Tricky Areas in Python

[Fredrik Lundh]

Alex Martelli wrote:

> No, LC goes back a long way -- I think it was in 2.0 already, 2.1 for
> sure.

$ python1.5 -c "print [x for x in 'abc']"
  File "<string>", line 1
    print [x for x in 'abc']
               ^
SyntaxError: invalid syntax
$ python2.0 -c "print [x for x in 'abc']"
['a', 'b', 'c']

I was a bit surprised to find that 2.0 had variables, though:

$ python2.0 -c "[x for x in y]"
Traceback (most recent call last):
  File "<string>", line 1, in ?
NameError: There is no variable named 'y'
$ python2.1 -c "[x for x in y]"
Traceback (most recent call last):
  File "<string>", line 1, in ?
NameError: name 'y' is not defined

;-)

</F>