learning to program with Python

[Ricardo]

Hi, my name is Ricardo and i'm learning to program in Python with
version 2.3.3, i'm also using the latest version of PythonWin(163) but
i'm trying to do it with a book (Written in Portuguese) that covers the
version 2.1, and of course i'm having a problem. The code in wich i'm
having problems is as follows:

class Gato:
"um felino domesticado"
def __init__(self, sexo, corPelo=None):
self.sexo = sexo
if corPelo != None
self.corPelo = corPelo
def miar(self):
if self.sexo == "m":
return "MIAU"
else:
return "miauuuu"
the book says that it should be done like this, but when i finnish the
5th line(if corPelo != None) and press ENTER, it gives me the error:

Traceback ( File "<interacti ve input>", line 5
if corPelo != None
^
SyntaxError: invalid syntax

I hope someone can help me?
Thanks in advance anyway.

Ricardo

[stewart]

Re: learning to program with Python

Ricardo wrote:
[color=blue]
> The code in wich i'm
> having problems is as follows:
>[/color]
....[color=blue]
> if corPelo != None
> self.corPelo = corPelo[/color]
....

Oi Ricardo, tudo bem?

I see at least two problems here. Python requires brackets around the 'if'
comparison, and a colon at the end of the if statement. Try re-writing
your statement as:
if (corPelo != None):
self.corPelo = corPelo

Boa sorte!
S

[Dennis Lee Bieber]

Re: learning to program with Python

On Mon, 23 Feb 2004 06:15:32 GMT, stewart
<stewart@midtoa d.homelinux.org > declaimed the following in
comp.lang.pytho n:
[color=blue]
> I see at least two problems here. Python requires brackets around the 'if'
> comparison, and a colon at the end of the if statement. Try re-writing[/color]

The colon is needed, yes... but not the parentheses...

--[color=blue]
> =============== =============== =============== =============== == <
> wlfraed@ix.netc om.com | Wulfraed Dennis Lee Bieber KD6MOG <
> wulfraed@dm.net | Bestiaria Support Staff <
> =============== =============== =============== =============== == <
> Home Page: <http://www.dm.net/~wulfraed/> <
> Overflow Page: <http://wlfraed.home.ne tcom.com/> <[/color]

[Nicolas Fleury]

Re: learning to program with Python

stewart wrote:[color=blue]
> I see at least two problems here. Python requires brackets around the 'if'
> comparison, and a colon at the end of the if statement. Try re-writing
> your statement as:
> if (corPelo != None):
> self.corPelo = corPelo[/color]

No, Python doesn't require parenthesis or brackets around the
comparison. Any expression can have optional parenthesis.

if corPelo != None:
self.corPelo = corPelo

is enough.

Regards,

Nicolas