1. of or pertaining to the science or practice of medicine. 2. curative; medicinal; medical properties. 3. pertaining to or requiring treatment by other than surgical means. 4. pertaining to or indicating the state of one's health: a medical leave.
Numbers refer to positional arguments passed to the .format() method, starting at 0 for the first argument. You may also use any Python name to refer to one of the keyword arguments. If the associated argument is an iterable, you may append an expression of this form to retrieve one of its elements:
Polyform Puzzler is written using the Python programming language, and in Python any non-zero number or non-empty text string (even a text string like '0,0' or even '0') is the equivalent of a True boolean value, equivalent to the number 1. This representation doesn't affect the operation of the exact cover algorithm.