Clear console python linux

Clear Screen in Python

While working on the Python terminal (not a console)/interactive shell, some errors occur in the output. So, we have to clean the screen by pressing Control (Ctrl) and L keys simultaneously.

However, sometimes there are situations when the output has to be formatted properly to eliminate issues.

That’s why clearing the screen is based on the amount of output. In this situation, some commands need to be inserted in Python’s script to clear the screen as and when required.

So in this article, we will consider every possible way to clear the screen in Python without having any trouble or errors.

How to Clear Screen in Python Terminal

If you are working on a terminal, then use commands «cls» and «clear» to clear the terminal like this:

For Windows Users

If you are a Windows user and want to clear the screen in Python, you can easily do it using the «cls» command.

This command will instantly clear the screen, as you can see in the below image:

For Linux Users

Linux also has a command to clear screen in Python easily, so use the following command to do it:

Remember there is no specific function, built-in keywords, etc., available to clear the screen. That’s why users need to clear the screen according to them.

Clear Screen in Python Using Functions

Now let’s consider the functions we can use for clearing the screen in Python and remember that you can use these functions in both Windows and Linux.

Using click library

In this method, you can use click library to create a function, and it can work on both Windows and Linux.

# Python program to clear screen using click.clear() function # Import click library import click def clrscr(): # Clear screen using click.clear() function click.clear() print("Screen Cleared") clrscr()

Code Explanation:

In the above example, we are using click.clear() function from click library to clear screen.

This function works in Windows, Linux, and Mac operating systems.

Using \n (Newline character)

The whole way of not clearing the screen is as different as the answer is different. To remove any further error of the line, the user does not need to run the external process completely so that the screen can be cleared.

To clear the screen, you have to print new numbers which are higher than the height and can print something like this («\ n» * 10)

# Python program to clear the screen using \n # ‘\n’ is a newline character def clrscr(): # Print ‘\n’ 10 times print ("\n" * 10) print("Screen Cleared") clrscr()

Code Explanation:

In the above example, we need to clear a few lined of the screen so we use “\n” with print, this will add a newline character and clear x number of lines.

Clear screen program by using os.system method

There are many OS platforms like Windows, Linux, and macOS, so we need different commands to clear the screen. So as you can see in the below syntax, we have used the ‘_’ variable for holding the value of the last expression in the interpreter.

Now we will describe the os.system method to clear the screen in Python without having any troubles. As you can see in the below syntax, we have used the os.system command because It is a string that tells which command needs to be executed.

# Python program to clear the screen using os.system # Import os module import os def clrscr(): # Check if Operating System is Mac and Linux or Windows if os.name == 'posix': _ = os.system('clear') else: # Else Operating System is Windows (os.name = nt) _ = os.system('cls') print("Screen Cleared") clrscr()

Code Explanation:

We got «Screen Cleared» as we have printed it using the above syntax in the output.

In the above example first, we are checking if the operating system is Linux or not by checking the value of os.name method.
If the Operating system is Linux or Mac the value of os.name will be ”posix” .

And if the value of os.name is posix then we will run the function os.system(‘clear’) or else we will run function os.system(‘cls’) .

# Python program to clear screen # This function is applicable for all operating system like Windows, Linux, and OS-X # Import Library platform and os import platform import os def clr_scr(): # Check if the platform is Windows or linux # If Platform is Windows then run command os.system(‘cls’) else os.system(‘clear’) if(platform.system().lower()=="windows"): cmdtorun='cls' else: cmdtorun='clear' os.system(cmdtorun) clr_scr()

Code Explanation:

In the above example first, we check if the platform is Windows or Linux by using platform.system() function.

If the platform is “Windows” then we store the value of a command in the variable “cmdtorun” .

And at the end of the function, we are run the function os.system(cmdtorun) with the variable “cmdtorun” .

Using Subprocess Library

In this example, we have used the subprocess() function to execute an action for clearing the screen in output.

