On Thu, 25 Jun 2009 18:22:48 +0100, MRAB
<pyt...@mrabarnett.plus.com> wrote:
>Angus Rodgers wrote:
>> On Thu, 25 Jun 2009 10:31:47 -0500, Kirk Strauser
>> <k...@daycos.com> wrote:
>>
>>> At 2009-06-24T19:53:49Z, Angus Rodgers <twir...@bigfoot.com> writes:
>>>
>>>> print ''.join(map(detab, f.xreadlines()))
>>> An equivalent in modern Pythons:
>>>
>>>>>> print ''.join(line.expandtabs(3) for line in file('h071.txt'))
>>
>> I guess the code below would also have worked in 2.1?
>> (It does in 2.5.4.)
>>
>> print ''.join(line.expandtabs(3) for line in \
>> file('h071.txt').xreadlines())
>>
>That uses a generator expression, which was introduced in 2.4.
Sorry, I forgot that list comprehensions need square brackets.
The following code works in 2.1 (I installed version 2.1.3, on
a different machine, to check!):
f = open('h071.txt') # Can't use file('h071.txt') in 2.1
print ''.join([line.expandtabs(3) for line in f.xreadlines()])
(Of course, in practice I'll stick to doing it the more sensible
way that's already been explained to me. I'm ordering a copy of
Wesley Chun, /Core Python Programming/ (2nd ed., 2006), to learn
about version 2.5.)
--
Angus Rodgers
--
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