forms.py 文件源码

def valid_password(form, field):
    """
    Function to check for validity of a password

    :param form: The form which is being passed in
    :type form: Form
    :param field: The data value for the 'password' inserted by User
    :type field : PasswordField
    """
    if len(field.data) == 0:
        raise ValidationError('new password cannot be empty')
    if len(field.data) < 10 or len(field.data) > 500:
        raise ValidationError('Password needs to be between 10 and 500 '
                              'characters long (you entered %s characters'
                              % len(field.data))