Python - OpenStack - pickle dump and load

Development Pipeline & Plugins Editor Scripting
1

Hi all, hope you can help me. The problem is the following.

I create an object in python, consisting of some lists. I save this object to a file using pickle.dump and load it using pickle.load. Everything works fine and i can still use it as the object i created (access the lists etc.)

But it does not work, when i do the following

  1. create object
  2. pickle.dump locally
  3. upload the dumped file into an OpenStack Cloud
  4. download it again to local
  5. pickle.load the downloaded file

After i load it i just get a string and not the object which means, i cannot access the lists for example.

Any idea what to do? I don’t understand why it should make a difference

2

When you upload and download files from cloud storage, the data may be encoded or decoded in transit. To ensure that your pickled object remains intact, you can encode it as bytes before uploading and decode it after downloading. Here’s how:

Python Code-

# Before uploading
import pickle

# Create your object
my_object = ...

# Pickle and encode as bytes
pickled_object = pickle.dumps(my_object)
pickled_bytes = bytes(pickled_object)

# Upload pickled_bytes to OpenStack Cloud

# After downloading
# Download the pickled bytes from OpenStack Cloud

# Decode and unpickle
unpickled_object = pickle.loads(pickled_bytes)

Implement proper error handling to catch any exceptions that occur during pickling, uploading, downloading, or unpickling. This will help you diagnose any specific issues that may arise.

Thanks