[Solved] Python 3 Regex 8 numbers only

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Problem with your current regex wiz r'^[0-9]{8,8}':

  1. {8,8} minimum and maximum length you want is 8 so you can make it exact 8 like {8}, no need to have range
  2. Current regex has condition to check beginning of string but you have not defined end of string which can be defined using symbol $ which is allowing comma separated numbers so to avoid that you can simply add $ at the end in your current regex like r'^[0-9]{8}$' and it will fix the issue. However, you can still optimize regex using \d instead of providing range from [0-9] as you’re using all the numbers so regex can be further simplified to "^[0-9]{8}$", also provided sample code below.

code:

import re

in_str = "48848484"

if re.match(pattern="^\d{8}$", string=in_str): print("number is correct")
else: print("wrong phone number")

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solved Python 3 Regex 8 numbers only