String splitting by spaces question

[Massi]

Hi everyone,

I have to parse a string and splitting it by spaces. The problem is
that the string can include substrings comprises by quotations which
must mantain the spaces. What I need is to pass from a string like:

This is an 'example string'

to the following vector:

["This", "is", "an", "example string"]

Which is the best way to achieve this?
Thanks in advance!

 

[Alemu Tadesse]

Hi Everyone,

Can we use rsplit function on an array or vector of strings ? it works
for one not for vector

Alemu


-----Original Message-----
From: [email protected]
[mailto[email protected]] On Behalf
Of Massi
Sent: Wednesday, November 23, 2011 10:10 AM
To: (e-mail address removed)
Subject: String splitting by spaces question

Hi everyone,

I have to parse a string and splitting it by spaces. The problem is
that the string can include substrings comprises by quotations which
must mantain the spaces. What I need is to pass from a string like:

This is an 'example string'

to the following vector:

["This", "is", "an", "example string"]

Which is the best way to achieve this?
Thanks in advance!

 

[Arnaud Delobelle]

Hi everyone,

I have to parse a string and splitting it by spaces. The problem is
that the string can include substrings comprises by quotations which
must mantain the spaces. What I need is to pass from a string like:

This is an 'example string'

to the following vector:

You mean "list"

["This", "is", "an", "example string"]

Here's a way:

s = "This is an 'example string' with 'quotes again'"
[x for i, p in enumerate(s.split("'")) for x in ([p] if i%2 else p.split())]

['This', 'is', 'an', 'example string', 'with', 'quotes again']

 

[Nick Dokos]

Can we use rsplit function on an array or vector of strings ? it works
for one not for vector

...

I have to parse a string and splitting it by spaces. The problem is
that the string can include substrings comprises by quotations which
must mantain the spaces. What I need is to pass from a string like:

This is an 'example string'

to the following vector:

["This", "is", "an", "example string"]

Which is the best way to achieve this?
Thanks in advance!

You can use a list comprehension:

l2 = [x.rsplit(...) for x in l]

But for the original question, maybe the csv module would be
more useful: you can change delimiters and quotechars to match
your input:

import csv
reader = csv.reader(open("foo.txt", "rb"), delimiter=' ', quotechar="'")
for row in reader:
print row

Nick

 

[Miki Tebeka]

http://docs.python.org/library/shlex.html

 

[Phil Rist]

Hi everyone,

I have to parse a string and splitting it by spaces. The problem is
that the string can include substrings comprises by quotations which
must mantain the spaces. What I need is to pass from a string like:

This is an 'example string'

to the following vector:

["This", "is", "an", "example string"]

Which is the best way to achieve this?
Thanks in advance!

Is this what you want?

import shlex


lText = "This is a 'short string' for you to read."
lWords = shlex.split(lText)
print lWords

produces,

['This', 'is', 'a', 'short string', 'for', 'you', 'to', 'read.']

Shlex can be found under 'Program Frameworks' under 'The Python Standard
Library' of ActivePython 2.7 documentation.

C:\Source\Python\New>

 

[DevPlayer]

This is an 'example string'

Don't for get to watch for things like:

Don't, Can't, Won't, I'll, He'll, Hor'davors, Mc'Kinly