binary_coded_decimal.py

defbinary_coded_decimal(number: int) ->str:
"""
 Find binary coded decimal (bcd) of integer base 10.
 Each digit of the number is represented by a 4-bit binary.
 Example:
 >>> binary_coded_decimal(-2)
 '0b0000'
 >>> binary_coded_decimal(-1)
 '0b0000'
 >>> binary_coded_decimal(0)
 '0b0000'
 >>> binary_coded_decimal(3)
 '0b0011'
 >>> binary_coded_decimal(2)
 '0b0010'
 >>> binary_coded_decimal(12)
 '0b00010010'
 >>> binary_coded_decimal(987)
 '0b100110000111'
 """
return"0b"+"".join(
str(bin(int(digit)))[2:].zfill(4) fordigitinstr(max(0, number))
 )


if__name__=="__main__":
importdoctest

doctest.testmod()