Does \d Always Represent Digits in Python Regex?

Mismatch of d in Regex

Q: In a regex, does d represent any digit?

A: Not necessarily. In Python's regex implementation, d refers to a broader range of characters than solely numerals.

Consider the string "123". When matching with d, only the characters "1" and "3" are identified as digits. This raises the question of what specific criteria d matches in Python regex.

Despite the [0-9] interval often being associated with d, they are not always interchangeable. Python [0-9] exclusively matches the numerals "0123456789." In contrast, d extends beyond these basic numerals to encompass additional digit characters, like those commonly found in Eastern Arabic: ٠١٢٣٤٥٦٧٨٩.

Therefore, d encompasses a more comprehensive set of characters representing digits, catering to a wider range of numerical representations.

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