Which regular expression query modifier function indicates the start of a string?
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A. B. C. D.B.
The correct answer to this question is B. "^".
In regular expressions, "^" is a special character called the "caret" or "circumflex," which is used to indicate the beginning of a string. When "^" is used at the beginning of a regular expression pattern, it matches the start of the string that is being searched.
For example, the regular expression pattern "^Hello" would match any string that starts with the word "Hello". In this case, the "^" character is used to indicate that the string must begin with "Hello" in order to be considered a match.
Here's an example of how to use the "^" character in a regular expression:
makefileimport re pattern = "^Hello" string1 = "Hello, world!" string2 = "Goodbye, world!" match1 = re.search(pattern, string1) match2 = re.search(pattern, string2) print(match1) # <re.Match object; span=(0, 5), match='Hello'> print(match2) # None In this example, the "re.search()" function is used to search for the pattern "^Hello" in two different strings. The first string, "Hello, world!", matches the pattern because it starts with "Hello". The second string, "Goodbye, world!", does not match the pattern because it does not start with "Hello".