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5. Manifest constants

Because Python has no constants per se, we use the convention that constants have uppercase names. It is a red flag if any such name appears on the left side of an assignment statement except here.

xnomo3.py
# - - - - -   M a n i f e s t   c o n s t a n t s

5.1. DEFAULT_FILE_NAME

Default name for the input XML file describing the code system.

xnomo3.py
DEFAULT_FILE_NAME = "aou.xml"