python去除bytes字节的多余空格

b = b"\r\r\nsjhsldfj\r\r\n     \r\r\nadfbs\r\r\n     \r\r\nhello\r\r\n"
s=b"\r\r\n"
t=b" "
barr = bytearray(b) #bytes只有转为字节数组才能处理
for i in range(len(barr)):
    if(barr[i]==13 or barr[i]==10): # 13 =‘\r 12='\n' 32=" "
        barr[i]=32
str = barr.decode()  # 转为字符串
list = str.split(" ") # 利用空格为分隔符转为列表
while '' in list:  #去空
    list.remove('')
print(list)
with open("file",'a') as f:
    for line in list:    #列表元素按行存入文件
        f.write(line + '\n')