I'm using Xubuntu. When I start jshell in the terminal, I doesn't recognize when I press the enter key. Every other key gets detected normaly. Any suggestions how to fix that?
Solution for laptop users without an number pad on their keyboard:
Plug in an extra keyboard with a number-pad.
Start jshell, try to press enter on your laptop keyboard.
If it still doesn't work: On the extra keyboard: press "Num" key with which you activate the number pad.
Now pressing enter on your laptop keyboard again.
It should work now, otherwise turn the numberpad off and on again and repeat step 4.
Don't know why it works that way, but it does.
Write the following in your terminal:
numlockx on
Now it will work. To make this permanent, let Xubuntu execute this after booting.
I have started to read the book Python for absolute beginners (3rd edition) by Michael Dawson.
And one of the first challenges in the book is to run a programme the author wrote to see what it does.
That is what it looks like:
# Game Over
# Demonstrates the print function
print("Game Over")
input("\n\nPress the enter key to exit.")
When I then continue to run the module the following comes up.
"> RESTART: some of my information
Game Over
Press the enter key to exit."
However, when I press enter, the programme does not quit, like he said it would do in the book. He says, the window would disappear, which it does not.
What is wrong with my computer? I have a MacBook, am however using the newest python software from the website.
If you could help me, I would be very grateful, as I am just starting out and am a little wondered what is wrong with my stuff.
Thank you
Answer based on comment of OP:
When I then hit enter the following comes: ">>>" with every tap on
enter a new line with those three characters appears. The problem
still does not close though
So, after pressing enter, you see
>>>
and if you press enter again, you see
>>>
>>>
The "program" (which is the python script) is actually closed, and you have exited. The >>> you see is the python prompt.
To exit the python prompt, type exit() and press enter
I think this will work
First, install keyboard package using this code
pip install keyboard
Second, Use this code
import keyboard
# Game Over
# Demonstrates the print function
print("Game Over\n\nPress the enter key to exit.")
while True:
if keyboard.is_pressed("enter"):
exit(0)
I have to simulate button press in my script.
I have a big application running in which I have to put some values in some fields and press enter so proceed to next panel and so on.
I got idea about simulating ENTER using echo "\n", but unable to find out how to simulate buttons like Function keys, arrow keys and pressing alphanumeric characters.
Any idea will be helpful
You can use expect to do this.
I am writing a small game program in c++, which requires user to press some keys from keyboard. The problem with 'cin>>' or cin.get() is that it requires user to press enter to read data into memory. So, please help me to read key strokes with out pressing enter key. I work on Linux.
maybe you can use ncurses library?
By default the terminal is buffered and is in "cooked mode" where individual key presses are not sent to the application immediately.
You might be able to use something like GNU readline for input, or you could use ncurses for input and output, or if you just want to receive every key as it's pressed you could put the terminal into raw mode and do everything manually using the cfmakeraw function.
Is there a way to clear the "Run" console in PyCharm?
I want a code that delete/hide all the print() made previously.
Like the "clear_all" button, but without having to press it manually.
I have read that there is a way to do it in a terminal with os.system("cls"), but in PyCharm, it only adds a small square without clearing anything.
Also, I don't want to use print("\n" *100) since I don't want to be able to scroll back and see the previous prints.
In Pycharm:
CMD + , (or Pycharm preferences);
Search: "clear all";
Double click -> Add keyboard shortcut (set it to CTRL + L or anything)
Enjoy this new hot key in your Pycharm console!
Pycharm Community Edition 2020.1.3
You can right click anywhere above the current line on the console, and choose the "Clear All" option. It'll clear the console
How to
Download this package https://github.com/asweigart/pyautogui. It allows python to send key strokes.
You may have to install some other packages first
If you are installing PyAutoGUI from PyPI using pip:
Windows has no dependencies. The Win32 extensions do not need to be
installed.
OS X needs the pyobjc-core and pyobjc module installed (in that
order).
Linux needs the python3-xlib (or python-xlib for Python 2) module
installed.
