Answers for "strong password regex pattern"

RegExp validation for password explained

r'^
  (?=.*[A-Z])       // should contain at least one upper case
  (?=.*[a-z])       // should contain at least one lower case
  (?=.*?[0-9])      // should contain at least one digit
  (?=.*?[!@#\$&*~]) // should contain at least one Special character
  .{8,}             // Must be at least 8 characters in length  
$

password regex

"^(?=.*[A-Za-z])(?=.*\d)(?=.*[@$!%*#?&])[A-Za-z\d@$!%*#?&]{8,}$"

password regex

^(?:(?:(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z]))|(?:(?=.*[a-z])(?=.*[A-Z])(?=.*[*.!@$%^&(){}[]:;<>,.?/~_+-=|\]))|(?:(?=.*[0-9])(?=.*[A-Z])(?=.*[*.!@$%^&(){}[]:;<>,.?/~_+-=|\]))|(?:(?=.*[0-9])(?=.*[a-z])(?=.*[*.!@$%^&(){}[]:;<>,.?/~_+-=|\]))).{8,32}$