Execute external code and get return value

[Michele Petrazzo]

Hi,
I want to execute an external code, that become from a text file (pe),
call a function inside it and get its return value:

# ext_code.txt

def funct2Call():
return True

# test.py

sourcecode = open("ex_code.t xt").read()
comp_code = compile(sourcec ode, "My_test", "exec")

#do something like this
return_value = comp_code.funct 2Call()

But I can't...

I find this:
http://tinyurl.com/nwbpk

but here, it call from the external code a function inside my code. I
want the opposite!
Is there a solution for do this?

Thanks,
Michele

[Peter Otten]

Re: Execute external code and get return value

Michele Petrazzo wrote:

I want to execute an external code, that become from a text file (pe),
call a function inside it and get its return value:

namespace = {}
execfile("ext_c ode.txt", namespace)
print namespace["funct2Call "]()

Peter

[Michele Petrazzo]

Re: Execute external code and get return value

Michele Petrazzo wrote:

Auto reply:

I find this: http://tinyurl.com/nwbpk
>

Following this link, here is my solution:


code = """
def funct2Call():
return "It work!"

object.method(f unct2Call)
"""

class Object(object):
def method(self, value):
self._callable = value
def __call__(self):
return self._callable( )

# populate the namespace
namespace = {
"object": Object()
}

# execute the code
exec code in namespace

namespace["object"]()

Michele

[Michele Petrazzo]

Re: Execute external code and get return value

Peter Otten wrote:

Michele Petrazzo wrote:
>

>I want to execute an external code, that become from a text file
>(pe), call a function inside it and get its return value:

>
namespace = {} execfile("ext_c ode.txt", namespace) print
namespace["funct2Call "]()
>

Sorry, I forgot to say that "ext_code.t xt" isn't a real file, but a text
become from a db, so or I create a temp file where I save the code and
pass its path to execfile, or use my post.

Peter

Thanks,
Michele

[Peter Otten]

Re: Execute external code and get return value

Michele Petrazzo wrote:

Following this link, here is my solution:
>
>
code = """
def funct2Call():
return "It work!"
>
object.method(f unct2Call)
"""
>
class Object(object):
def method(self, value):
self._callable = value
def __call__(self):
return self._callable( )
>
# populate the namespace
namespace = {
"object": Object()
}
>
# execute the code
exec code in namespace
>
namespace["object"]()

Just in case you didn't see it -- the following will work as well:

code = """
def funct2Call():
return "It work!"
"""

namespace = {}
exec code in namespace
namespace["funct2Call "]()

Peter