[Tutor] file operations and formatting

[Magnus Lycka]

At 11:09 2002-12-17 -0500, Mike P wrote:
>Is there some difference between using open('whatever','w') and
>file('whatever','w')?

See
http://www.python.org/doc/current/lib/built-in-funcs.html

The background is the new style classes, and the union of
types and classes. For more about that, read:

http://www.python.org/doc/current/whatsnew/sect-rellinks.html#SECTION000310000000000000000

The idea is that the builtin types should behave as
classes. You should be able to subclass string or
int or file, to extend them with new features. Then
it makes sence that the name of the class is also used
as a constructor. Right?

If you do

calls Person:
     def __init__(fname, lname):
         self._fname = fname
         self._lname = lname

p = Person('Brian', 'Cohen')

to instanciate a Person object, you should be able to do

f = file('hello.txt', 'w')

to instanciate a file object.


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Magnus Lycka, Thinkware AB
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