regular expressions.

[Atul.]

Hey All,

I have been playing around with REs and could not get the following
code to run.

import re
vowel = r'[aeiou]'
re.findall(vowe l, r"vowel")

anything wrong I have done?

Regards,
Atul.

[Peter Otten]

Re: regular expressions.

Atul. wrote:

I have been playing around with REs and could not get the following
code to run.
>
import re
vowel = r'[aeiou]'
re.findall(vowe l, r"vowel")
>
anything wrong I have done?

Yes. You didn't paste the traceback into your message.

>>import re
>>vowel = r'[aeiou]'
>>re.findall(vo wel, r"vowel")

['o', 'e']

It works as expected here.

Peter

[Atul.]

Re: regular expressions.

Yes. You didn't paste the traceback into your message.
>

>import re
>vowel = r'[aeiou]'
>re.findall(vow el, r"vowel")

>
['o', 'e']
>
It works as expected here.
>
Peter

When I key this input in IDLE it works but when I try to run the
module it wont work.

[Peter Otten]

Re: regular expressions.

Atul. wrote:

>

>Yes. You didn't paste the traceback into your message.
>>

>>import re
>>vowel = r'[aeiou]'
>>re.findall(vo wel, r"vowel")

>>
>['o', 'e']
>>
>It works as expected here.
>>
>Peter

>
When I key this input in IDLE it works but when I try to run the
module it wont work.

What's the name of your script? What happens when you run it? Does it print
a traceback? If so, what does it say? Please cut and paste, don't
paraphrase.

Peter

[Atul.]

Re: regular expressions.

On Aug 8, 4:22 pm, Peter Otten <__pete...@web. dewrote:

Atul. wrote:
>

Yes. You didn't paste the traceback into your message.

>

>import re
>vowel = r'[aeiou]'
>re.findall(vow el, r"vowel")

>

['o', 'e']

>

It works as expected here.

>

Peter

>

When I key this input in IDLE it works but when I try to run the
module it wont work.

>
What's the name of your script? What happens when you run it? Does it print
a traceback? If so, what does it say? Please cut and paste, don't
paraphrase.
>
Peter

This is something get when I run it like below. it does not print any
output.

atul@atul-desktop:~/Work/work/programs$ python fourth.py
atul@atul-desktop:~/Work/work/programs$

[Atul.]

Re: regular expressions.

On Aug 8, 4:33 pm, "Atul." <atulskulka...@ gmail.comwrote:

On Aug 8, 4:22 pm, Peter Otten <__pete...@web. dewrote:
>
>
>

Atul. wrote:

>

>Yes. You didn't paste the traceback into your message.

>

>>import re
>>vowel = r'[aeiou]'
>>re.findall(vo wel, r"vowel")

>

>['o', 'e']

>

>It works as expected here.

>

>Peter

>

When I key this input in IDLE it works but when I try to run the
module it wont work.

>

What's the name of your script? What happens when you run it? Does it print
a traceback? If so, what does it say? Please cut and paste, don't
paraphrase.

>

Peter

>
This is something get when I run it like below. it does not print any
output.
>
atul@atul-desktop:~/Work/work/programs$ python fourth.py
atul@atul-desktop:~/Work/work/programs$

ok I get it thats coz, I dont print it. right? when I print it does
she it.

[Diez B. Roggisch]

Re: regular expressions.

Atul. schrieb:

On Aug 8, 4:33 pm, "Atul." <atulskulka...@ gmail.comwrote:

>On Aug 8, 4:22 pm, Peter Otten <__pete...@web. dewrote:
>>
>>
>>

>>Atul. wrote:
>>>>Yes. You didn't paste the traceback into your message.
>>>>>>>import re
>>>>>>>vowel = r'[aeiou]'
>>>>>>>re.finda ll(vowel, r"vowel")
>>>>['o', 'e']
>>>>It works as expected here.
>>>>Peter
>>>When I key this input in IDLE it works but when I try to run the
>>>module it wont work.
>>What's the name of your script? What happens when you run it? Does it print
>>a traceback? If so, what does it say? Please cut and paste, don't
>>paraphrase.
>>Peter

>This is something get when I run it like below. it does not print any
>output.
>>
>atul@atul-desktop:~/Work/work/programs$ python fourth.py
>atul@atul-desktop:~/Work/work/programs$

>
ok I get it thats coz, I dont print it. right? when I print it does
she it.

