Hello everyone,
can I sort a multidimensional array in Python by multiple sort keys? A
litte code sample would be nice!
Thx,
Rehceb
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> If you want a good answer you have to give me/us more details, and an
> example too.
OK, here is some example data:
reaction is BUT by the
sodium , BUT it is
sea , BUT it is
this manner BUT the dissolved
pattern , BUT it is
rapid , BUT it is
As each line consists of 5 words, I would break up t
Wait, I made a mistake. The correct result would be
reaction is BUT by the
pattern , BUT it is
rapid , BUT it is
sea , BUT it is
sodium , BUT it is
this manner BUT the dissolved
because "by the" comes before and "the dissolved" after "it is". Sorry
for the confusion.
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Thank you all for your helpful solutions!
Regards,
Rehceb
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Hello,
I have this little grep-like program:
++snip++
#!/usr/bin/python
import sys
import re
pattern = sys.argv[1]
inputfile = file(sys.argv[2], 'r')
for line in inputfile:
matches = re.findall(pattern, line)
if matches:
print matches
++snip++
L
> When printing a list, the individual elements are converted with repr(),
> not with str(). For a string object, repr() adds escape codes for all
> bytes that are not printable ASCII characters.
Thanks Martin, you're right, it were the repr() calls that messed up the
output. Iterating the array
In the re documentation, it says that the matching functions return "non-
overlapping" matches only, but I also need overlapping ones. Does anyone
know how this can be done?
Regards,
Rehceb Rotkiv
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Both methods work well, thank you!
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I want to check whether, for example, the element myList[-3] exists. So
far I did it like this:
index = -3
if len(myList) >= abs(index):
print myList[index]
Another idea I had was to (ab-?)use the try...except structure:
index = -3
try:
print myList[index]
except:
print
> In general case it won't work, because lists accept negative indexes:
> http://docs.python.org/lib/typesseq.html, 3rd note.
Yes, I know! I _want_ the "3rd last list element", i.e. list[-3]. But it
may be that the list does not have 3 elements. In this case, list[-3]
will throw an error, cf.:
Please have a look at this little script:
#!/usr/bin/python
import sys
import codecs
fileHandle = codecs.open(sys.argv[1], 'r', 'utf-8')
fileString = fileHandle.read()
print fileString
if I call it from a Bash shell like this
$ ./test.py testfile.utf8.txt
it works just fine, but when I try to p
Thanks for your many helpful tips!
Rehceb Rotkiv
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On Sat, 07 Apr 2007 12:46:49 -0700, Gabriel Genellina wrote:
> You have to encode the Unicode object explicitely: print
> fileString.encode("utf-8")
> (or any other suitable one; I said utf-8 just because you read the input
> file using that)
Thanks! That's a nice little stumbling block for a new
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