Python SDK Documentation Page

Installation

Install Modzy's Python SDK with PIP

  pip install modzy-sdk

Usage/Examples

Initializing the SDK

Initialize your client by authenticating with an API key. You can download an API Key from your instance of Modzy.

from modzy import ApiClient

# Sets BASE_URL and API_KEY values
# Best to set these as environment variables
BASE_URL = "Valid Modzy URL" # e.g., "https://trial.modzy.com"
API_KEY = "Valid Modzy API Key" # e.g., "JbFkWZMx4Ea3epIrxSgA.a2fR36fZi3sdFPoztAXT"

client = ApiClient(base_url=BASE_URL, api_key=API_KEY)

Running Inferences

Raw Text Inputs

Submit an inference job to a text-based model by providing the model ID, version, and raw input text:

# Creates a dictionary for text input(s)
sources = {}

# Adds any number of inputs
sources["first-phone-call"] = {
    "input.txt": "Mr Watson, come here. I want to see you.",
}

# Submit the text to v1.0.1 of a Sentiment Analysis model, and to make the job explainable, change explain=True
job = client.jobs.submit_text("ed542963de", "1.0.1", sources, explain=False)

File Inputs

Pass a file from your local directory to a model by providing the model ID, version, and the filepath of your sample data:

# Generate a mapping of your local file (nyc-skyline.jpg) to the input filename the model expects
sources = {"nyc-skyline": {"image": "./images/nyc-skyline.jpg"}}

# Submit the image to v1.0.1 of an Image-based Geolocation model
job = client.jobs.submit_file("aevbu1h3yw", "1.0.1", sources)

Embedded Inputs

Convert images and other large inputs to base64 embedded data and submit to a model by providing a model ID, version number, and dictionary with one or more base64 encoded inputs:

from modzy._util import file_to_bytes

# Embed input as a string in base64
image_bytes = file_to_bytes('./images/tower-bridge.jpg')
# Prepare the source dictionary
sources = {"tower-bridge": {"image": image_bytes}}

# Submit the image to v1.0.1 of an Imaged-based Geolocation model
job = client.jobs.submit_embedded("aevbu1h3yw", "1.0.1", sources)

Inputs from Databases

Submit data from a SQL database to a model by providing a model ID, version, a SQL query, and database connection credentials:

# Add database connection and query information
db_url = "jdbc:postgresql://db.bit.io:5432/bitdotio"
db_username = DB_USER_NAME
db_password = DB_PASSWORD
db_driver = "org.postgresql.Driver"
# Select as "input.txt" becase that is the required input name for this model
db_query = "SELECT \"mailaddr\" as \"input.txt\" FROM \"user/demo_repo\".\"atl_parcel_attr\" LIMIT 10;"

# Submit the database query to v0.0.12 of a Named Entity Recognition model
job = client.jobs.submit_jdbc("a92fc413b5","0.0.12",db_url, db_username, db_password, db_driver, db_query)

Inputs from Cloud Storage

Submit data directly from your cloud storage bucket (Amazon S3, Azure Blob, NetApp StorageGrid supported) by providing a model ID, version, and storage-blob-specific parameters.

AWS S3

# Define sources dictionary with bucket and key that points to the correct file in your s3 bucket
sources = {
  "first-amazon-review": {
    "input.txt": {
      "bucket": "s3-bucket-name",
      "key": "key-to-file.txt"
    }
  }
}

AWS_ACCESS_KEY = "aws-acces-key"
AWC_SECRET_ACCESS_KEY = "aws-secret-access-key"
AWS_REGION = "us-east-1"

# Submit s3 input to v1.0.1 of a Sentiment Analysis model
job = client.jobs.submit_aws_s3("ed542963de", "1.0.1", sources, AWS_ACCESS_KEY, AWS_SECRET_ACCESS_KEY, AWS_REGION)

Azure Blob Storage

# Define sources dictionary with container name and filepath that points to the correct file in your Azure Blob container
sources = {
  "first-amazon-review": {
    "input.txt": {
      "container": "azure-blob-container-name",
      "filePath": "key-to-file.txt"
    }
  }
}

AZURE_STORAGE_ACCOUNT = "Azure-Storage-Account"
AZURE_STORAGE_ACCOUNT_KEY = "cvx....ytw=="

# Submit Azure Blob input to v1.0.1 of a Sentiment Analysis model
job = client.jobs.submit_azureblob("ed542963de", "1.0.1", sources, AZURE_STORAGE_ACCOUNT, AZURE_STORAGE_ACCOUNT_KEY)

NetApp StorageGRID

# Define sources dictionary with bucket name and key that points to the correct file in your NetApp StorageGRID bucket
sources = {
  "first-amazon-review": {
    "input.txt": {
      "bucket": "bucket-name",
      "key": "key-to-file.txt"
    }
  }
}

ACCESS_KEY = "access-key"
SECRET_ACCESS_KEY = "secret-access-key"
STORAGE_GRID_ENDPOINT = "https://endpoint.storage-grid.example"

# Submit StorageGRID input to v1.0.1 of a Sentiment Analysis model
job = client.jobs.submit_storagegrid("ed542963de", "1.0.1", sources, ACCESS_KEY, SECRET_ACCESS_KEY, STORAGE_GRID_ENDPOINT)

Getting Results

Modzy's APIs are asynchronous by nature, which means you can use the results API to query available results for all completed inference jobs at any point in time. There are two ways you might leverage this Python SDK to query results:

Block Job until it completes

This method provides a mechanism to mimic a sycnchronous API by using two different APIs subsequently and a utility function.

