codesave-library 0.0.2

Save codebases and load them later -- for reproducibility, sharing, loading artifacts in the future.

Codesave

TL;DR

### When training
from codesave import checkpoint_to_wandb
wandb.init(...)
checkpoint_to_wandb(codebase_dirname)

### Time to recover
from codesave import Codebase, download_from_wandb
zipname = download_from_wandb(wandb_run_path)
with Codebase(zipname):
    from src import model
    model.whatever_you_want

Installation:

pip install codesave_library 

pip install git+https://github.com/dibyaghosh/codesave.git

Basic Usage

The easiest way to use codesave is using checkpoint or checkpoint_to_wandb, which will take all the files in the directory and create a zip file.

For example, suppose we have some repository with the following structure:

codebase/
    src/
        model.py
        utils.py
    train.py
    eval.py

from codesave import checkpoint, checkpoint_to_wandb
checkpoint('codebase/', output_zipname='codebase.zip')
checkpoint_to_wandb('codebase/') # Stores it in the current wandb run (on the cloud)

This creates a zipfile that we can use anywhere else (even if we don't have codesave installed):

import sys
sys.path.append('codebase.zip')
import src.model # This will load the library directly from the zip file

Loading a Codebase

Using sys.path

The easiest way, doesn't require codesave to be installed

import sys
sys.path.append('codebase.zip') # Or PYTHONPATH=codebase.zip:$PYTHONPATH
import src.model # This will load the library directly from the zip file

Using Codebase

The second easiest way, but cannot be run multiple times in the same process (because old modules are not unloaded)

from codesave import Codebase
with Codebase('codebase.zip'):
    from src import model
    model.whatever_you_want

Using UniqueCodebase (general, recommended)

Using UniqueCodebase, we can load as many versions of a codebase as we want, and they can interact with each other.

The import notation is a little less clean, but it's necessary to avoid conflicts.

from codesave import UniqueCodebase
codebase1 = UniqueCodebase('codebase.zip')
codebase2 = UniqueCodebase('codebase_v2.zip')
model_v1 = codebase1.import_module('src.model') # equivalent to (from src import model as model_v1) from codebase.zip
model_v2 = codebase2.import_module('src.model') # equivalent to (from src import model as model_v2) from codebase_v2.zip

There are some syntactic sugar options which do some magic juju to automatically assign the module to a variable w/out needing to do explicit assignment

codebase1.import_('src.model') # equivalent to `import src.model`
codebase1.import_('src.model', as_='model_v1') # equivalent to `import src.model as model_v1`
codebase1.from_import('src', ('model', 'utils')) # equivalent to `from src import model, utils`
codebase1.from_import('src', 'model', as_='model_v1') # equivalent to `from src import model as model_v1`

Just Unzip It

You can always unzip the zip file, and treat it as a normal directory.

Integration w/ wandb

When training,

from codesave import checkpoint_codebase_for_wandb
wandb.init(...)
checkpoint_codebase_for_wandb('codebase/')

Now at any point,

from codesave import load_codebase_from_wandb
load_codebase_from_wandb(wandb_run_name, output_zipname='codesave.zip')
# Now we can add to sys.path or ZipCodebase as before

API

# These provide general routines to save codebase
from .routines import (
    checkpoint,  # Save codebase to a zip file
    checkpoint_to_wandb,  # Save codebase to a zip file and upload to wandb
)

# These allow you to load a codebase from a zip file
from .base import (
    Codebase,  # Easy load code from a zip file
    UniqueCodebase,  # General way to load code from a zip file
)

# These are routines to download codebase from wandb
from .routines import (
    download_from_wandb,  # download something saved with checkpoint_to_wandb
    zip_from_wandb_artifact,  # download something saved with wandb.run.log_code
)

def checkpoint(main_folder, output_zipname=None, extra_libraries=tuple(), extra_pythonpath=tuple(),
                ignore=tuple(), ignore_patterns=tuple(), py_only=False, ignore_larger_than=None, verbose=True,):
    # Saves a codebase to a zip file

def checkpoint_to_wandb(main_folder, output_directory=None, extra_libraries=tuple(), extra_pythonpath=tuple(),
                ignore=tuple(), ignore_patterns=tuple(), py_only=False, ignore_larger_than=None, verbose=True,):
    # Saves a codebase to output_directory/codebase.zip file and uploads it to wandb