goto, cls, wait commands

[BOOGIEMAN]

I've just finished reading Python turtorial for non-programmers
and I haven't found there anything about some usefull commands I used in
QBasic. First of all, what's Python command equivalent to QBasic's "goto" ?
Secondly, how do I clear screen (cls) from text and other content ?
And last, how do I put program to wait certain amount of seconds ?
If I remeber correctly I used to type "Wait 10" and QBasic waits
10 seconds before proceeding to next command.

[Fouff]

BOOGIEMAN a écrit :

I've just finished reading Python turtorial for non-programmers
and I haven't found there anything about some usefull commands I used in
QBasic. First of all, what's Python command equivalent to QBasic's "goto" ? I had a professor that told me that using goto in prog is that there is
a mistake in the algorythm.
If I remember, I think there is no goto instruction in python !
Secondly, how do I clear screen (cls) from text and other content ? I don't understand well what you exactly want to do. Can you explain
more please.
And last, how do I put program to wait certain amount of seconds ?
If I remeber correctly I used to type "Wait 10" and QBasic waits
10 seconds before proceeding to next command.

import time
time.sleep(10)

[Duncan Booth]

BOOGIEMAN wrote:

I've just finished reading Python turtorial for non-programmers
and I haven't found there anything about some usefull commands I used
in QBasic. First of all, what's Python command equivalent to QBasic's
"goto" ?
There isn't one. Why do you think you need this?
Secondly, how do I clear screen (cls) from text and other
content ?
That depends on your computer, and how you are running your program.
One way which *might* work is:

import os
os.system("cls" )
And last, how do I put program to wait certain amount of
seconds ? If I remeber correctly I used to type "Wait 10" and QBasic
waits 10 seconds before proceeding to next command.

import time
time.sleep(10)

[Christos TZOTZIOY Georgiou]

On Thu, 10 Feb 2005 16:59:04 +0100, rumours say that BOOGIEMAN
<BO*********@YA HOO.COM> might have written:

Best advice: try to forget QBasic, and try again reading the tutorial. That, if
your post is serious. If it isn't, keep reading my reply :)

I've just finished reading Python turtorial for non-programmers
and I haven't found there anything about some usefull commands I used in
QBasic. First of all, what's Python command equivalent to QBasic's "goto" ?
goto for python:

http://entrian.com/goto/index.html

Please ignore the line in bold red.
Secondly, how do I clear screen (cls) from text and other content ?
Python clears after itself, so you don't need to. If you insist though,

..>> import os
..>> os.system('cls' )

That on a windows "console".

If on IDLE, try closing the window and reopening it.
And last, how do I put program to wait certain amount of seconds ?
If I remeber correctly I used to type "Wait 10" and QBasic waits
10 seconds before proceeding to next command.

(A serious answer for a change) Waiting is time related. So import time and
call the time.sleep function.

Try entering help at a Python prompt.
--
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...

[Grant Edwards]

On 2005-02-10, BOOGIEMAN <BO*********@YA HOO.COM> wrote:

First of all, what's Python command equivalent to QBasic's "goto" ?
There isn't one.

One defines functions and calls them. One uses for and while
loops. One uses list comprehensions. One uses if/elif/else.
Secondly, how do I clear screen (cls) from text and other content ?
That depends on the host system. Under Unix, you can do
os.system('clea r'). Or you can use ncurses. Or you can use
os.system to run the 'tput' command with appropriate parameters
-- see the tput man page.

There's probably some way to do it in Windows as well, but I
don't do windows.
And last, how do I put program to wait certain amount of
seconds ?

time.sleep(1) will wait for 1 second.
time.sleep(5.5) will wait for 5.5 seconds.

--
Grant Edwards grante Yow! Yow! I like my new
at DENTIST...
visi.com

[Alan Kennedy]

[BOOGIEMAN]

I've just finished reading Python turtorial for non-programmers
and I haven't found there anything about some usefull commands I used in
QBasic. First of all, what's Python command equivalent to QBasic's "goto" ?
Oh no! You said the "G" word! That's a dirty word in computer science
circles, because of the perception that "goto" (there, I said it, ugh!)
can lead people to structure their code badly, i.e. write bad programs.

Instead, most modern programming languages offer a range of control and
looping constructs that allow you to code your intention more clearly
than with goto. Python examples include "while", "for .. in ..", "try ..
except ..", etc, etc.

So in order to answer your question, you're probably going to have to be
more specific on what you want "goto" for.

Interestingly, "goto"s are undergoing a bit of renaissance in coding
circles, but people have felt compelled to call them something
different: continuations. But you're probably not interested in them.
And python can't do them anyway.
Secondly, how do I clear screen (cls) from text and other content ?
That depends on

A: What type of display device you're using
B: What type of interface is being rendered on that display (command
line, GUI, IDE, etc)
C: Perhaps what operating system you are using.
And last, how do I put program to wait certain amount of seconds ?
If I remeber correctly I used to type "Wait 10" and QBasic waits
10 seconds before proceeding to next command.

Ahhhhhh, a simple question! :-)

import time
time.sleep(10.0 )

HTH,

--
alan kennedy
------------------------------------------------------
email alan: http://xhaus.com/contact/alan

[Bruno Desthuilliers]

Duncan Booth a écrit :

BOOGIEMAN wrote:

(snip)

Secondly, how do I clear screen (cls) from text and other
content ?

That depends on your computer, and how you are running your program.
One way which *might* work is:

import os
os.system("cls" )

*might* work... !-)
bruno@bibi modulix $ cls
-bash: cls: command not found

Bad luck ! didn't work !-)

Bruno

[Bruno Desthuilliers]

Grant Edwards a écrit :

On 2005-02-10, BOOGIEMAN <BO*********@YA HOO.COM> wrote:

First of all, what's Python command equivalent to QBasic's "goto" ?

There isn't one.

One defines functions and calls them. One uses for and while
loops. One uses list comprehensions. One uses if/elif/else.

and even sometimes break, continue, and return !-)

[Grant Edwards]

On 2005-02-10, Bruno Desthuilliers <bd************ *****@free.quel quepart.fr> wrote:

Grant Edwards a écrit :

On 2005-02-10, BOOGIEMAN <BO*********@YA HOO.COM> wrote:

First of all, what's Python command equivalent to QBasic's "goto" ?

There isn't one.

One defines functions and calls them. One uses for and while
loops. One uses list comprehensions. One uses if/elif/else.

and even sometimes break, continue, and return !-)

I forgot to mention try/except. When I do use goto in C
programming it's almost always to impliment what would have
been a try/except block in Python.

--
Grant Edwards grante Yow! ... the MYSTERIANS
at are in here with my
visi.com CORDUROY SOAP DISH!!

[Ulf Göransson]

Bruno Desthuilliers wrote:

Duncan Booth a écrit :

BOOGIEMAN wrote:

Secondly, how do I clear screen (cls) from text and other
content ?

That depends on your computer, and how you are running your program.
One way which *might* work is:

import os
os.system("cls" )

*might* work... !-)
bruno@bibi modulix $ cls
-bash: cls: command not found

Bad luck ! didn't work !-)

Works for me! But then again...

kairos:ug> cat cls
#! /usr/local/bin/python
print "\xc",

/ug 8-)