Formatted string to object

[janama]

Hi,

can such a thing be done somehow?
aaa = self.aaa
bbb = %s.%s % ('parent', 'bbb')

Can you use strings or %s strings like in the above or

aaa = 'string'
aaa.%s() % 'upper'

Somehow?

Thanks for taking a look at this

Regards
Janama

[Tim Chase]

> Can you use strings or %s strings like in the above or

aaa = 'string'
aaa.%s() % 'upper'

Somehow?

Looks like you want to play with the eval() function.

aaa = 'hello'
result = eval("aaa.%s()" % 'upper')
result

'HELLO'

Works for your second example. May work on your first example too.

-tkc

[bruno at modulix]

Tim Chase wrote:

Can you use strings or %s strings like in the above or

aaa = 'string'
aaa.%s() % 'upper'

Somehow?

Looks like you want to play with the eval() function.

aaa = 'hello'
result = eval("aaa.%s()" % 'upper')
result 'HELLO'

Using eval() or exec should be really avoided whenever possible IMHO.
This one is best done with getattr(obj, attribute_name [,default]), ie:

aaa = "string"
getattr(aaa, 'upper')() 'STRING'

--
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'o****@xiludom.gro'.split('@')])"

[Steven Bethard]

janama wrote:

can such a thing be done somehow?

aaa = self.aaa
bbb = %s.%s % ('parent', 'bbb')

Can you use strings or %s strings like in the above or

aaa = 'string'
aaa.%s() % 'upper'

Use the getattr() function::

class parent(object): ... class bbb(object):
... pass
... module_ns = __import__(__name__)
getattr(getattr(module_ns, 'parent'), 'bbb') <class '__main__.bbb'> import string
getattr(getattr(module_ns, 'string'), 'upper') <function upper at 0x00B502B0>

I've imported the module itself here so you can use getattr, but you
could also use globals() instead of the inner getattr() call::
getattr(globals()['parent'], 'bbb') <class '__main__.bbb'> getattr(globals()['string'], 'upper')

<function upper at 0x00B502B0>

HTH,

STeVe

[bruno at modulix]

janama wrote:

Hi,

can such a thing be done somehow?
aaa = self.aaa
bbb = %s.%s % ('parent', 'bbb')
Given the first line, I assume this is inside a method body, and parent
is a local var. Then the answer is:

bbb = getattr(locals()['parent'], 'bbb')

read the doc for these two functions to get more infos.
Can you use strings or %s strings like in the above or

aaa = 'string'
aaa.%s() % 'upper'

Somehow?

Not directly - but here again, getattr() is your friend.
--
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'o****@xiludom.gro'.split('@')])"

[janama]

Thankyou everyone for help last time:

The following works ok when setting a
wx.lib.buttons.GenBitmapTextButton's disabled bitmap in using wxpython

instead of this:
self.b1.SetBitmapDisabled(self.yellow)

i can use this:
aaa = 1
result1 = eval("self.b%s.SetBitmapDisabled(self.yellow)" % aaa)
result

YAY!
How would i to achieve this with getattr() ?

getattr(locals()['parent'], aaa) ???

Why would this be better as recommended in previous post here

http://groups.google.com.au/group/co...f080b21d668081

Any help appreciated

ta

[Scott David Daniels]

janama wrote:

i can use this:
aaa = 1
result = eval("self.b%s.SetBitmapDisabled(self.yellow)" % aaa)

.... How would i to achieve this with getattr() ?

result = getattr(self, 'b%s' % aaa).SetBitmapDisabled(self.yellow)

--Scott David Daniels
sc***********@acm.org