How to use the pypyr.log function in pypyr

"""Step that unsets env vars."""
import os
import pypyr.log.logger

# logger means the log level will be set correctly
logger = pypyr.log.logger.get_logger(__name__)


def run_step(context):
    """Unset $ENVs.

    Context is a dictionary or dictionary-like. context is mandatory.

    context['envUnset'] must exist. It's a list.
    List items are the names of the $ENV values to unset.

    For example, say input context is:
        key1: value1
        key2: value2
        key3: value3
        envUnset:
            MYVAR1

"""Step that sets env vars from the pypyr context."""
import os
import pypyr.log.logger

# logger means the log level will be set correctly
logger = pypyr.log.logger.get_logger(__name__)


def run_step(context):
    """Set $ENVs from the pypyr context.

    Context is a dictionary or dictionary-like. context is mandatory.

    context['envSet'] must exist. It's a dictionary.
    Values are the keys of the pypyr context values to write to $ENV.
    Keys are the names of the $ENV values to which to write.

    For example, say input context is:
        key1: value1
        key2: value2
        key3: value3
        envSet:

Args:
        pipeline_name: string. Name of pipeline, sans .yaml at end.
        pipeline_context_input: string. Initialize the pypyr context with this
                                string.
        working_dir: path. looks for ./pipelines and modules in this directory.
        log_level: int. Standard python log level enumerated value.
        log_path: os.path. Append log to this path.
        groups: list of str. step-group names to run in pipeline.
        success_group: str. step-group name to run on success completion.
        failure_group: str. step-group name to run on pipeline failure.

    Returns:
        None

    """
    pypyr.log.logger.set_root_logger(log_level, log_path)

    logger.debug("starting pypyr")

    # pipelines specify steps in python modules that load dynamically.
    # make it easy for the operator so that the cwd is automatically included
    # without needing to pip install a package 1st.
    pypyr.moduleloader.set_working_directory(working_dir)

    try:
        load_and_run_pipeline(pipeline_name=pipeline_name,
                              pipeline_context_input=pipeline_context_input,
                              groups=groups,
                              success_group=success_group,
                              failure_group=failure_group)
    except Stop:
        logger.debug("Stop: stopped pypyr")