Validate Bank Card Number (Luhn)

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Checks the entered data for compliance with the format of the bank card number.

The analysis uses the Luhn algorithm

Stream connectors  

  • [Input] In - starts block execution. 
  • [Output] Out - is activated when the block has finished executing. 

Data connectors 

  • [Input] card_number (string) - the value to check for compliance with the format. [
  • [Output] is_valid (boolean) - if the value matches the format, it returns the value True, otherwise - False.