For this expression: ^1[tpndovg][0-9]+ And this string: 1p I'd like to be able to say 'the string matches the first part of the expression, but does not match the entire expression'. Specifically, this deals with validation during typing into a Qt field, using a slot / callback connected to the QLineEdit.textChanged signal. Basically, this callback is run once per keystroke in the field. Example 1: First keystroke: 1 Is it a partial match? yes Next keystroke: p Is it a partial match? yes Example 2: First keystroke: 1 Is it a partial match? yes Next keystroke: 2 Is it a partial match? NO What are the options for accomplishing this? Is there a function in the re module or in the regex module that will do it? Or, would it require parsing the expression to make separate versions of the expression for one-character-typed, for two-characters-typed, for three-characters-typed, and so on? Continue reading...
