ten small Python programs - comp.lang.python

Message from discussion ten small Python programs

Steven Bethard

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More options May 27 2007, 5:38 am

Newsgroups: comp.lang.python

From: Steven Bethard <steven.beth...@gmail.com>

Date: Sat, 26 May 2007 13:38:44 -0600

Local: Sun, May 27 2007 5:38 am

Subject: Re: ten small Python programs

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Steve Howell wrote:
> I've always thought that the best way to introduce new
> programmers to Python is to show them small code
> examples.

> When you go to the tutorial, though, you have to wade
> through quite a bit of English before seeing any
> Python examples.

> Below is my attempt at generating ten fairly simple,
> representative Python programs that expose new users
> to most basic concepts, as well as the overall syntax.

Very cool! Do you mind putting this up on the Wiki somewhere so that we
can link to it more easily? Maybe something like:

http://wiki.python.org/moin/SimplePrograms

<nitpick>
Though the code should probably follow PEP 8 guidelines, e.g.
under_scores instead of camelCase for object and method names:

http://www.python.org/dev/peps/pep-0008/
</nitpick>

> class ShoppingCart:
> def __init__(self): self.items = []
> def buy(self, item): self.items.append(item)
> def boughtItems(self): return self.items
> myCart = ShoppingCart()
> myCart.buy('apple')
> myCart.buy('banana')
> print myCart.boughtItems()

I think boughtItems() is probably not a good example of Python code
since in this case, you should probably just write ``my_cart.items``.
Maybe it should define ``__len__`` instead? Or maybe something like::

def select_items(self, prefix):
return [item for item in self.items if item.startswith(prefix)]

STeVe

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