number = 343703  # Replace ??? with a value of your choice.
sequence_len = 3  # Replace ??? with a value of your choice.
numbstr = str(number)
digitlist = []
 
# Appending all the numbers to a list
for digit in numbstr:
    digitlist.append(int(digit))
 
# Looping over all the variables in digitlist, i is the index
for i, _ in enumerate(digitlist):
    # If the index, i is 2 less than the length of the list
    if i < len(digitlist) - 2:
        # Adding the term and the next two terms after that
        if digitlist[i] + digitlist[i+1] + digitlist[i+2] == 10:
            # Printing the list
            print digitlist[i:i+3]

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