On 12/21/14 2:28 AM, shawool wrote:
Hi,
where am i going wrong ?
$ python3
Python 3.2.5 (default, Oct 2 2013, 22:58:11)
[GCC 4.8.1] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
d = {}
import sys
d = sys.modules
This does not make a copy of sys.modules. This make d refer to the
actual sys.modules dictionary.
type(d)
<class 'dict'>
dir(d)
['__class__', '__contains__', '__delattr__', '__delitem__', '__doc__',
'__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__',
'__gt__', '__hash__', '__init__', '__iter__', '__le__', '__len__',
'__lt__', '__ne__', '__new__', '__reduce__', '__reduce_ex__',
'__repr__', '__setattr__', '__setitem__', '__sizeof__', '__str__',
'__subclasshook__', 'clear', 'copy', 'fromkeys', 'get', 'items', 'keys',
'pop', 'popitem', 'setdefault', 'update', 'values']
d.clear()
This cleared the contents of d, which is also sys.modules, so you have
clobbered sys.modules. This will make many things stop working in Python.
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
d
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
quit()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
Like all of these things.
--
Ned Batchelder, http://nedbatchelder.com
--
https://mail.python.org/mailman/listinfo/python-list
