On 06/10/2010 04:32 PM, Az wrote:
Let me take a guess:
class Supervisor(object):
def __init__(self, ee_id, name, original_quota, loading_limit):
self.ee_id = ee_id
self.name = name
self.original_quota = original_quota
On 06/10/2010 12:33 PM, Az wrote:
The pprintout was:
{type 'collections.defaultdict': 156,
type 'bool': 2,
type 'float': 1,
type 'int': 538,
type 'list': 1130,
type 'dict': 867,
type 'NoneType': 1,
type 'set': 932,
type 'str': 577,
type 'tuple': 1717,
type 'type': 5,
class
Hi Conor,
Many apologies for being pushy but since I'm pretty much in the
processing of finishing up my code (due in two days), I wonder if you
could just take a look at the last three posts of mine---these
constitute the final hurdle and I'll be done :)
Cheers,
Az
On Jun 9, 9:46 pm, Conor
The pprintout was:
{type 'collections.defaultdict': 156,
type 'bool': 2,
type 'float': 1,
type 'int': 538,
type 'list': 1130,
type 'dict': 867,
type 'NoneType': 1,
type 'set': 932,
type 'str': 577,
type 'tuple': 1717,
type 'type': 5,
class 'sqlalchemy.util.symbol': 1,
class
So I laid them out like this:
class Run(Base):
# For autoincrementing run IDs
# Allows addition of more information to a run
__tablename__ = 'run'
id = Column(Integer, primary_key=True)
timestamp = Column(DateTime, nullable=False)
# comment = Column(UnicodeText(100),
Let me take a guess:
class Supervisor(object):
def __init__(self, ee_id, name, original_quota, loading_limit):
self.ee_id = ee_id
self.name = name
self.original_quota = original_quota
self.loading_limit = loading_limit
On 06/08/2010 10:54 PM, Az wrote:
memo = {}
copied_students = copy.deepcopy(students, memo)
copied_supervisors = copy.deepcopy(supervisors, memo)
copied_projects = copy.deepcopy(projects, memo)
After you do this, memo will contain a record of all copied objects. You
should examine
On 06/09/2010 12:44 AM, Az wrote:
Traceback (most recent call last):
File Main.py, line 39, in module
MCS.monteCarloBasic(trials)
File //MonteCarloSimulation.py, line 163, in monteCarloBasic
session.merge(temp_alloc)
File
Expected: students, supervisors, projects, dictionaries of said objects,
and other attribute values (strings, ints, lists, etc.). Unexpected:
anything else, especially sessions, InstanceState objects, or other ORM
support objects.
Actually got some stuff like the following (copy-pasting bits
On 06/09/2010 02:45 PM, Az wrote:
Expected: students, supervisors, projects, dictionaries of said objects,
and other attribute values (strings, ints, lists, etc.). Unexpected:
anything else, especially sessions, InstanceState objects, or other ORM
support objects.
Actually got some
On 06/07/2010 07:27 PM, Az wrote:
By default, deepcopy will make one copy of everything in the object
graph reachable by the object you feed it. The scary part is that,
unless you also pass in a /memo/ argument to each call to deepcopy, it
will copy the entire graph /every single call/. So if
memo = {}
copied_students = copy.deepcopy(students, memo)
copied_supervisors = copy.deepcopy(supervisors, memo)
copied_projects = copy.deepcopy(projects, memo)
After you do this, memo will contain a record of all copied objects. You
should examine memo.values() to see if it is copying more
Also:
Traceback (most recent call last):
File Main.py, line 39, in module
MCS.monteCarloBasic(trials)
File /Users/Azfar/Dropbox/Final Year Project/SPAllocation/
MonteCarloSimulation.py, line 163, in monteCarloBasic
session.merge(temp_alloc)
File
Traceback (most recent call last):
File Main.py, line 39, in module
MCS.monteCarloBasic(trials)
File //MonteCarloSimulation.py, line 163, in monteCarloBasic
session.merge(temp_alloc)
File /opt/local/Library/Frameworks/Python.framework/Versions/2.6/
On 06/06/2010 02:58 PM, Az wrote:
Hi Conor,
Basically I sat down and made some decisions and changes.
