Work at Dynatrace in Vienna, then you'll know ;)

dots.py

import string


def read_single(chars = 0):
  input_sequence = input(f'> ')
  char = chr(int(input_sequence, base=2))  

  if char in string.printable:
    return char
  else:
    raise Exception(f'Invalid character: binary sequence {input_sequence} is not a printable character')


def decode_once():
  chars = []
  while True:
    try:
      chars.append(read_single())
      print(f'OK. {len(chars)} chars')
    except EOFError:
      break
    except Exception as e:
      print(f'''That din't work, try again (progress so far is saved): {str(e)}''')

  result = ''.join(chars)
  print(f'{len(chars)} characters read, and they mean:\n\t > {result} <')
  


def main():
  print('''
Please enter the punch card string as a series of binary digits (e.g. " ··    ··" will become 01100001).
Once you're done, send EOF (Ctrl+D) to get the result. You can Ctrl+C at any time.
  ''')

  decode_once()
  print('Goodbye.')


if __name__ == '__main__':
  main()