On Fri, 14 Jan 2005, Chad Crabtree wrote:
> I have created a file-like object out of a triple quoted string. I was
> wondering if there is a better way to implement readline than what I
> have below? It just doesn't seem like a very good way to do this.
>
> class _macroString(object):
> def __init__(self,s):
> self.macro=s
> self.list=self.macro.split("\n")
> for n,v in enumerate(self.list):
> self.list[n]=v+'\n'
> def readline(self,n=[-1]):
> n[0]+=1
> return self.list[n[0]]
> def __str__(self):
> return str(self.list)
> def __len__(self):
> return len(self.list)
Using the default parameter 'n' in the readline() method isn't safe: all
class instances will end up using the same 'n'. You may want to put the
current line number as part of an instance's state, since two instances of
a macroString should be able to keep track of their line positions
independently.
But that being said, there's already a module in the Standard Library that
turns strings into file-like objects. Can you use StringIO.StringIO?
Best of wishes to you!
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