eval() in python

[Xah Lee]

is it possible to eval a string like the following?

m='''
i0=[0,1]
i1=[2,3]
i2=[4,'a']

h0=[]
for j0 in i0:
h1=[]
for j1 in i1:
h2=[]
for j2 in i2:
h2.append(f(j0,j1,j2))
h1.append( h2[:] )
h0.append( h1[:] )
return h0'''

perhaps i'm tired, but why can't i run:

t='m=3'
print eval(t)

the doc seems to suggest that eval is only for expressions... it says
uses exec for statements, but i don't seem to see a exec function?

Xah
(e-mail address removed)
∑ http://xahlee.org/

 

[Peter Hansen]

the doc seems to suggest that eval is only for expressions... it says
uses exec for statements, but i don't seem to see a exec function?

Because it's a statement: http://docs.python.org/ref/exec.html#l2h-563

 

[harold fellermann]

the doc seems to suggest that eval is only for expressions... it says

uses exec for statements, but i don't seem to see a exec function?

Python 2.4 (#1, Dec 30 2004, 08:00:10)
[GCC 3.3 20030304 (Apple Computer, Inc. build 1495)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
- harold -

 

[Jeff Epler]

Because it's a statement: http://docs.python.org/ref/exec.html#l2h-563

but the documentation is sooooooo baaaaaaad that it makes babies cry and
maybe spreads herpes too.

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[Benji York]

hello Xah Lee

Note that because "exec" is a statement, the parentheses above are
superfluous.

 

[Martin Blume]

perhaps i'm tired, but why can't i run:

t='m=3'
print eval(t)

Perhaps you didn't read the documentation?
Perhaps you didn't try hard enough?


C:\WINNT>c:\programme\python\python
Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)]
on win32
Type "help", "copyright", "credits" or "license" for more
information.Traceback (most recent call last):

HTH
Martin