Kent -- when pulling out just the numbers, why go to the trouble of splitting by "," first?
Good question. It made sense at the time :-)
Here is another way using re.findall(): >>> import re >>> s='Std Lvl: 850hPa, 1503m, 16.8C, 15.7C, 205 @ 11kts' >>> re.findall(r'[\d\.]+', s) ['850', '1503', '16.8', '15.7', '205', '11']
Kent
import re pat = re.compile(r"[^\d.]*")
t = """SigWind: 857hPa, , 21.0C, 20.1C, 210 @ 9kts SigWind: 850hPa�, , , , 205 @ 11kts Std Lvl: 850hPa, 1503m, 16.8C, 15.7C, 205 @ 11kts"""
result = pat.split(t) print result
yields
['', '857', '21.0', '20.1', '210', '9', '850', '205', '11', '850', '1503', '16.8', '15.7', '205', '11', '']
IDLE pops up with a dialog that says Non-ASCII found, yet no encoding declared. Add a line like
# -*- coding: cp1252 -*-
to your file
Choose OK to save this file as cp1252
Edit your general options to silence this warning
It has buttons: Ok, Edit my file Edit my file adds the commented line above to the top of the script.
Could this possibly be causing his problem?
HTH, Jacob
I don't know why this isn't working for you but this worked for me at a DOS console:
>>> s='850hPa�'
>>> s
'850hPa\xf1'
>>> import re
>>> re.sub('\xf1', '*', s)
'850hPa*'
>>> import sys
>>> sys.stdout.encoding
'cp437'
and also in IDLE with a different encoding: >>> s='850hPa�' >>> s '850hPa\xb1' >>> import re >>> re.sub('\xb1', '*', s) '850hPa*' >>> import sys >>> sys.stdout.encoding 'cp1252'
So one guess is that the data is in a different encoding than what you expect? When you print the string and get '\xb1', is that in the same program that is doing the regex?
Another approach would be to just pull out the numbers and ignore everything else:
>>> s='Std Lvl: 850hPa, 1503m, 16.8C, 15.7C, 205 @ 11kts'
>>> l=s.split(',')
>>> l
['Std Lvl: 850hPa', ' 1503m', ' 16.8C', ' 15.7C', ' 205 @ 11kts']
>>> [ re.search(r'[\d\.]+', i).group() for i in l]
['850', '1503', '16.8', '15.7', '205']
Kent
Ertl, John wrote:
All
I have a string that has a bunch of numbers with the units attached to them.
I want to strip off the units. I am using a regular expression and sub to
do this. This works great for almost all of the cases. These are the type of lines:
SigWind: 857hPa, , 21.0C, 20.1C, 210 @ 9kts SigWind: 850hPa�, , , , 205 @ 11kts Std Lvl: 850hPa, 1503m, 16.8C, 15.7C, 205 @ 11kts
I am using the following cleanstring = re.compile( '(hPa|hPa\xb1|m|C|kts)'
). And then the cleanstring.sub("",line). I have tried using numerous \ to
escape the \xb1.
I also tried replacing all non numeric characters that are part of a
number-character string but I could not make that work. The idea was replace
all non-number characters in a "word" that is made up of numbers followed by
numbers.
I then split the line at the commas so in the current thinking I need the
commas for the split. How do I deal with the hPa�? When I print it out it
looks like it is a hexadecimal escape character (\xb1) but I am note sure
how to deal with this.
Any ideas?
Thanks _______________________________________________ Tutor maillist - [email protected] http://mail.python.org/mailman/listinfo/tutor
_______________________________________________ Tutor maillist - [email protected] http://mail.python.org/mailman/listinfo/tutor
_______________________________________________ Tutor maillist - [email protected] http://mail.python.org/mailman/listinfo/tutor
