Computer scienceProgramming languagesPythonPython librariesRegular expressions

Preconditions and postconditions

Theory

Match assertions and their function

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Which of the following functions corresponds to one of the lookaround assertions?

Match the items from left and right columns
Negative lookahead (?!pattern)
Positive lookbehind (?<=pattern)
Positive lookahead (?=pattern)
Negative lookbehind (?<!pattern)
If the current position in the string is preceded by a particular pattern.
If the current position in the string is followed by a particular pattern.
If the current position in the string is not followed by a particular pattern.
If the current position in the string is not preceded by a particular pattern.
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