I've created an actual copy of the Student class as in I've now got
two classes, Student and StudentUnmapped. The Unmapped one has the
same attributes as the mapped one, except for being...
Sounds good. Just beware that deepcopy will try to make copies of all
the objects referenced by your StudentUnmapped objects (assuming you
didn't define __deepcopy__), so you may end up copying projects,
supervisors, etc.
Good point. I'm deepcopying my students, projects and supervisors
On 06/07/2010 02:56 PM, Az wrote:
Sounds good. Just beware that deepcopy will try to make copies of all
the objects referenced by your StudentUnmapped objects (assuming you
didn't define __deepcopy__), so you may end up copying projects,
supervisors, etc.
Good point. I'm deepcopying my
By default, deepcopy will make one copy of everything in the object
graph reachable by the object you feed it. The scary part is that,
unless you also pass in a /memo/ argument to each call to deepcopy, it
will copy the entire graph /every single call/. So if you deepcopy the
students
Additionally, before I tried out the create_db_record...
However whenever I try to commit:
#[§§0§]
student_records = best_node
for rec in student_records.itervalues():
MCS.session.add(rec)
MCS.session.commit()
I get:
Hi Conor,
Basically I sat down and made some decisions and changes.
I've created an actual copy of the Student class as in I've now got
two classes, Student and StudentUnmapped. The Unmapped one has the
same attributes as the mapped one, except for being... well, unmapped.
Now I can a) use
Cheers!
Creating a new instance of my mapped class and settings, manually.
Gotcha. I think this will be an easier solution for me.
Nah, I'm not in a web framework.
Additional Q:
+++
Currently, my database is being stored in memory and it's fine like
that since a) my data isn't very expansive
On 06/05/2010 08:06 PM, Az wrote:
Cheers!
Creating a new instance of my mapped class and settings, manually.
Gotcha. I think this will be an easier solution for me.
Nah, I'm not in a web framework.
Additional Q:
+++
Currently, my database is being stored in memory and it's fine like
This will probably help:
def addToTable():
Very simple SQLAlchemy function that populates the Student,
Project
and Supervisor tables.
for student in students.itervalues():
session.add(student)
session.flush()
for project in
Also adding a bit here:
My Student (this one is mapped) class looks like this:
class Student(object):
def __init__(self, ee_id, name, stream_id, overall_proby):
self.ee_id = ee_id
self.name = name
self.stream_id = stream_id
Sorry, meant to reply to you Michael... ended up replying to myself!
---
Firstly, apologies if I'm demanding too much but basically I'm quite a
beginner at Python programming and this is for a University project,
which is why I'm keen to get this done (due in a few days!). So I hope
you won't
On 06/03/2010 02:33 PM, Az wrote:
Firstly, apologies if I'm demanding too much but basically I'm quite a
beginner at Python programming and this is for a University project,
which is why I'm keen to get this done (due in a few days!). So I hope
you won't mind me asking some questions that may
Owning session has been closed? Can I still use deepcopy if the
session has not been closed? How can I stop it from closing the
sessions? The problem is that if I change my shallow copied
dictionary, the objects are changed.
Basically, I'm trying to do this state change thing where I'll take a
On Jun 3, 2010, at 1:58 PM, Az wrote:
Owning session has been closed? Can I still use deepcopy if the
session has not been closed?
deepcopy has issues because SQLAlchemy places extra information on your
objects, i.e. an _sa_instance_state attribute, that you dont want in your copy.
You
I think I get what you mean. In the mean time, another error popped
up:
Traceback (most recent call last):
File Main.py, line 32, in module
MCS.addToTable()
File XXX/MonteCarloSimulation.py, line 138, in addToTable
### --- This function is described in the first post
Also:
I'm using [Python 2.6.5] and [SQLAlchemy 0.5.8]
Previously I was just shallow copying my dictionaries, and there were
no issues then with my simulations.
My dictionaries contain objects such that my students dictionary is
basically:
students[stud_id] = Student(stud_id, name,
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