Re: [Tutor] Simple Question (I Hope)

[Alan Gauld]

On 16/01/12 01:47, Chris Kavanagh wrote:


Thanks for the help. . .I think I see what you're saying. And to make it
short & simple, the MIMEText Class behaves the way it does, because
that's just how it works (or was designed). So just accept it, & move
on, lol.


Not quite.
What we are saying is that yhour assumption that only dictionaries 
exhibited mapping behaviour was wrong. Any class can be made to look 
like a dictionary by implementing the set/getitem() methods. So the 
lesson to take away is not just to accept these things but to look under 
the covers to see how such anomolies are possible. Python is a 
wonderfully flexible language because of its combination of duck typing 
and operator overloading.


--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/

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Re: [Tutor] something about sum, integer and delta function

[Lie Ryan]

On 01/16/2012 12:57 AM, lina wrote:

Hi,

are there some modules can be used to do below things like:

sum and delta function, and intergeration.


Are you trying to graphically render an equation, calculate the results 
of equation, or algebraically manipulate the equation?


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