macos – Why does Python’s readline.read_history_file not work from a script, however work interactively?

I requested over on Stack Overflow, however this appears an issue particular to Mac OS X because the error doesn’t occur on different OS (ubuntu for instance).

https://stackoverflow.com/q/42637680/447830 repeated beneath:

So. I personal the file named ~/.osc_history, as proven beneath:

$ w
17:53  up  3:15, 5 customers, 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  employees  13 Mar  6 17:41 /Customers/kyma/.osc_history

$ ls -lO ~/.osc_history 
-rw-r--r--  1 kyma  employees  - 13 Mar  6 17:41 /Customers/kyma/.osc_history

The header within the file is appropriate:

$ cat ~/.osc_history 
_HiStOrY_V2_

From the interactive immediate, the next code runs effective:

$ 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
Sort "assist", "copyright", "credit" or "license" for extra info.
>>> import os.path
>>> import readline
>>> histfile = os.path.be a part of(os.path.expanduser("~"), ".osc_history")
>>> histfile
'/Customers/kyma/.osc_history'
>>> readline.read_history_file(histfile)
>>> ^D

Nonetheless, once I try to run the next, which I’ve known as “yeuch.py”…

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import readline                 # Command line historical past
import os.path

histfile = os.path.be a part of(os.path.expanduser("~"), ".osc_history")
if not os.path.isfile(histfile):     # If there isn't any historical past file...
    empty = open(histfile, "a")      # ... create an ALMOST empty one...
    empty.write("_HiStOrY_V2_n")    # ... with the particular header line
    empty.shut()
readline.read_history_file(histfile) # Learn historical past from earlier periods
readline.set_history_length(1000)    # Default size was -1 (infinite)

…I see:

$ python yeuch.py
Traceback (most up-to-date name final):
  File "yeuch.py", line 14, in 
    readline.read_history_file(histfile) # Learn historical past from earlier periods
IOError: [Errno 1] Operation not permitted

What the heck’s happening? (I hope I am not overlooking some silly typo a number of instances and am not a readline code professional sufficient to identify the error myself.)