Returning a string

[Kless]

How is possible that I can print a variable, but when I use *return
var* it returns an empty string

http://paste.pocoo.org/show/97588/

 

[Diez B. Roggisch]

How is possible that I can print a variable, but when I use *return
var* it returns an empty string

http://paste.pocoo.org/show/97588/

I don't see anything that indicates that the returned object is the
empty string. Simply because there is no code testing for that. And of
course you don't show any debugging output, which doesn't help either.

Diez

 

[Kless]

I don't see anything that indicates that the returned object is the
empty string. Simply because there is no code testing for that. And of
course you don't show any debugging output, which doesn't help either.

Diez

Afghanistan
AF
Out[19]: u'AF'
AFG
Out[19]: u'AFG'
004
Out[19]: u'004'

 

[Simon Forman]

Kless schrieb:

I don't see anything that indicates that the returned object is the
empty string. Simply because there is no code testing for that. And of
course you don't show any debugging output, which doesn't help either.

Diez

Afghanistan
AF
Out[19]: u'AF'
AFG
Out[19]: u'AFG'
004
Out[19]: u'004'

What?

 

[Kless]

Afghanistan
AF
Out[19]: u'AF'
AFG
Out[19]: u'AFG'
004
Out[19]: u'004'

What?

That's the output got from ipython. As you can see, it prints
'Afghanistan' but it can not returns it. In change, the another
strings are returned.

Could it be because it isn't returning the value from the
recursivecall?

 

[Diez B. Roggisch]

I don't see anything that indicates that the returned object is the
empty string. Simply because there is no code testing for that. And of
course you don't show any debugging output, which doesn't help either.

Diez

Afghanistan
AF
Out[19]: u'AF'
AFG
Out[19]: u'AFG'
004
Out[19]: u'004'

What is that? IPython? And I don't see no empty string here. *What* I
see is the way python's interactive prompt puts out strings, like this:
u'foo'

Do you mean by any chance that you don't understand why print prints
foo, but the prompt shows u"foo"? That is because the prompt invokes

repr(o)

to print out an object:
u'foo'

Which means that the output includes quotes and the "u"-prefix in case
of an unicode object to help the user to see what the current object
looks like.

Diez

 

[Diez B. Roggisch]

Afghanistan
AF
Out[19]: u'AF'
AFG
Out[19]: u'AFG'
004
Out[19]: u'004'

What?

That's the output got from ipython. As you can see, it prints
'Afghanistan' but it can not returns it. In change, the another
strings are returned.

Could it be because it isn't returning the value from the
recursivecall?

Yep, I guess that's the problem. You need to do

if cell_tag:
return clean_tags(cell_tag)


Diez

 

[Marc 'BlackJack' Rintsch]

Afghanistan
AF
Out[19]: u'AF'
AFG
Out[19]: u'AFG'
004
Out[19]: u'004'

What?

That's the output got from ipython. As you can see, it prints
'Afghanistan' but it can not returns it. In change, the another strings
are returned.

Maybe you should show the *input* too…

Ciao,
Marc 'BlackJack' Rintsch

 

[Kless]

Kless schrieb:

Afghanistan
AF
Out[19]: u'AF'
AFG
Out[19]: u'AFG'
004
Out[19]: u'004'
What?

That's the output got from ipython. As you can see, it prints
'Afghanistan' but it can not returns it. In change, the another
strings are returned.

Could it be because it isn't returning the value from the
recursivecall?

Yep, I guess that's the problem. You need to do

if cell_tag:
    return clean_tags(cell_tag)

Diez

Thank you very much. It works now.

 

[Simon Brunning]

How is possible that I can print a variable, but when I use *return
var* it returns an empty string

What makes you think it's returning an empty string? You aren't doing
anything with the return value in line 26 of your example.