(bin_str_arr)
return res
Convert binary number in string to string
    :param bin_str_arr: str, whose length must be a multiple of 8
    :return: str
Convert binary number in string to string
    :param bin_str_arr: str, whose length must be a multiple of 8
    :return: str
Convert binary number in string to string : param bin_str_arr : str whose length must be a multiple of 8 : return : str
def bin_to_str(bin_str_arr):
    """
    Convert binary number in string to string
    :param bin_str_arr: str, whose length must be a multiple of 8
    :return: str
    """
    res = ''
    for i in range(0, len(bin_str_arr), 8):
        res += chr(int(bin_str_arr[i:i+8], 2))
    return res
def bin_to_str ( bin_str_arr ) : res = '' for i in range ( 0 , len ( bin_str_arr ) , 8 ) : res += chr ( int ( bin_str_arr [ i : i + 8 ] , 2 ) ) return res