python - 如何从文件中读取文件内容？

Question

使用Python3，希望os.walk一个文件目录，将它们读入一个二进制对象(字符串？)，并对其做一些进一步的处理。不过，第一步:如何读取 os.walk 的文件结果？

# NOTE: Execute with python3.2.2

import os
import sys

path = "/home/user/my-files"

count = 0
successcount = 0
errorcount = 0
i = 0

#for directory in dirs
for (root, dirs, files) in os.walk(path):
 # print (path)
 print (dirs)
 #print (files)

 for file in files:

   base, ext = os.path.splitext(file)
   fullpath = os.path.join(root, file)

   # Read the file into binary? --------
   input = open(fullpath, "r")
   content = input.read()
   length = len(content)
   count += 1
   print ("    file: ---->",base," / ",ext," [count:",count,"]",  "[length:",length,"]")
   print ("fullpath: ---->",fullpath)

错误:

Traceback (most recent call last):
  File "myFileReader.py", line 41, in <module>
    content = input.read()
  File "/usr/lib/python3.2/codecs.py", line 300, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xe2 in position 11: invalid continuation byte

Answer 1

要读取二进制文件，您必须以二进制模式打开文件。变化

input = open(fullpath, "r")

到

input = open(fullpath, "rb")

read() 的结果将是一个 bytes() 对象。