Pillow needs to be installed, and on Linux you may need to install additional libraries to make sure Pillow's PNG/JPEG works correctly. See:
Set a keyboard shortcut for clearing the run window in pycharm as explained by Taylan Aydinli
CMD + , (or Pycharm preferences);
Search: "clear all"; Double click ->
Add keyboard shortcut (set it to CTRL + L or anything)
Enjoy this new hot key in your Pycharm console!
Then if you set the keyboard shortcut for 'clear all' to Command + L use this in your python script
import pyautogui
pyautogui.hotkey('command', 'l')
Example program
This will clear the screen after the user types an input.
If you aren't focused on the tool window then your clear hot-key won't work, you can see this for yourself if you try pressing your hot-key while focused on, say, the editor, you won't clear the embedded terminals contents.
PyAutoGUI has no way of focusing on windows directly, to solve this you can try to find the coordinate where the run terminal is located and then send a left click to focus, if you don't already know the coordinates where you can click your mouse you can find it out with the following code:
import pyautogui
from time import sleep
sleep(2)
print(pyautogui.position())
An example of output:
(2799, 575)
and now the actual code:
import pyautogui
while True:
input_1 = input("?")
print(input_1)
pyautogui.click(x=2799, y=575)
pyautogui.hotkey('command', 'l')
Easy Method:
Shortcut: Control K,
Right click on terminal and clear Buffer
There's also another way of doing it using the system class from os. All you need to do is have this code:
from os import system, name
# define our clear function
def clear():
# for windows the name is 'nt'
if name == 'nt':
_ = system('cls')
# and for mac and linux, the os.name is 'posix'
else:
_ = system('clear')
# Then, whenever you want to clear the screen, just use this clear function as:
clear()
However, in order for this functionality to work in pycharm, you need to enable "Emulate terminal in output console". You can find this under edit configuration of the file where you want to use the clear function, then it's under Execution option. Here's a screenshot: pycharm screensho
You could just do a ("\n" * 100000000), so it'll be impossible to scroll back.
In PyCharm terminal you can type 'cls' just like in linux terminal.
For Python Console (where you see the output) assign a shortkey for "clear all" in File -> Settings -> Keymap -> Other -> "Clear all"
You can also click somewhere on the PythonConsole -> Right button -> clear.
Hope it helps
I just relised that instead of going to the trouble of setting up a shortcut, you could just set up a command using PyAutoGUI to click on the trash bin on the side of the window e.g
note, to install pyautogui click on the end of the import pyautogui line, then press alt+enter and click install pyautogui.
import pyautogui
# to find the coordinates of the bin...
from time import sleep
sleep(2) # hover your mouse over bin in this time
mousepos = pyautogui.position() gets current pos of mouse
x,y = mousepos # storing mouse position
print(mousepos) # prints current pos of mouse
# then to clear it;
pyautogui.click(x, y) # and just put this line of code wherever you want to clear it
(this isn't perfect thanks to the time it takes to run the code and using the mouse, but it is reasonable solution depending on what you are using it for.)
I hope this answer is helpful even though this is an old question.
Just click the trash can icon to the left of the command window and it clears the command history!
In PyCharm 2019.3.3 you can right click and select "Clear All" button.This is deleting all written data inside of the console and unfortunately this is manual.
Sorry to say this, here the main question is how to do it programmatically means while my code is running I want my code to clear previous data and at some stage and then continue running the code. It should work like reset button.
After spending some time on research I solved my problem using Mahak Khurmi's solution https://stackoverflow.com/a/67543234/16878188.
If you edit the run configuration you can enable "emulate terminal in output console" and you can use the os.system("cls") line and it will work normally.
Iconman had the easiest answer.
But simply printing "\n" * 20 (or whatever your terminal height is) will clear the screen, and the only difference is that the cursor is at the bottom.
I came here because I wanted to visually see how long each step of a complex process was taking (I'm implementing a progress bar), and the terminal is already full of scrolling logging information.
I ended up printing ("A" * 40) * 20, and then "B" and "C" etc., and then filming it. Reviewing the video made it easy to see how many seconds each step took. Yes I know I could use time-stamps, but this was fun!