newbie questions about objects properties...

[slowbullet]

Hi everyone,
Still confused between objects and properties..

When I run this:

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from datetime import date from datetime import time from datetime import datetime       today = datetime.now() f = today.time() print f   print datetime.time(datetime.now())

Questions: When I'm running f = today.time() does this mean I'm calling the time method from the object "today" ? Or am I calling the time method from the datetime module and use today variable as "data input" ?

Why datetime.time(datetime.now()) is equivalent ? what is the "datetime.time()" ? a method straight from the datetime module ?

How should I code ? Do I need initialise objects by assigning a variable or can I call them straight like in the print datetime.time example ?


Also on the same lines..

1 2	import os print os.name;

Why above I can't do the below instead ? (this to understand properties...)

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import os a = os.name print a.name

[Axel_Erfurt]

you have already used name in a = os.name

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import os a = os.name print (a)

[Gribouillis]

In a python script, when you see the expression

1

spam.eggs

it means that the object 'spam' has an attribute 'eggs'. The result of the expression is another object, the value of the attribute 'eggs' of the 'spam' object.

Often, this value is a callable object, which means that it can be used in a call expression such as in

1	spam.eggs(4)

It may happen, but this is not necessarily the case, that 'eggs' is a method of the class of the object 'spam'. In that case, the value of spam.eggs is a special callable object named an instancemethod.

Typically, when 'spam' is a module and 'eggs' is a function defined in this module, the expression spam.eggs() is an example of the same syntax, but eggs is not a method of the ModuleType. This illustrates the fact that this expression may have different semantics.