Splitting device addresses into parts

[Fabian Steiner]

I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

Regards,
Fabian Steiner

[Bruno Desthuilliers]

Fabian Steiner wrote:

I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

devices = ["PCI:2:3.0", "PCI:3.4:0"]
for d in device:
nums = tuple(map(int, d.split(':')[1:]))
print "for ", d, " : ", nums
--
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'o****@xiludom.gro'.split('@')])"

[Fabian Steiner]

Bruno Desthuilliers wrote:

Fabian Steiner wrote:

>I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

devices = ["PCI:2:3.0", "PCI:3.4:0"]
for d in device:
nums = tuple(map(int, d.split(':')[1:]))
print "for ", d, " : ", nums

Unfortunately, this doesn't work (even if I correct your typos) since
the delimeter isn't necessary a colon - that's exactly the difficulty I
am trying to solve.

Regards,
Fabian Steiner

[johnzenger]

This may be a rare case where regular expressions are not a horrible,
self-defeating idea. Something like:

delimiter = re.compile("[:\.]")
delimiter.split("PCI:2:3.0")
....and then ignore the first entry, and map int the rest.
Alternatively, if the delimiters can really be anything, and if there
are no numbers in the first space ("PCI"), then maybe this approach:

number = re.compile("\d+?")
number.findall("PCI:2:3.0")

Fabian Steiner wrote:

Bruno Desthuilliers wrote:

Fabian Steiner wrote:

I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

devices = ["PCI:2:3.0", "PCI:3.4:0"]
for d in device:
nums = tuple(map(int, d.split(':')[1:]))
print "for ", d, " : ", nums

Unfortunately, this doesn't work (even if I correct your typos) since
the delimeter isn't necessary a colon - that's exactly the difficulty I
am trying to solve.

Regards,
Fabian Steiner

[Paddy]

Fabian Steiner wrote:

Bruno Desthuilliers wrote:

Fabian Steiner wrote:

I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

devices = ["PCI:2:3.0", "PCI:3.4:0"]
for d in device:
nums = tuple(map(int, d.split(':')[1:]))
print "for ", d, " : ", nums

Unfortunately, this doesn't work (even if I correct your typos) since
the delimeter isn't necessary a colon - that's exactly the difficulty I
am trying to solve.

Regards,
Fabian Steiner

Fabian,
You should have given better examples, but, on what you have told us so
far...

for ch in delimeter_chars:
s.replace(ch, some_char_not_in_input)
tple = tuple(int(x) for x in s.split(some_char_not_in_input)[1:])

- Pad.

[Steve Holden]

Fabian Steiner wrote:

Bruno Desthuilliers wrote:

>>Fabian Steiner wrote:

>>>I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

devices = ["PCI:2:3.0", "PCI:3.4:0"]
for d in device:
nums = tuple(map(int, d.split(':')[1:]))
print "for ", d, " : ", nums

Unfortunately, this doesn't work (even if I correct your typos) since
the delimeter isn't necessary a colon - that's exactly the difficulty I
am trying to solve.

In which case you'd better redefine """like "PCI:2:3.0" or
"PCI:3.4:0"""" so we can understand the real problem :-)

regards
Steve
--
Steve Holden [phone] [phone]
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://holdenweb.blogspot.com
Recent Ramblings http://del.icio.us/steve.holden

[Bruno Desthuilliers]

Fabian Steiner a écrit :

Bruno Desthuilliers wrote:

>>Fabian Steiner wrote:

>>>I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

devices = ["PCI:2:3.0", "PCI:3.4:0"]
for d in device:
nums = tuple(map(int, d.split(':')[1:]))
print "for ", d, " : ", nums

Unfortunately, this doesn't work (even if I correct your typos) since
the delimeter isn't necessary a colon - that's exactly the difficulty I
am trying to solve.

Hmmm, yes, sorry - didn't took time to test, so I missed this point.

[Fabian Steiner]

jo********@gmail.com wrote:

This may be a rare case where regular expressions are not a horrible,
self-defeating idea. Something like:

delimiter = re.compile("[:\.]")
delimiter.split("PCI:2:3.0")
...and then ignore the first entry, and map int the rest.
Alternatively, if the delimiters can really be anything, and if there
are no numbers in the first space ("PCI"), then maybe this approach:

Thank you, this solution seems to be quite satisfying :-)

Regards,
Fabian Steiner

[Virgil Dupras]

Fabian Steiner wrote:

I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

Regards,
Fabian Steiner

I would personally go for regex, but what about a quick and dirty:

s.replace('.',':').split(':')[1:]

[Lawrence D'Oliveiro]

In message <ef*************@news.t-online.com>, Fabian Steiner wrote:

I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

Good for you for wanting to avoid REs if you can. Bookmark this page
<http://docs.python.org/lib/string-methods.htmland refer to it often.