How to use the click.pass_context function in click

@click.pass_context
@click.option("--keyname", required=True, help="Keyname on EC2 console")
@click.option("--keypair",
              required=True,
              type=click.Path(exists=True),
              help="Path to the keypair that matches the keyname")
@click.option("--name",
              required=False,
              default="dask-ec2-cluster",
              help="Tag name on EC2")
@click.option("--tags",
              required=False,
              default=None,
              help="Additional EC2 tags.  Comma separated K:V pairs: K1:V1,K2:V2")
@click.option("--region-name",
              default="us-east-1",
              show_default=True,

@click.pass_context
@decorators.deprecated_command("This command is deprecated. Use 'verdi calcjob outputls' instead.")
def calculation_outputls(ctx, calculation, path, color):
    """
    Show the list of files in the directory with relative PATH in the raw input folder of the CALCULATION.

    If PATH is not specified, the base path of the retrieved folder will be used.
    Content can only be showm after the daemon has retrieved the remote files.
    """
    ctx.invoke(verdi_calcjob.get_command(ctx, 'outputls'), calcjob=calculation, path=path, color=color)

@click.pass_context
def project(ctx):
    pass

@click.pass_context
@click.option(
    "--cred-file",
    default='pyborg_mastodon_clientcred.secret',
    type=click.Path(exists=True),
)
def mastodon_login(ctx, cred_file, username, password):
    mastodon = Mastodon(client_id=cred_file, api_base_url=ctx.obj['base_url'])
    mastodon.log_in(username, password, to_file=os.path.join(ctx.obj['secret_folder'], 'pyborg_mastodon_usercred.secret'))

@click.pass_context
def open_marathon(ctx):
    project = ctx.obj['project']
    url = 'http://%s:8080' % project.cluster.head.ip
    webbrowser.open(url, new=2)

@click.pass_context
@click.argument('cluster', required=True)
def info(ctx, cluster):
    context = get_context_from_settings(cluster)
    print_info(cluster, context)

@click.pass_context
@json_skeleton_utils.json_skeleton_generation_handler(input_params_to_complex_types={'freeform-tags': {'module': 'dts', 'class': 'dict(str, string)'}, 'defined-tags': {'module': 'dts', 'class': 'dict(str, dict(str, object))'}}, output_type={'module': 'dts', 'class': 'TransferJob'})
@cli_util.wrap_exceptions
def update_transfer_job(ctx, from_json, force, wait_for_state, max_wait_seconds, wait_interval_seconds, id, lifecycle_state, display_name, device_type, freeform_tags, defined_tags, if_match):

    if isinstance(id, six.string_types) and len(id.strip()) == 0:
        raise click.UsageError('Parameter --id cannot be whitespace or empty string')
    if not force:
        if freeform_tags or defined_tags:
            if not click.confirm("WARNING: Updates to freeform-tags and defined-tags will replace any existing values. Are you sure you want to continue?"):
                ctx.abort()

    kwargs = {}
    if if_match is not None:
        kwargs['if_match'] = if_match

    details = {}

@click.pass_context
@decorators.deprecated_command("This command is deprecated. Use 'verdi process kill' instead.")
def work_kill(ctx, workflows):
    """Kill work workflows."""
    ctx.invoke(verdi_process.process_kill, processes=workflows)

@click.pass_context
@json_skeleton_utils.json_skeleton_generation_handler(input_params_to_complex_types={})
@cli_util.wrap_exceptions
def change_network_security_group_compartment_extended(ctx, **kwargs):
    if 'nsg_id' in kwargs:
        kwargs = swap_nsg_id_value(kwargs)
    ctx.invoke(virtualnetwork_cli.change_network_security_group_compartment, **kwargs)

@click.group()
@click.pass_context
def main(ctx):
    pass