evaluation question

[Louis Krupp]

On 1/27/2023 9:37 AM, Muttley at dastardlyhq.com wrote:
> Hi
>
> This is probably a dumb newbie question but I've just started to learn
> python3 and eval() isn't behaving as I'd expect in that it works for
> some things and not others. eg:
>
>>>> eval("1+1")
> 2
>>>> eval("print(123)")
> 123
>>>> eval("for i in range(1,10): i")
> Traceback (most recent call last):
>    File "<stdin>", line 1, in <module>
>    File "<string>", line 1
>      for i in range(1,10): i
>        ^
> SyntaxError: invalid syntax
>
> Why did the 3rd one fail? Does it not handle complex expressions?
>
> Thanks for any help
>
>
>

This might -- or might not -- be useful:

eval( "print( [i for i in range(1, 10)] )" )

It prints a list, but you probably knew that:

[1, 2, 3, 4, 5, 6, 7, 8, 9]

Louis