They are speaking the same thing and it has to do with tuples (relational algebra) or rows (layman’s term). When it says high-cardinality are possible values of particular attribute (or field) that are unique and therefore the number of rows or tuples are higher: Example: StudentID Lastname Firstname Gender 101 Smith John M 102 Jones … Read more
Suppose you are designing a new class with some methods that you don’t want to implement, yet. class MyClass(object): def meth_a(self): pass def meth_b(self): print “I’m meth_b” If you were to leave out the pass, the code wouldn’t run. You would then get an: IndentationError: expected an indented block To summarize, the pass statement does … Read more
The last assert would have given you a warning (SyntaxWarning: assertion is always true, perhaps remove parentheses?) if you ran it through a full interpreter, not through IDLE. Because assert is a keyword and not a function, you are actually passing in a tuple as the first argument and leaving off the second argument. Recall … Read more