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[DavidAdamsDesign]

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CodeWars Python Solutions

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Simple validation of a username with regex

Write a simple regex to validate a username. Allowed characters are:

• lowercase letters,
• numbers,
• underscore

Length should be between 4 and 16 characters (both included).

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Given Code

def validate_usr(username):
    #your code here

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Solution

def validate_usr(username):
  return re.match('^[a-z0-9_]{4,16}$', username) != None

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[DavidAdamsDesign]

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