Execute commands from file

[Martin Blume]

"Steve Holden" schrieb 
> >>
> >> Try it on a file that reads something like
> >>
> >> xxx = 42
> >> print xxx
> >>
> >> and you will see NameError raised because the assignment 
> >> hasn't affected the environment for the print statement.
> >>
> > [...]
> > 
> No, because there isn't one. Now try adding a function 
> definition and see how well it works.
> 
C:\temp>more question.py
xxx=42
print xxx
def sowhat():
        print xxx

print xxx


C:\temp>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.
>>> exec open("question.py").read()
42
42
>>> sowhat()
42
>>> xxx
42


Seems to work great to me.

OTOH, this doesn't:
>>> inp=open("question.py")
>>> for l in inp:
...  exec l
...
42
Traceback (most recent call last):
  File "<stdin>", line 2, in ?
  File "<string>", line 1
    def sowhat():
                ^
SyntaxError: unexpected EOF while parsing


So it seems to depend on the way the file is read.


Regards
Martin