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What is the best way to remove an item from a dictionary by value, i.e. when the item"s key is unknown? Here"s a simple approach:
for key, item in some_dict.items():
if item is item_to_remove:
del some_dict[key]
Are there better ways? Is there anything wrong with mutating (deleting items) from the dictionary while iterating it?
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Remove an item from a dictionary when its key is unknown __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
Remove an item from a dictionary when its key is unknown __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 Remove an item from a dictionary when its key is unknown, 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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Moscow | 2023-03-24
Simply put and clear. Thank you for sharing. Remove an item from a dictionary when its key is unknown and other issues with io Python module was always my weak point 😁. I am just not quite sure it is the best method
San Francisco | 2023-03-24
I was preparing for my coding interview, thanks for clarifying this - Remove an item from a dictionary when its key is unknown in Python is not the simplest one. Will use it in my bachelor thesis
Boston | 2023-03-24
Simply put and clear. Thank you for sharing. Remove an item from a dictionary when its key is unknown and other issues with io Python module was always my weak point 😁. I am just not quite sure it is the best method
