On 2016-11-15 01:36, jf...@ms4.hinet.net wrote:
Ned Batchelder at 2016/11/15 6:33:54AM wrote:
> But I get a wrong answer this way:
> >>> from deen import *
> >>> tblm = tbli
> >>> gpa(0x7d)
> 125 # it's 0x7d, the tblm[2] is 0
>
> Why? why! why:-(
Here you are assigning a value to your own tblm, not deen.tblm,
so gpa does not see the new value.
Hi Ned, below is the capture of my terminal screen:
D:\Temp>python
Python 3.4.4 (v3.4.4:737efcadf5a6, Dec 20 2015, 19:28:18) [MSC v.1600 32 bit (In
tel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
dir()
['__builtins__', '__doc__', '__loader__', '__name__', '__package__', '__spec__']
from deen import *
dir()
['__builtins__', '__doc__', '__loader__', '__name__', '__package__', '__spec__',
'gpa', 'tbli', 'tblm']
tblm
[0, 0, 0]
tblm=tbli
tblm
[102, 39, 208]
dir()
['__builtins__', '__doc__', '__loader__', '__name__', '__package__', '__spec__',
'gpa', 'tbli', 'tblm']
Do you mean the last 'tblm' is my own? How it can be? The 'tblm' already exist
before the assignment and this assignment shouldn't create a new one, right?
and how do I assign the 'deen.tblm' under this circumstance?
--Jach
In the module 'deen' there's the name 'tblm' and the name 'tbli', among
others:
[module deen]
tblm -----------> [0, 0, 0]
tbli -----------> [102, 39, 208]
When you say "from deen import *" you're copying names and their
references from the module's namespace to your local namespace:
[module deen] [locally]
tblm ------------> [0, 0, 0] <----------------- tblm
tbli ------------> [102, 39, 208] <------------ tbli
When you say "tblm = ..." you're binding the local name to a different
object, so when you say "tblm = tbli" you get:
[module deen] [locally]
tblm ------------> [0, 0, 0] :-------------- tblm
V
tbli ------------> [102, 39, 208] <------------ tbli
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