A variables variables

[Gandalf]

how can I declare a variable with another variable name?

for example I will use PHP:

$a= "hello";

$a_hello="baybay";

print ${'a_'.$a) //output: baybay


how can i do it with no Arrays using python

thanks!

 

[castironpi]

how can I declare a variable with another variable  name?

for example  I will use PHP:

$a= "hello";

$a_hello="baybay";

print ${'a_'.$a)  //output: baybay

how can i do it with no Arrays using  python

thanks!

Here's one idea.

Also, you can look up locals() and globals(), or getattr, if you do
this in a class.

 

[Mohamed Yousef]

i don't know if this volatiles array condition or not
but any way

q='asd'
asdasd=20
print globals()[q+'asd']

 

[Benjamin]

how can I declare a variable with another variable  name?

for example  I will use PHP:

$a= "hello";

$a_hello="baybay";

print ${'a_'.$a)  //output: baybay

Doing this sort of thing in Python is very anti idiom.

how can i do it with no Arrays using  python

Why would you not want to use a list? I see no reason not to.

 

[Terry Reedy]

how can I declare a variable with another variable name?

for example I will use PHP:

$a= "hello";

$a_hello="baybay";

print ${'a_'.$a) //output: baybay


how can i do it with no Arrays using python

Others have given you the direct answer. But using lists or dicts is
almost always a better solution in Python than synthesizing global/local
namespace names.

a={'hello':'baybay'}
print a['hello']

 

[Gandalf]

OK thank you all !

sometimes you just getting use to somethings...

 

[Maric Michaud]

Le Sunday 24 August 2008 03:24:29 Terry Reedy, vous avez écrit :

Others have given you the direct answer.

Well using locals() is the right answer, it is a very bad use case for eval.

But using lists or dicts is
almost always a better solution in Python than synthesizing global/local
namespace names.

a={'hello':'baybay'}
print a['hello']

But locals() *is* an already made dict, very convenient for use locally and
read-only.

[155]: var1 = "easy"
[156]: var2 = "proper"
[157]: var3 = "locals"
[158]: print "a %(var2)s and %(var1)s use of %(var3)s with %(var3)s()" %

locals()
a proper and easy use of locals with locals()

 

[Bruno Desthuilliers]

castironpi a écrit :

Here's one idea.

bayb

Please avoid this kind of yucky ugly hacks.