# Python program to clear the screen using subprocess.call() function # Import subprocess library import subprocess def clrscr(): cls = subprocess.call('cls',shell=True) print("Screen Cleared") clrscr()

Conclusion

So this is how you can easily clear the screen in Python using functions or commands in the Syntax. As we have mentioned earlier,

There are many methods to clear the screen in Python without getting any errors. But, in our opinion, a clear screen using a click library is the easiest because it works with both the operating systems Unix, Windows, and macOS. And it doesn’t need checking the OS.

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How to Clear Screen in Python?

Python os module is imported to clear the console screen in any operating system. The system() method of the os module with the string cls or clear as a parameter is used to clear the screen in windows and macOS/Linux, respectively.

Introduction to Python Clear Screen

Suppose there is a case where you have given the information of 3 students, and you have to print their details in a way like first there will be information of student 1 , then after some time information of student 2 will be displayed and then finally the information of student 3 will be displayed. So, in that case, we will have to clear the python console each time after displaying information about each student.

Image Explanation of the above Example

In an interactive shell/terminal , to clear the python console, we can use the ctrl+l command, but in most cases, we have to clear the screen while running the python script, so we have to do it programmatically.

We can clear screen programmatically, and it helps us to format the output in the way we want. We can also clear the output whenever we want many numbers of times.

How to clear the python console screen?

Clearing the console in python has different methods for different Operating Systems. These are stated below:

• In Windows: For clearing the console in the windows operating system, we will use the system() function from the os module with the ‘cls’ parameter.

Syntax of the system() function: system() function is in the os module, so the os module needs to be imported before using the system() function in Windows. After importing the os module, the string parameter ‘cls’ is passed inside the system function to clear the screen.

• In Linux and MacOS: For clearing the console in Linux and Mac operating systems, we will use the system() function from the os module with the ‘clear’ parameter.

Syntax: os module needs to be imported before using the system() function in Linux. After importing the os module string value parameter ‘clear’ is passed inside the system function to clear the screen.

• Ctrl+l: This method only works for Linux operating system. In an interactive shell/terminal, we can simply use ctrl+l to clear the screen.

Example of Python Clear Screen

Example 1: Clearing Screen in Windows Operating System

Let’s look at an example of the clear screen in python to clarify our understanding.

We will use the above-stated system() function for clearing the python console.

First, we will print some Output; then we will wait for 4 seconds using the sleep() function to halt the program for 4 seconds, and after that, we will apply os.system(‘cls’) to clear the screen.

The output window will print the given text first, then the program will sleep for 4 seconds, then the screen will be cleared, and program execution will be stopped.

Example 2: Clearing the screen, then printing some more information in Windows Operating System.

First we will print some Output, then we will wait for 1 second using the sleep() function, and after that, we will apply os.system(‘cls’) to clear the screen.

After that, we will print some more information.

The output window will print the first information, then the program will sleep for 1 second, and the screen will be cleared, and then it will print the second information. Again the program will sleep for 1 second, and at last, the program will be stopped after printing the final batch of information.

Example 3: Clearing Screen in Linux Operating System

We will use the above-stated system() method for clearing the python console.

First, we will print some Output; then we will wait for 5 seconds using the sleep() function, and after that, we will apply os.system(‘clear’) to clear the screen.

The output window will print the given text first, then the program will sleep for 5 seconds, then the screen will be cleared, and program execution will be stopped.

Example 4: What if we don’t know what OS we are working on?

There can be a case where we must first determine what OS we are working on. So, we will first determine whether the os is Windows, Linux, or Mac.

For Windows, the os name is «nt» and for Linux or mac, the OS name is «posix».

So we will check the os name and then accordingly apply the function.

For this case, the os name is nt , so windows console will be cleared after 2 seconds of program sleep, and then it will be terminated.

Conclusion

Now that we have seen various examples of how to clear the screen in python let us note down a few points.

• Clearing Screen can be done programmatically, and also it helps us to format the output the way we want.
• For clearing the console in the windows operating system, we will use the system() method from the os module with the ‘cls’ parameter.
• For clearing the console in Linux operating system, we will use the system() method from the os module with the ‘clear’ parameter.
• For windows, the os name is nt , and for Linux, it is posix , so we can also first determine the os and then clear the screen.

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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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