How hard can this be?

[Pieter Claerhout]

I think you're missing a small part here:

>>> import math
>>> if x > 0:
...  print "x is positive"
...
Traceback (innermost last):
  File "<stdin>", line 1, in ?
NameError: x
>>>

If you just type in this in the Python interpreter, it doesn't know yet
about the variable x, because it doesn't exist yet. You should do something
like:

>>> import math
>>> x = 2
>>> if x > 0:
...     print "x is positive"
...
x is positive
>>>

PS: you can even skip the import of math, because it is not even used in the
example shown above.

Cheers,


Pieter

Pieter Claerhout - Application Support
CreoScitex Europe - www.creoscitex.com


-----Original Message-----
From: Patrick Kirk [mailto:pknews at kirks.net]
Sent: Monday, May 21, 2001 5:13 PM
To: python-list at python.org
Subject: How hard can this be?


  if x > 0:
    print "x is positive"

You would think anyone could enter that but I can't.  I get the following:

>>> import math
>>> if x > 0:
...  print "x is positive"
...
Traceback (innermost last):
  File "<stdin>", line 1, in ?
NameError: x
>>>

I've tried creating a .py file saying:
  if x > 0:
    print "x is positive"
and importing it but that doesn't work either.

>>> import a
Traceback (innermost last):
  File "<stdin>", line 1, in
  File "a.py", line 1
    if x > 0:
    ^
SyntaxError: invalid syntax



The worrying thing is that this is copied directly from the tutorial so I
may well be off to Alan gould's site shortly.  But is there something
obvious that I'm missing?

Thanks in advance.


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