# Define sources dictionary with input data
sources = {"my-input": {"input.txt": "Today is a beautiful day!"}}
# Submit the text to v1.0.1 of a Sentiment Analysis model, and to make the job explainable, change explain=True
job = client.jobs.submit_text("ed542963de", "1.0.1", sources, explain=False)
# Use block until complete method to periodically ping the results API until job completes
results = client.results.block_until_complete(job, timeout=None, poll_interval=5)

Query a Job's Result

This method simply queries the results for a job at any point in time and returns the status of the job, which includes the results if the job has completed.

#  Query results for a job at any point in time
results = client.results.get(job)
#  Print the inference results
results_json = result.get_first_outputs()['results.json']
print(results_json)

Deploying Models

Deploy a model to a your private model library in Modzy

from modzy import ApiClient

# Sets BASE_URL and API_KEY values
# Best to set these as environment variables
BASE_URL = "Valid Modzy URL" # e.g., "https://trial.modzy.com"
API_KEY = "Valid Modzy API Key" # e.g., "JbFkWZMx4Ea3epIrxSgA.a2fR36fZi3sdFPoztAXT"

client = ApiClient(base_url=BASE_URL, api_key=API_KEY)

model_data = client.models.deploy(
    container_image="modzy/grpc-echo-model:1.0.0",
    model_name="Echo Model",
    model_version="0.0.1",
    sample_input_file="./test.txt",
    run_timeout="60",
    status_timeout="60",
    short_description="This model returns the same text passed through as input, similar to an 'echo.'",
    long_description="This model returns the same text passed through as input, similar to an 'echo.'",
    technical_details="This section can include any technical information abot your model. Include information about how your model was trained, any underlying architecture details, or other pertinant information an end-user would benefit from learning.",
    performance_summary="This is the performance summary."
)

print(model_data)

To use client.models.deploy() there are 4 fields that are required:

• container_image (str): This parameter must represent a container image repository & tag name, or in other words, the string you would include after a docker pull command. For example, if you were to download this container image using docker pull modzy/grpc-echo-model:1.0.0, include just modzy/grpc-echo-model:1.0.0 for this parameter
• model_name: The name of the model you would like to deploy
• model_version: The version of the model you would like to deploy
• sample_input_file: Filepath to a sample piece of data that your model is expected to process and perform inference against.

Running Inferences at the Edge

The SDK provides support for running inferences on edge devices through Modzy's Edge Client. The inference workflow is almost identical to the previously outlined workflow, and provides functionality for interacting with both Job and Inferences APIs:

Initialize Edge Client

from modzy import EdgeClient

# Initialize edge client
# Use 'localhost' for local inferences, otherwise use the device's full IP address
client = EdgeClient('localhost',55000)

Submit Inference with Job API

Modzy Edge supports text, embedded, and aws-s3 input types.

# Submit text job to Sentiment Analysis model deployed on edge device by providing a model ID, version, and raw text data, wait for completion
job = client.jobs.submit_text("ed542963de","1.0.27",{"input.txt": "this is awesome"})
# Block until results are ready
final_job_details = client.jobs.block_until_complete(job)
results = client.jobs.get_results(job)

Query Details about Inference with Job API

# get job details for a particular job
job_details = client.jobs.get_job_details(job)

# get job details for all jobs run on your Modzy Edge instance
all_job_details = client.jobs.get_all_job_details()

Submit Inference with Inference API

The SDK provides several methods for interacting with Modzy's Inference API:

• Synchronous: This convenience method wraps two SDK methods and is optimal for use cases that require real-time or sequential results (i.e., a prediction results are needed to inform action before submitting a new inference)
• Asynchronous: This method combines two SDK methods and is optimal for submitting large batches of data and querying results at a later time (i.e., real-time inference is not required)
• Streaming: This method is a convenience method for running multiple synchronous inferences consecutively and allows users to submit iterable objects to be processed sequentially in real-time

Synchronous (image-based model example)

from modzy import EdgeClient
from modzy.edge import InputSource

image_bytes = open("image_path.jpg", "rb").read()
input_object = InputSource(
    key="image", # input filename defined by model author
    data=image_bytes,
) 

with EdgeClient('localhost', 55000) as client:
  inference = client.inferences.run("<model-id>", "<model-version>", input_object, explain=False, tags=None)
results = inference.result.outputs

