👻 Check our latest review to choose the best laptop for Machine Learning engineers and Deep learning tasks!
I have a model Employees and I would like to have a QuerySet of all rows, but with some specific fields from each row, and not all fields.
I know how to query all rows from the table/model:
Employees.objects.all()
I would like to know how to select fields for each of the Queryset element. How can I do that?
👻 Read also: what is the best laptop for engineering students?
How to obtain a QuerySet of all rows, with specific fields for each one of them? __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
How to obtain a QuerySet of all rows, with specific fields for each one of them? __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 How to obtain a QuerySet of all rows, with specific fields for each one of them?, 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.
By the way, this material is also available in other languages:
- Italiano How to obtain a QuerySet of all rows, with specific fields for each one of them?
- Deutsch How to obtain a QuerySet of all rows, with specific fields for each one of them?
- Français How to obtain a QuerySet of all rows, with specific fields for each one of them?
- Español How to obtain a QuerySet of all rows, with specific fields for each one of them?
- Türk How to obtain a QuerySet of all rows, with specific fields for each one of them?
- Русский How to obtain a QuerySet of all rows, with specific fields for each one of them?
- Português How to obtain a QuerySet of all rows, with specific fields for each one of them?
- Polski How to obtain a QuerySet of all rows, with specific fields for each one of them?
- Nederlandse How to obtain a QuerySet of all rows, with specific fields for each one of them?
- 中文 How to obtain a QuerySet of all rows, with specific fields for each one of them?
- 한국어 How to obtain a QuerySet of all rows, with specific fields for each one of them?
- 日本語 How to obtain a QuerySet of all rows, with specific fields for each one of them?
- हिन्दी How to obtain a QuerySet of all rows, with specific fields for each one of them?
Massachussetts | 2023-03-24
Maybe there are another answers? What How to obtain a QuerySet of all rows, with specific fields for each one of them? exactly means?. I just hope that will not emerge anymore
Warsaw | 2023-03-24
Maybe there are another answers? What How to obtain a QuerySet of all rows, with specific fields for each one of them? exactly means?. Checked yesterday, it works!
Massachussetts | 2023-03-24
Simply put and clear. Thank you for sharing. How to obtain a QuerySet of all rows, with specific fields for each one of them? and other issues with StackOverflow was always my weak point 😁. I am just not quite sure it is the best method
