os.environ
The os.environ function returns a frozen dictionary containing a snapshot of the environment used by the script's child processes.
Usage
os.environ()
Keys and values are strings. The snapshot includes inherited configuration, declared environment overrides,
changes made with os.setenv, and tool directories added to PATH by
dependencies.tools. It preserves explicitly empty values.
If a variable appears more than once, its last value wins. On Windows, names are normalized to uppercase.
Each call creates an independent, read-only snapshot. Later environment changes do not update an earlier snapshot.
Per-call env= overrides apply only to that process and do not affect this snapshot.
The env global continues to contain only explicitly declared step inputs.
Examples
before = os.environ()
os.setenv("REGION", "us-east-1")
after = os.environ()
print(after["REGION"])
Avoid printing the entire environment, which can contain credentials.
