Details

This message is generated when the second argument in Except is a pattern that represents a sequence of expressions.
Patterns based on __, ___, patt..., and p... represent sequences of expressions.
Off[message] switches off the message; On[message] switches it on. For example: Off[Except::lenmod].

Examples

The second argument in Except is a pattern that stands for a sequence of expressions:

Wolfram Language code: Cases[{{5, 9}, {7, 8, 9}, {11, 3, 17}, {7, 9, 11}}, Except[{__ ? PrimeQ}, __ ? OddQ]]

Pick the sublists in which all of the elements are odd but not all of the elements are prime:

Wolfram Language code: Cases[{{15, 1}, {7, 8, 9}, {11, 3, 17}, {7, 9, 11}}, Except[{__ ? PrimeQ}, {__ ? OddQ}]]

Top