Re: IDLE: clearing the screen
On 08/06/2024 14.18, Rob Cliffe wrote:
OK, here is the advanced version:
import os
class _cls(object):
def __repr__(self):
os.system('cls')
return ''
cls = _cls()
Now when you type
cls
it clears the screen. The only flaw is that there is a blank line at the very top of the screen,
and the ">>>" prompt appears on the SECOND line.
(This blank line is because the IDLE prints the blank value returned by "return
''" and adds a newline to it, as it does when printing the value of any expression.)
Why have it return anything at all?
--
Michael F. Stemper
Indians scattered on dawn's highway bleeding;
Ghosts crowd the young child's fragile eggshell mind.
--
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Re: IDLE: clearing the screen
On 10/06/2024 09.32, Stefan Ram wrote:
"Michael F. Stemper" wrote or quoted:
On 08/06/2024 14.18, Rob Cliffe wrote:
OK, here is the advanced version:
import os
class _cls(object):
def __repr__(self):
os.system('cls')
return ''
cls = _cls()
...
Why have it return anything at all?
Because __repr__ needs to return a str.
Got it. Thanks for clarifying.
--
Michael F. Stemper
87.3% of all statistics are made up by the person giving them.
--
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Re: IDLE: clearing the screen
On 08/06/2024 20:18, Rob Cliffe via Python-list wrote:
> OK, here is the advanced version:
> import os
> class _cls(object):
> def __repr__(self):
> os.system('cls')
> return ''
> cls = _cls()
>
> Now when you type
> cls
> it clears the screen.
For me on a Mac it clears the terminal screen that I used
to launch IDLE and prints a single blank line on the IDLE
shell. (And I have to use "clear" instead of "cls" of course.
A quick Google suggests that printing Ctrl-L (formfeed?) might
be a platform agnostic solution. But that didn't work for me
in IDLE either. I think this is one where the best bet is to go
into the IDLE code and add a Shell submenu to clear screen!
Apparently it's been on the workstack at idle-dev for a long
time but is considered low priority...
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
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Re: IDLE: clearing the screen
OK, here is the advanced version:
import os
class _cls(object):
def __repr__(self):
os.system('cls')
return ''
cls = _cls()
Now when you type
cls
it clears the screen. The only flaw is that there is a blank line at
the very top of the screen, and the ">>>" prompt appears on the SECOND
line.
(This blank line is because the IDLE prints the blank value returned by
"return ''" and adds a newline to it, as it does when printing the value
of any expression.)
Best wishes
Rob Cliffe
--
https://mail.python.org/mailman/listinfo/python-list
Re: Fwd: IDLE: clearing the screen
On 05/06/2024 04:09, Cameron Simpson wrote:
On 04Jun2024 22:43, Rob Cliffe wrote:
import os
def cls(): x=os.system("cls")
Now whenever you type
cls()
it will clear the screen and show the prompt at the top of the screen.
(The reason for the "x=" is: os.system returns a result, in this case
0. When you evaluate an expression in the IDE, the IDE prints the
result. So without the "x=" you get an extra line at the top of the
screen containing "0".)
Not if it's in a function, because the IDLE prints the result if it
isn't None, and your function returns None. So:
def cls():
os.system("cls")
should be just fine.
Yes, you're right.
Rob Cliffe
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Re: Fwd: IDLE: clearing the screen
On 04Jun2024 22:43, Rob Cliffe wrote:
import os
def cls(): x=os.system("cls")
Now whenever you type
cls()
it will clear the screen and show the prompt at the top of the screen.
(The reason for the "x=" is: os.system returns a result, in this case
0. When you evaluate an expression in the IDE, the IDE prints the
result. So without the "x=" you get an extra line at the top of the
screen containing "0".)
Not if it's in a function, because the IDLE prints the result if it
isn't None, and your function returns None. So:
def cls():
os.system("cls")
should be just fine.
--
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Fwd: IDLE: clearing the screen
Welcome to Python! A great language for program development.
Answers might be platform-dependent (are you using WIndows, Linux, etc.).
However, the following works for me on WIndows. You can put it in the
startup.py file so you don't have to type it every time you start up the
IDLE.
import os
def cls(): x=os.system("cls")
Now whenever you type
cls()
it will clear the screen and show the prompt at the top of the screen.
(The reason for the "x=" is: os.system returns a result, in this case
0. When you evaluate an expression in the IDE, the IDE prints the
result. So without the "x=" you get an extra line at the top of the
screen containing "0".)
I am sure that some jiggery-pokery could be used so you don't have to
type the "()". But that's more advanced ...
Best wishes
Rob Cliffe
On 04/06/2024 14:34, Cave Man via Python-list wrote:
Hello everyone,
I am new to Python, and I have been using IDLE (v3.10.11) to run
small Python code. However, I have seen that the output scrolls to the
bottom in the output window.
Is there a way to clear the output window (something like cls in
command prompt or clear in terminal), so that output stays at the top?
Thanks in anticipation!
--
https://mail.python.org/mailman/listinfo/python-list
IDLE: clearing the screen
Hello everyone, I am new to Python, and I have been using IDLE (v3.10.11) to run small Python code. However, I have seen that the output scrolls to the bottom in the output window. Is there a way to clear the output window (something like cls in command prompt or clear in terminal), so that output stays at the top? Thanks in anticipation! -- https://mail.python.org/mailman/listinfo/python-list
