如何将字符串转换为byte []

Question

当我将txt文件转换为字节操作时，我遇到了一些问题。

• 示例little是`test.txt中唯一的单词。
• ascii代码编码的结果为6c6974746c65。

• 我想像data[0x2]|data[0x3]<<8 means 0x74 | (0x74)<<8 =0x7474一样执行字节操作。

  f = open('test.txt','rb')
  output = f.read() 
  f.close()
  file_size = len(output)
  print output,type(output)
  output_ascii = output.encode("hex")
  print output_ascii , type(output_ascii) , len(output_ascii)
  print output_ascii[0],output_ascii[1]`
  

结果

little ('type str')  
6c6974746c65 (type 'str') 12  
6 c

我想得到output_ascii [0] = 0x6c , output_ascii[1] = 0x69 ...etc

我该如何修改？

Answer 1

byte = ''
total_byte = []

with open('test.txt','rb') as f:
    output = f.read() 
    print output, type(output)
    for ele in output:
        byte = ele.encode("hex")
        total_byte.append(byte)
        print byte ,type(byte)

print total_byte[0], total_byte[1]