You can also use a float value.
Here is another example where something is run approximately once a minute:
import time
while True:
print("This prints once a minute.")
time.sleep(60) # Delay for 1 minute (60 seconds).
Answer #2
You can use the sleep() function in the time module. It can take a float argument for sub-second resolution.
from time import sleep
sleep(0.1) # Time in seconds
Filter by property __del__: Questions
How to delete a file or folder in Python?
5 answers
How do I delete a file or folder in Python?
Answer #1
os.remove()removes a file.os.rmdir()removes an empty directory.shutil.rmtree()deletes a directory and all its contents.
Path objects from the Python 3.4+ pathlib module also expose these instance methods:
pathlib.Path.unlink()removes a file or symbolic link.pathlib.Path.rmdir()removes an empty directory.
We hope this article has helped you to resolve the problem. Apart from Filter by property, check other __del__-related topics.
Want to excel in Python? See our review of the best Python online courses 2023. If you are interested in Data Science, check also how to learn programming in R.
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Warsaw | 2023-04-02
Thanks for explaining! I was stuck with Filter by property for some hours, finally got it done 🤗. Checked yesterday, it works!
London | 2023-04-02
code Python module is always a bit confusing 😭 Filter by property is not the only problem I encountered. I just hope that will not emerge anymore
Berlin | 2023-04-02
Maybe there are another answers? What Filter by property exactly means?. I just hope that will not emerge anymore