Yes.

Diez

[Peter Otten]

Re: regular expressions.

Atul. wrote:

On Aug 8, 4:33 pm, "Atul." <atulskulka...@ gmail.comwrote:

>On Aug 8, 4:22 pm, Peter Otten <__pete...@web. dewrote:
>>
>>
>>

Atul. wrote:

>>

>Yes. You didn't paste the traceback into your message.

>>

>>import re
>>vowel = r'[aeiou]'
>>re.findall(vo wel, r"vowel")

>>

>['o', 'e']

>>

>It works as expected here.

>>

>Peter

>>

When I key this input in IDLE it works but when I try to run the
module it wont work.

>>

What's the name of your script? What happens when you run it? Does it
print a traceback? If so, what does it say? Please cut and paste, don't
paraphrase.

>>

Peter

>>
>This is something get when I run it like below. it does not print any
>output.
>>
>atul@atul-desktop:~/Work/work/programs$ python fourth.py
>atul@atul-desktop:~/Work/work/programs$

>
ok I get it thats coz, I dont print it. right? when I print it does
she it.

Heureka!

[Atul.]

Re: regular expressions.

The same file when I use with the following does not work.

import re
vowel =
r'[u"\u093e"u"\u09 3f"u"\u0940"u"\ u0941"u"\u0942" u"\u0943"u"\u09 44"u"\u0945"u"\ u0946"u"\u0947" u"\u0948"u"\u09 49"u"\u094a"u"\ u094b"u"\u094c"]'
print re.findall(vowe l, u"\u092f\u093e\ u0902\u091a\u09 4d\u092f\u093e" ,
re.UNICODE)



atul@atul-desktop:~/Work/work/programs$ python fourth.py
[]
atul@atul-desktop:~/Work/work/programs$


is this the way to use Unicode in REs?

Regards,
Atul.

[Peter Otten]

Re: regular expressions.

Atul. wrote:

The same file when I use with the following does not work.
>
import re
vowel =
r'[u"\u093e"u"\u09 3f"u"\u0940"u"\ u0941"u"\u0942" u"\u0943"u"\u09 44"u"\u0945"u"\ u0946"u"\u0947" u"\u0948"u"\u09 49"u"\u094a"u"\ u094b"u"\u094c"]'
print re.findall(vowe l, u"\u092f\u093e\ u0902\u091a\u09 4d\u092f\u093e" ,
re.UNICODE)
>
>
>
atul@atul-desktop:~/Work/work/programs$ python fourth.py
[]
atul@atul-desktop:~/Work/work/programs$
>
>
is this the way to use Unicode in REs?

No, u"..." is part of the string, not the character. The regex becomes

# untested
vowel = u'[\u093e\u093f\u0 940\u0941\u0942 \u0943\u0944\u0 945\u0946\u0947 \u0948\u0949\u0 94a\u094b\u094c]'

Peter

[Hrvoje Niksic]

Re: regular expressions.

"Atul." <atulskulkarni@ gmail.comwrites :

the following does not work.
>
import re
vowel =
r'[u"\u093e"u"\u09 3f"u"\u0940"u"\ u0941"u"\u0942" u"\u0943"u"\u09 44"u"\u0945"u"\ u0946"u"\u0947" u"\u0948"u"\u09 49"u"\u094a"u"\ u094b"u"\u094c"]'

Unfortunately you cannot embed arbitrary Python string constants
(u"...") in regular expressions. What does work is something like:

>>vowel = u'[\u093e\u093f\u0 940\u0941\u0942 \u0943\u0944\u0 945\u0946\u0947 \u0948\u0949\u0 94a\u094b\u094c]'
>>re.findall(vo wel, u"\u092f\u093e\ u0902\u091a\u09 4d\u092f\u093e" )

[u'\u093e', u'\u093e']