Re: python syntax
- From: Tyler Littlefield <tyler@xxxxxxxxxxxxx>
- To: programmingblind@xxxxxxxxxxxxx
- Date: Sun, 27 Dec 2009 13:15:47 -0700
Python doesn't distinguish between public and private scope. YOu can just as
easly alter myclass.myvar as you can edit self.var from within a method of
myclass.
On Dec 27, 2009, at 1:07 PM, Alex Hall wrote:
> So are they public then?
>
>
> Have a great day,
> Alex
> New email address: mehgcap@xxxxxxxxx
> ----- Original Message ----- From: "Tyler Littlefield" <tyler@xxxxxxxxxxxxx>
> To: <programmingblind@xxxxxxxxxxxxx>
> Sent: Sunday, December 27, 2009 15:01
> Subject: Re: python syntax
>
>
> that does change the vars in the class, but it doesn't set up anything
> really. it's just manipulating class variables.
> On Dec 27, 2009, at 12:32 PM, Alex Hall wrote:
>
>> Okay about the underlines being syntax, but what do you mean the vars are in
>> conditionals?
>>
>> self._client.session_key = result['session_key']
>> self._client.uid = result['uid']
>> self._client.secret = result.get('secret')
>>
>> What happens with these vars? The statement after these is a return, and the
>> def ends, so I am not sure what these are. Are they public? For example,
>> could I call this method and use
>> getSession._client.session_key
>> and use that as a var? I guess I mean, is this sort of like a constructor in
>> java, setting up some public vars?
>>
>>
>>
>>
>> Have a great day,
>> Alex
>> New email address: mehgcap@xxxxxxxxx
>> ----- Original Message ----- From: "Tyler Littlefield" <tyler@xxxxxxxxxxxxx>
>> To: <programmingblind@xxxxxxxxxxxxx>
>> Sent: Sunday, December 27, 2009 14:24
>> Subject: Re: python syntax
>>
>>
>> the _ is just the variable syntax. the vars that it extracts or uses rather
>> are just in conditionals from what I remember of the code.
>> On Dec 27, 2009, at 12:02 PM, Alex Hall wrote:
>>
>>> I know basic python, having written a program in it for a class about 3
>>> months ago, but this stuff is more advanced than what I learned. Is there
>>> something that covers these:
>>>
>>> 1. Why put an underline after the self keyword?
>>> 2. The method in my email returned one variable, yet it also had several
>>> vars which it extracted from somewhere. It did not return them, though, so
>>> why make them at all?
>>> 3. I have read about super, and I understand that it is a way of basically
>>> grabbing a passing bit of information, modifying it, then sening it on its
>>> way. I cannot understand this in practice, though, in the places where I
>>> have seen it.
>>>
>>>
>>> Have a great day,
>>> Alex
>>> New email address: mehgcap@xxxxxxxxx
>>> ----- Original Message ----- From: "Tyler Littlefield" <tyler@xxxxxxxxxxxxx>
>>> To: <programmingblind@xxxxxxxxxxxxx>
>>> Sent: Sunday, December 27, 2009 13:50
>>> Subject: Re: python syntax
>>>
>>>
>>> Alix,
>>> I'm going to recommend you read the python tutorial. Just jumping in from
>>> knowing another language will not work. The ideas are the same, but the
>>> keywords are different. Go read up on classes, self is fully explained
>>> there. Adding a method is as easy as just appending it in the class, making
>>> sure that it's indented correctly.
>>>
>>> On Dec 27, 2009, at 11:37 AM, Alex Hall wrote:
>>>
>>>> Hi all,
>>>> I am really trying to better understand Python, but I am lost here. I have
>>>> a file called pyfacebook, and it is a python wrapper for the facebook api.
>>>> I am trying to add a ocuple of my own methods to this file, the new stream
>>>> methods. I want all these methods in one class, so I created said class.
>>>> Now, though, I am not sure how to put my methods into my class. The file
>>>> contains something called an IDL, which seems to be a dictionary of
>>>> methods? The other problem I have is getting some necessary information
>>>> for connecting to facebook in the first place. Most of it can be gotten
>>>> through methods already in place, but I am not sure how to call one such
>>>> method because it has a lot of use of the word 'self' and I am unable to
>>>> figure out just what it returns. I have pasted this funciton below. If you
>>>> understand it, could you please explain it!!?? Thanks.
>>>>
>>>> def getSession(self):
>>>> """Facebook API call. See
>>>> http://developers.facebook.com/documentation.php?v=1.0&method=auth.getSession""";
>>>> args = {}
>>>> try:
>>>> args['auth_token'] = self._client.auth_token
>>>> except AttributeError:
>>>> raise RuntimeError('Client does not have auth_token set.')
>>>> result = self._client('%s.getSession' % self._name, args)
>>>> self._client.session_key = result['session_key']
>>>> self._client.uid = result['uid']
>>>> self._client.secret = result.get('secret')
>>>> self._client.session_key_expires = result['expires']
>>>> return result
>>>>
>>>>
>>>> Have a great day,
>>>> Alex
>>>> New email address: mehgcap@xxxxxxxxx
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