我在Stack Overflow上进行了询问,但这似乎是Mac OS X特有的问题,因为在其他OS(例如ubuntu)上不会发生该错误。
https://stackoverflow.com/q/42637680/447830在下方重复:
所以。我拥有名为〜/ .osc_history的文件,如下所示:
$ w
17:53 up 3:15, 5 users, load averages: 1.30 1.17 1.10
USER TTY FROM LOGIN@ IDLE WHAT
kyma console - 14:39 3:14 -
kyma s001 - 17:20 - w
$ ls -l ~/.osc_history
-rw-r--r-- 1 kyma staff 13 Mar 6 17:41 /Users/kyma/.osc_history
$ ls -lO ~/.osc_history
-rw-r--r-- 1 kyma staff - 13 Mar 6 17:41 /Users/kyma/.osc_history
文件中的标题正确:
$ cat ~/.osc_history
_HiStOrY_V2_
在交互式提示符下,以下代码运行良好:
$ python
Python 2.7.10 (default, Jul 30 2016, 19:40:32)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import os.path
>>> import readline
>>> histfile = os.path.join(os.path.expanduser("~"), ".osc_history")
>>> histfile
'/Users/kyma/.osc_history'
>>> readline.read_history_file(histfile)
>>> ^D
但是,当我尝试运行以下代码时,我将其称为“ yeuch.py” ...
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import readline # Command line history
import os.path
histfile = os.path.join(os.path.expanduser("~"), ".osc_history")
if not os.path.isfile(histfile): # If there's no history file...
empty = open(histfile, "a") # ... create an ALMOST empty one...
empty.write("_HiStOrY_V2_\n") # ... with the special header line
empty.close()
readline.read_history_file(histfile) # Read history from previous sessions
readline.set_history_length(1000) # Default length was -1 (infinite)
...我懂了:
$ python yeuch.py
Traceback (most recent call last):
File "yeuch.py", line 14, in <module>
readline.read_history_file(histfile) # Read history from previous sessions
IOError: [Errno 1] Operation not permitted
到底发生了什么事?(我希望我不要多次忽略一些愚蠢的错别字,并且我也不是一个足以自己发现错误的阅读线代码专家。)
感谢您链接到其他站点。这看起来是一个有趣的问题。我希望从尝试回答和/或正确答案中学习。
—
bmike