Asynchronous (image-based model example - submit batch of images in folder)

import os
from modzy import EdgeClient
from modzy.edge import InputSource

# submit inferences
img_folder = "./images"
inferences = []
for img in os.listdir(img_folder):
  input_object = InputSource(
    key="image", # input filename defined by model author
    data=open(os.path.join(img_folder, img), 'rb').read()
  )
  with EdgeClient('localhost', 55000) as client:
    inference = client.inferences.perform_inference("<model-id>", "<model-version>", input_object, explain=False, tags=None)
  inferences.append(inference)

# query results 
with EdgeClient('localhost', 55000) as client:
  results = [client.inferences.block_until_complete(inference.identifier) for inferences in inferences]

Stream

import os
from modzy import EdgeClient
from modzy.edge import InputSource

# generate requests iterator to pass to stream method
requests = []
for img in os.listdir(img_folder):
  input_object = InputSource(
    key="image", # input filename defined by model author
    data=open(os.path.join(img_folder, img), 'rb').read()
  )
  with EdgeClient('localhost', 55000) as client:
    requests.append(client.inferences.build_inference_request("<model-id>", "<model-version>", input_object, explain=False, tags=None)) 

# submit list of inference requests to streaming API
with EdgeClient('localhost', 55000) as client:
  streaming_results = client.inferences.stream(requests)

SDK Code Examples

View examples of practical workflows:

• Image-Based Geolocation Inference Notebook
• Automobile Classification Inference Notebook with Explainability
• Batch Inference with Sentiment Analysis

Documentation

Modzy's SDK is built on top of the Modzy HTTP/REST API. For a full list of features and supported routes visit Python SDK on docs.modzy.com

API Reference

Feature	Code	Api route
Deploy new model	client.models.deploy()	api/models
Get all models	client.models.get_all()	api/models
List models	client.models.get_models()	api/models
Get model details	client.models.get()	api/models/:model-id
List models by name	client.models.get_by_name()	api/models
List models by tag	client.tags.get_tags_and_models()	api/models/tags/:tag-id
Get related models	client.models.get_related()	api/models/:model-id/related-models
List a model's versions	client.models.get_versions()	api/models/:model-id/versions
Get a version's details	client.models.get_version()	api/models/:model-id/versions/:version-id
Update processing engines	client.models.update_processing_engines()	api/resource/models
Get minimum engines	client.models.get_minimum_engines()	api/models/processing-engines
List tags	client.tags.get_all()	api/models/tags
Submit a Job (Text)	client.jobs.submit_text()	api/jobs
Submit a Job (Embedded)	client.jobs.submit_embedded()	api/jobs
Submit a Job (File)	client.jobs.submit_file()	api/jobs
Submit a Job (AWS S3)	client.jobs.submit_aws_s3()	api/jobs
Submit a Job (Azure Blob Storage)	client.jobs.submit_azureblob()	api/jobs
Submit a Job (NetApp StorageGRID)	client.jobs.submit_storagegrid()	api/jobs
Submit a Job (JDBC)	client.jobs.submit_jdbc()	api/jobs
Cancel job	job.cancel()	api/jobs/:job-id
Hold until inference is complete	job.block_until_complete()	api/jobs/:job-id
Get job details	client.jobs.get()	api/jobs/:job-id
Get results	job.get_result()	api/results/:job-id
Get the job history	client.jobs.get_history()	api/jobs/history
Submit a Job with Edge Client (Embedded)	EdgeClient.jobs.submit_embedded()	Python/edge/jobs
Submit a Job with Edge Client (Text)	EdgeClient.jobs.submit_text()	Python/edge/jobs
Submit a Job with Edge Client (AWS S3)	EdgeClient.jobs.submit_aws_s3()	Python/edge/jobs
Get job details with Edge Client	EdgeClient.jobs.get_job_details()	Python/edge/jobs
Get all job details with Edge Client	EdgeClient.jobs.get_all_job_details()	Python/edge/jobs
Hold until job is complete with Edge Client	EdgeClient.jobs.block_until_complete()	Python/edge/jobs
Get results with Edge Client	EdgeClient.jobs.get_results()	Python/edge/jobs
Build inference request with Edge Client	EdgeClient.inferences.build_inference_request()	Python/edge/inferences
Perform inference with Edge Client	EdgeClient.inferences.perform_inference()	Python/edge/inferences
Get inference details with Edge Client	EdgeClient.inferences.get_inference_details()	Python/edge/inferences
Run synchronous inferences with Edge Client	EdgeClient.inferences.run()	Python/edge/inferences
Hold until inference completes with Edge Client	EdgeClient.inferences.block_until_complete()	Python/edge/inferences
Stream inferences with Edge Client	EdgeClient.inferences.stream()	Python/edge/inferences

Support

For support, email opensource@modzy.com or join our Slack.

Contributing

Contributions are always welcome!

See contributing.md for ways to get started.

Please adhere to this project's code of conduct.

We are happy to receive contributions from all of our users. Check out our contributing file to learn more.