Очистить вывод python notebook

Очистить вывод python notebook

Injupyter notebook parametric run python When, for fear too many output file is too large, you want timely removal of output notebook.
code with other people see easydl of clear_output() . Call is simple:

from easydl import clear_output print('before') clear_output() # Clear output print('after') 

def clear_output(): """ clear output for both jupyter notebook and the console """ import os os.system('cls' if os.name == 'nt' else 'clear') if is_in_notebook(): from IPython.display import clear_output as clear clear() 

• terminal / console output conditioning system clear / cls Clear command
• Output notebook with IPython.display.clear_output() Remove

among them is_in_notebook() Is also a function easydl, used in notebook in judgment is not.
Code check that:is_in_notebook

def is_in_notebook(): import sys return 'ipykernel' in sys.modules 

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Очистить вывод python notebook

Last updated: Apr 23, 2023
Reading time · 4 min

# Table of Contents

# Clear Cell Output while running code in Jupyter Notebook

Use the clear_output() method to clear the output of a cell while running code.

The method enables you to wait to clear the output until new output is available to replace it.

Copied! 
from IPython.display import clear_output for i in range(50): clear_output(wait=True) print('bobbyhadz.com') 

The only argument we passed to the clear_output method is a boolean.

If set to True , then the method waits to clear the output until new output is available to replace it.

Notice that only a single message is printed after iterating over the range 50 times.

Make sure to specify the message that you want to actually print after the call to the clear_output() method.

If you need to flush the output when calling print() set the flush argument to True .

Copied! 
from IPython.display import clear_output for i in range(50): clear_output(wait=False) print('bobbyhadz.com', flush=True) 

# Clearing the Cell Output from the top menu in Jupyter Notebook

If you need to clear the cell output from the top menu:

Here is a short clip that demonstrates how this works.

Note that this only clears the output of the current cell.

If you need to clear the output of all cells:

Here is a short gif that shows how this works.

# Setting up a keyboard shortcut to clear cell output in Jupyter Notebook

If you need to set up a keyboard shortcut to clear the output of a cell:

1. Click on Help in the top menu and then click Edit Keyboard Shortcuts.

1. Press Ctrl + F (or Cmd + F on macOS) and search for clear.
2. If you need to set a keyboard shortcut to clear the output of a single cell, look for the clear cell output command.

1. Click on the add shortcut input field and specify your preferred keyboard shortcut, e.g. Ctrl-4 or Ctrl-O .
2. If you need to set a keyboard shortcut to clear the output of all cells, look for the clear all cells output command toward the bottom.

1. Set your preferred keyboard shortcut for the command.
2. Once you set the keyboard shortcut, click on the OK button.

To use your keyboard shortcuts, click to the left of your cell so that the left border becomes blue and press your keyboard shortcut.

To not have to click with your mouse, you can just press Ctrl + Enter to run the code in the cell so that the left border becomes blue and then press your keyboard shortcut.

# Clearing the cell output via the Command Palette in Jupyter Notebook

You can also clear the cell output via the command palette:

1. Select clear all cells output if you want to clear the output of all cells.
2. Select clear cell output if you only want to clear the output of a single cell.

# Additional Resources

You can learn more about the related topics by checking out the following tutorials:

• How to check your Python version in Jupyter Notebook
• Note: you may need to restart the kernel to use updated packages
• How to add a new line in a Jupyter Notebook markdown cell
• Error executing Jupyter command ‘notebook’: [Errno 2] No such file or directory
• The purpose of the exclamation mark (!) in Jupyter Notebook
• How to show (or hide) the Line Numbers in Jupyter Notebook
• How to display Lists as a Table in Jupyter Notebook
• How to show a PIL Image in Jupyter Notebook
• How to measure Cell execution Time in Jupyter Notebook
• [Solved] Jupyter Notebook not running code Stuck on In [*]
• Pycharm does not show a Matplotlib Plot issue [Solved]
• Reload a module and its submodules in Jupyter Notebook
• Jupyter Notebook 500: Internal Server Error [Solved]
• IOPub data rate exceeded in Jupyter Notebook [Solved]

I wrote a book in which I share everything I know about how to become a better, more efficient programmer.

