Zowe Python Client SDK

The Zowe Client Python SDK, is a set of Python packages designed to allow programmatic interactions with z/OS REST API interfaces with minimal effort.

Python developers can leverage the Zowe SDK in order to create powerful scripts/applications that can interact with z/OS components.

Installation

When installing the Zowe Client Python SDK, you have two options:

• Install all the Zowe packages
• Install a single sub-package

The choice depends on your intentions. If you choose to install all Zowe SDK packages, this means that you will install everything under the zowe namespace in PyPi.

Alternatively, you can choose to install only a single subpackage for a smaller installation.

To install all Zowe SDK packages using pip:

pip install -U --pre zowe

Or, to install a subpackage using pip:

pip install -U --pre zowe.<subpackage>_for_zowe_sdk

For more information on the available sub-packages click HERE

Requirements

The Zowe core package has dependencies on the packages listed below:

commentjson
deepmerge
jsonschema
pyyaml
requests>=2.22
urllib3

It also has an optional dependency on the Zowe Secrets SDK for storing client secrets which can be installed with the secrets extra:

pip install -U --pre zowe.core-for-zowe-sdk[secrets]

Developer setup

Ensure the following prerequisites are installed and on your PATH:

• Python >= 3.7 and pip
• Cargo >= 1.72 (to build Rust bindings for Secrets SDK)
• Visual Studio Build Tools >= 2015 (Windows only)

Clone the repository using git:

git clone https://github.com/zowe/zowe-client-python-sdk.git

Navigate to the root of the repository and checkout the desired branch. Currently, active development is on the main branch:

cd zowe-client-python-sdk/
git checkout main

We recommend that developers make a virtual environment to install all required dependencies.

Create a virtual environment in the root of the repository folder using the venv module. The command below assumes that python is a version of Python3:

python -m venv venv

(If this isn't the case for your environment, use the appropriate command alias for Python3)

Activate your virtual environment so that Python uses it to manage dependencies. Assuming that you are using Bash shell, reference the command below:

source venv/bin/activate

Otherwise, check the table titled "Command to activate virtual environment" here to find the command that works for your shell.

Install the dependencies listed in requirements.txt using pip:

pip install -r requirements.txt

You can now develop the Python SDK with the installed dependencies. When you are finished with your development session, deactivate your virtual environment:

deactivate

Quickstart

After you install the package in your project, import the class for the required sub-package (i.e Console class for z/OS Console commands). Create a dictionary to handle communication with the plug-in:

    from zowe.zos_console_for_zowe_sdk import Console
    profile = {
        "host": "example.com",
        "port": 443,
        "user": "<user>",
        "password": "<password>"
    }

    my_console = Console(profile)

Alternatively, you can use an existing Zowe CLI profile instead:

    from zowe.zos_core_for_zowe_sdk import ProfileManager
    from zowe.zos_console_for_zowe_sdk import Console

    profile = ProfileManager().load(profile_type="zosmf")
    my_console = Console(profile)

Important: If your z/OSMF profile uses a credentials manager, this approach may not work depending on your operating system. Support for loading secure profiles has only been tested on Windows and Ubuntu so far.

Available options

Currently, the Zowe Python SDK supports the following interfaces:

• Console commands
• z/OSMF Information retrieval
• Submit job from a dataset
• Submit job from local file
• Submit job as plain text JCL
• Retrieve job status
• Retrieve job list from JES spool
• Start/End TSO address space
• Ping TSO address space
• Issue TSO command

Important: Notice that the below examples assume that you have already created an object for the sub-package of your preference just like in the quickstart example.

Console

Usage of the console api:

result = my_console.issue_command("<command>")

The result will be a JSON object containing the result from the console command.

Job

To retrieve the status of a job on JES

result = my_jobs.get_job_status("<jobname>", "<jobid>")

To retrieve list of jobs in JES spool

result = my_jobs.list_jobs(owner="<user>", prefix="<job-prefix>")

Additional parameters available are:

• max_jobs
• user_correlator

To submit a job from a dataset:

result = my_jobs.submit_from_mainframe("<dataset-name>")

To submit a job from a local file:

result = my_jobs.submit_from_local_file("<file-path>")

To submit from plain text:

jcl = '''
//IEFBR14Q JOB (AUTOMATION),CLASS=A,MSGCLASS=0,
//             MSGLEVEL=(1,1),REGION=0M,NOTIFY=&SYSUID
//STEP1    EXEC PGM=IEFBR14
'''

result = my_jobs.submit_from_plaintext(jcl)

TSO

Starting a TSO address space

session_parameters = {
     'proc': 'IZUFPROC',
     'chset': '697',
     'cpage': '1047',
     'rows': '204',
     'cols': '160',
     'rsize': '4096',
     'acct': 'DEFAULT'
}

session_key = my_tso.start_tso_session(**session_parameters)

If you don't provide any session parameter ZoweSDK will attempt to start a session with default parameters.

To end a TSO address space

my_tso.end_tso_session("<session-key>")

In order to issue a TSO command

tso_output  =  my_tso.issue_command("<tso-command>")

z/OSMF

Usage of the z/OSMF api

result = my_zosmf.get_info()

The result will be a JSON object containing z/OSMF information

Acknowledgments

• Make sure to check out the Zowe project!
• For further information on z/OSMF REST API, click HERE