How to install a specific version of a package with pip?

Michael Zippo

👻 Check our latest review to choose the best laptop for Machine Learning engineers and Deep learning tasks!

Possible Duplicate:
Installing specific package versions with Pip

I am a bit new to pip install and virtualenv in general.

I have setup an virtualenv on my server as well as on my local dev environment.

On the server the package django_modeltranslation-0.4.0_beta2 works perfectly fine.

However on my local machine django_modeltranslation-0.5.0-alpha doesn"t seem to work well at all.

I usually simply install it in virtual-env like this:

$ source bin/active
(env)$ pip install django_modeltranslation

This gets the latest version though, which now for the first time causes issues working with latest version.

So I have uninstalled the version 5 alpha like this:

(env)$ pip uninstall django_modeltranslation

But now I don"t know how I could get the working version 0.4.0 Beta again. I tried this but it couldn"t find it:

(env)$ pip install django_modeltranslation-0.4.0_beta2
Downloading/unpacking django-modeltranslation-0.4.0-beta2
  Could not find any downloads that satisfy the requirement django-modeltranslation-0.4.0-beta2
No distributions at all found for django-modeltranslation-0.4.0-beta2

I think there must be a way, since that is the whole point of using virtual env.

👻 Read also: what is the best laptop for engineering students?

How to install a specific version of a package with pip? del: Questions

__del__

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.

2973

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).

2973

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 install a specific version of a package with pip? del: Questions

__del__

How to delete a file or folder in Python?

5 answers

How do I delete a file or folder in Python?

2639

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 install a specific version of a package with pip?, 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:

Cornwall Sikorski

Vigrinia | 2023-03-24

Simply put and clear. Thank you for sharing. How to install a specific version of a package with pip? and other issues with dis Python module was always my weak point 😁. Will get back tomorrow with feedback

Manuel Galleotti

Singapore | 2023-03-24

dis Python module is always a bit confusing 😭 How to install a specific version of a package with pip? is not the only problem I encountered. I just hope that will not emerge anymore

Ken OConnell

Massachussetts | 2023-03-24

Simply put and clear. Thank you for sharing. How to install a specific version of a package with pip? and other issues with re Python module was always my weak point 😁. Checked yesterday, it works!