hex_to_bin.py

defhex_to_bin(hex_num: str) ->int:
"""
 Convert a hexadecimal value to its binary equivalent
 #https://stackoverflow.com/questions/1425493/convert-hex-to-binary
 Here, we have used the bitwise right shift operator: >>
 Shifts the bits of the number to the right and fills 0 on voids left as a result.
 Similar effect as of dividing the number with some power of two.
 Example:
 a = 10
 a >> 1 = 5

 >>> hex_to_bin("AC")
 10101100
 >>> hex_to_bin("9A4")
 100110100100
 >>> hex_to_bin(" 12f ")
 100101111
 >>> hex_to_bin("FfFf")
 1111111111111111
 >>> hex_to_bin("-fFfF")
 -1111111111111111
 >>> hex_to_bin("F-f")
 Traceback (most recent call last):
 ...
 ValueError: Invalid value was passed to the function
 >>> hex_to_bin("")
 Traceback (most recent call last):
 ...
 ValueError: No value was passed to the function
 """

hex_num=hex_num.strip()
ifnothex_num:
raiseValueError("No value was passed to the function")

is_negative=hex_num[0] =="-"
ifis_negative:
hex_num=hex_num[1:]

try:
int_num=int(hex_num, 16)
exceptValueError:
raiseValueError("Invalid value was passed to the function")

bin_str=""
whileint_num>0:
bin_str=str(int_num%2) +bin_str
int_num>>=1

returnint(("-"+bin_str) ifis_negativeelsebin_str)


if__name__=="__main__":
importdoctest

doctest.testmod()