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Regex Email Validation for TikTok
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Regex Email Validation for TikTok

EasyPython

Problem

Valid TikTok emails are of the form user@tiktok.com, and the characteristics of user are: It starts with 1 to 6 lowercase English letters denoted by the character class [a-z]. The lowercase letter(s) are followed by an optional underscore, i.e. zero or one occurrence of the underscore '_' character. The optional underscore is followed by 0 to 4 optional digits denoted by the character class [0-9]. Domain is always tiktok.com. Complete the code in the editor below by replacing the blank () with a regular expression that matches a valid email addresses according to the criteria above.

Asked in the first round technical stage as a HackerRank-style fill-in regex task. Implement is_valid_tiktok_email(email) and return a Boolean. Examples include a@tiktok.com as valid and abcdef_1234@tiktok.com as valid.

Constraints

  • email is a string
  • The domain must be exactly @tiktok.com
  • The username contains 1 to 6 lowercase letters, an optional underscore, and 0 to 4 digits
  • The input length is bounded by the specified username and domain rules

Function Signature

def is_valid_tiktok_email(email):
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