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Как очистить консоль в Python

В данном руководстве рассмотрим различные способы очистки консоли в Python.

Способ 1: использование модуля os

Используйте команду os.system(‘clear’) для очистки консоли на Mac и Linux в Python и команду os.system(‘cls’) для очистки консоли на платформе Windows. Для программной очистки консоли в Python необходимо импортировать модуль os и использовать его метод os.system(). os — это встроенная библиотека, которая поставляется вместе с установкой Python3.

Я использую Mac, поэтому мне нужно писать команды, связанные с Linux.

Если вы запустите приведенную выше команду в своей консоли, она очистит экран.

Для пользователя Windows используйте следующий код.

Вы можете использовать лямбда-функцию, если не хотите использовать полную.

Способ 2: с помощью функции subprocess.call()

Вы можете использовать функцию subprocess.call() в модуле подпроцесса, которая позволяет создавать новые процессы, подключаться к их каналам ввода/вывода/ошибки и очищать консоль в Python.

Если вы запустите приведенный выше код, он очистит консоль.

Способ 3: использование escape-кодов ANSI

Escape-коды ANSI — это последовательности символов, которые можно включить в строку, чтобы указать различные типы форматирования вывода терминала, например, изменить цвет или положение курсора или очистить консоль.

Код очистит консоль Python.

«\033» — управляющий символ, а c — код для сброса терминала.

Аргумент «end» устанавливается в пустую строку, чтобы гарантировать, что после escape-кода не будет добавлен дополнительный разрыв строки.

Способ 4: применение пакета ipykernel в блокнотах Jupyter

В блокнотах Jupyter вы можете очистить вывод ячейки с помощью пакета ipykernel.

Пакет ipykernel предоставляет API для управления ядром Jupyter, включая возможность очистки вывода ячейки или, в нашем случае, программной консоли.

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4 Different Ways to Clear Console in Python

You must import the os module and use its os.system() method to clear the console programmatically in Python. The os is a built-in library that comes with Python3 installations.

I am using Mac, so I need to write Linux-related commands.

import os def clear_console(): os.system('clear') clear_console()

If you run the above command in your console, it will clear the screen.

For the Windows user, use the following code.

import os def clear_console(): os.system('cls') clear_console()

You can use the lambda function if you don’t want to use the full function.

import os def clear_console(): return os.system('clear') clear_console()

And it will clear the console.

That’s pretty much it for clearing the console in Python.

Method 2: Using the subprocess.call() function

You can use the subprocess.call() function in the subprocess module that allows you to spawn new processes, connect to their input/output/error pipes and clear the console in Python.

Example

import subprocess import os subprocess.call('clear' if os.name =='posix' else 'cls', shell=True)

If you run the above code, it will clear the console.

Method 3: Using the ANSI escape codes

ANSI escape codes are sequences of characters that can be included in a string to specify various types of formatting for terminal output, such as changing the color or cursor position or clearing the console.

Example

It will clear the Python console.

The “\033” is the escape character, and c is the code to reset the terminal.

The “end” argument is set to an empty string to ensure no extra line break is added after the escape code.

Method 4: Using the ipykernel package in Jupyter notebooks

In Jupyter notebooks, you can clear the output of a cell by using the ipykernel package.

The ipykernel package provides an API for controlling the Jupyter kernel, including the ability to clear the output of a cell, or in our case, it is console programmatically.

Example

from IPython.display import clear_output clear_output()

The clear_output() function from the IPython.display module can be used to clear the output of a cell in a Jupyter notebook.

Conclusion

In Python, you can clear the console by using the following methods based on the platform you are using:

For Windows

import os os.system('cls' if os.name == 'nt' else 'clear')

For Linux/Unix

The os.system() method takes different parameters based on your platform because the os.system() function is platform-dependent and may not work on all systems.

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