I have a string in python as below:
"\\B1\\B1xxA1xxMdl1zzInoAEROzzMofIN"
I want to get the string as
"B1xxA1xxMdl1zzInoAEROzzMofIN"
I think this can be done using regex but could not achieve it yet. Please give me an idea.
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Python 4?? is Python 4 here??Harish Kurup– Harish Kurup2012-01-06 07:55:18 +00:00Commented Jan 6, 2012 at 7:55
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Sorry, I updated the question. I meant python 2.4. Sorry again.gishara– gishara2012-01-06 07:57:02 +00:00Commented Jan 6, 2012 at 7:57
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Do you mean you want to remove all the cars between the two backslashes \?JMax– JMax2012-01-06 08:01:19 +00:00Commented Jan 6, 2012 at 8:01
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Yes. Including the back slashes. Thanks.gishara– gishara2012-01-06 08:02:28 +00:00Commented Jan 6, 2012 at 8:02
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Why are you using Python 2.4? This is now nearly a decade old...Tim Pietzcker– Tim Pietzcker2012-01-06 08:16:50 +00:00Commented Jan 6, 2012 at 8:16
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3 Answers
st = "\B1\B1xxA1xxMdl1zzInoAEROzzMofIN"
s = re.sub(r"\\","",st)
idx = s.rindex("B1")
print s[idx:]
output = 'B1xxA1xxMdl1zzInoAEROzzMofIN'
OR
st = "\B1\B1xxA1xxMdl1zzInoAEROzzMofIN"
idx = st.rindex("\\")
print st[idx+1:]
output = 'B1xxA1xxMdl1zzInoAEROzzMofIN'
4 Comments
Tim Pietzcker
These look a bit too specific for me. What if the source is
"123\\456\\789" - neither solution will give "123789" as a result.
RanRag
his example was specific too, so i came with this specific solution. I thought he was facing problem with this specific string.
gishara
Thanks a lot RanRag. The second solution what I needed.
JMax
Note that this will work if you have only one double backslash. Yet, for this case, using list slicing is simple and efficient.
Here is a try:
import re
s = "\\B1\\B1xxA1xxMdl1zzInoAEROzzMofIN"
s = re.sub(r"\\[^\\]+\\","", s)
print s
Tested on http://py-ide-online.appspot.com (couldn't find a way to share though)
[EDIT] For some explanation, have a look at the Python regex documentation page and the first comment of this SO question:
How to remove symbols from a string with Python?
because using brackets [] can be tricky (IMHO)
In this case, [^\\] means anything but two backslashes \\.
So [^\\]+ means one or more character that matches anything but two backslashes \\.
If the desired section of the string is always on the RHS of a \ char then you could use:
string = "\\B1\\B1xxA1xxMdl1zzInoAEROzzMofIN"
string.rpartition("\\")[2]
output = 'B1xxA1xxMdl1zzInoAEROzzMofIN'
