为什么 os.path.getsize() 在 python 中抛出错误？

Question

我正在尝试打印所有文件列表的大小，但出现错误。这是代码：

import os

def printSize(fileAbsPath) :
  print os.path.getsize(fileAbsPath)


for folderName, subfolders, filenames in os.walk('/Users/kris/Desktop'):
  for filename in filenames :
    try :
      printSize(os.path.abspath(filename))
    except Exception as err:
      print 'An exception happend : ' + str(err)

而且，错误是：

An exception happend : [Errno 2] No such file or directory: '/Users/kris/Desktop/AutomateBoringStuff/.DS_Store'
An exception happend : [Errno 2] No such file or directory: '/Users/kris/Desktop/AutomateBoringStuff/.gitignore'
An exception happend : [Errno 2] No such file or directory: '/Users/kris/Desktop/AutomateBoringStuff/.gitmodules'
An exception happend : [Errno 2] No such file or directory: '/Users/kris/Desktop/AutomateBoringStuff/.localized'
.
.
.
.
An exception happend : [Errno 2] No such file or directory: '/Users/kris/Desktop/AutomateBoringStuff/BLE Scanner.m4a'
An exception happend : [Errno 2] No such file or directory: '/Users/kris/Desktop/AutomateBoringStuff/Screen Shot 2015-07-23 at 3.30.52 PM.png'

不知道怎么回事。我认为它与 'concealed files' 有点相关，但事实并非如此。

Answer 1

试试这个：

  printSize(os.path.abspath(os.path.join(folderName, filename)))

Answer 2

来自 os.walk 的文档（强调已添加）：

Generate the file names in a directory tree by walking the tree either top-down or bottom-up. For each directory in the tree rooted at directory top (including top itself), it yields a 3-tuple (dirpath, dirnames, filenames). dirpath is a string, the path to the directory. dirnames is a list of the names of the subdirectories in dirpath (excluding '.' and '..'). filenames is a list of the names of the non-directory files in dirpath. Note that the names in the lists contain no path components. To get a full path (which begins with top) to a file or directory in dirpath, do os.path.join(dirpath, name).

我猜你运行你的脚本在 AutomateBoringStuff 中（所以它是工作目录），但文件实际上在 Desktop.

中

/Users/kris/Desktop/AutomateBoringStuff/BLE Scanner.m4a 应该是 /Users/kris/Desktop/BLE Scanner.m4a

Answer 3

根据docs.python os.path.getsize（路径） Return 路径的大小（以字节为单位）。

Raise os.error if the file does not exist or is inaccessible

因此捕获此异常或确保文件存在。

为什么 os.path.getsize() 在 python 中抛出错误？

Why os.path.getsize() throw error in python?

python

os.path