Python get terminal width

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How to get linux console window width in python?

When working with a Linux console window in Python, it may be necessary to determine the width of the window in order to properly format text or other output. This can be a bit tricky, as the method for determining the window size will depend on the specific operating system and terminal being used.

Method 1: Using the shutil module

To get the Linux console window width in Python using the shutil module, you can use the get_terminal_size() function. This function returns a named tuple that contains the console window’s width and height.

Here is an example code snippet:

import shutil terminal_size = shutil.get_terminal_size() print("Terminal size: ", terminal_size) print("Width: ", terminal_size.columns)

The get_terminal_size() function does not require any arguments, and it automatically detects the console window’s size.

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In the example above, we first import the shutil module. Then, we call the get_terminal_size() function and store the result in the terminal_size variable.

Next, we print the terminal_size variable, which will output something like this: os.terminal_size(columns=80, lines=24) . This indicates that the console window’s width is 80 columns, and the height is 24 lines.

Finally, we print only the width by accessing the columns attribute of the terminal_size named tuple.

That’s it! You now know how to get the Linux console window width in Python using the shutil module.

Method 2: Using the os and fcntl modules

To get the Linux console window width in Python using the os and fcntl modules, follow the steps below:

console_fd = os.open('/dev/tty', os.O_RDONLY)

size = struct.unpack('hh', fcntl.ioctl(console_fd, termios.TIOCGWINSZ, '1234'))

Putting it all together, here’s the complete code:

import os import fcntl import struct import termios console_fd = os.open('/dev/tty', os.O_RDONLY) size = struct.unpack('hh', fcntl.ioctl(console_fd, termios.TIOCGWINSZ, '1234')) width = size[1] print("Console window width:", width)

That’s it! Running the code will output the width of the console window.

Method 3: Using the subprocess module

To get the Linux console window width in Python using the subprocess module, you can execute the stty command and parse its output. Here’s how you can do it step by step:

Define a function that executes the stty command and parses its output to extract the window width:

def get_console_width(): result = subprocess.run(['stty', 'size'], stdout=subprocess.PIPE) rows, columns = result.stdout.decode().split() return int(columns)

width = get_console_width() print(f'The console window width is width> characters.')

That’s it! Here’s the full code with comments:

import subprocess def get_console_width(): # Execute the stty command and capture its output result = subprocess.run(['stty', 'size'], stdout=subprocess.PIPE) # Decode the output and split it into rows and columns rows, columns = result.stdout.decode().split() # Convert the columns string to an integer and return it return int(columns) width = get_console_width() print(f'The console window width is width> characters.')

Method 4: Using the terminal\_size package

To get the Linux console window width in Python using the terminal_size package, you can follow these steps:

pip install terminal_size

width, height = terminal_size.get_terminal_size()

Here’s an example code snippet that demonstrates how to get the console window width using the terminal_size package:

import terminal_size width, height = terminal_size.get_terminal_size() print(f"Console window width: width>")

This code will print the console window width to the console.

You can also use the get_terminal_size() method to get the console window height:

import terminal_size width, height = terminal_size.get_terminal_size() print(f"Console window height: height>")

This code will print the console window height to the console.

In summary, to get the Linux console window width in Python using the terminal_size package, you need to install the package, import it, and use the get_terminal_size() method to get the width and height of the console window.

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Python: Get height and the width of console window

Write a Python program to get the height and width of the console window.

Sample Solution:-

Python Code:

def terminal_size(): import fcntl, termios, struct th, tw, hp, wp = struct.unpack('HHHH', fcntl.ioctl(0, termios.TIOCGWINSZ, struct.pack('HHHH', 0, 0, 0, 0))) return tw, th print('Number of columns and Rows: ',terminal_size())

Number of columns and Rows: (110, 21)

Explanation:

The above Python code defines a function terminal_size() that uses system calls to get the size of the terminal window in columns and rows. It then calls the terminal_size() function and prints the result to the console output.

Then the code imports fcntl, termios, and struct modules.

fcntl — This module performs file control and I/O control on file descriptors. It is an interface to the fcntl() and ioctl() Unix routines.

termios — This module provides an interface to the POSIX calls for tty I/O control. For a complete description of these calls, see termios(3) Unix manual page.

struct — This module converts between Python values and C structs represented as Python bytes objects. Compact format strings describe the intended conversions to/from Python values.

The terminal_size() function uses the fcntl.ioctl() function to query the size of the terminal window using the termios.TIOCGWINSZ ioctl call. This call returns a struct.pack() object containing four integers representing the number of rows and columns of the terminal, as well as the horizontal and vertical pixel size.

The struct.unpack() function is used to unpack the four integers from the struct.pack() object into separate variables th, tw, hp, and wp. The function then returns the values of tw (the width of the terminal window in columns) and th (the height of the terminal window in rows) as a tuple.

Finally, the print() function is used to print the size of the terminal window to the console.

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