Category: Python Answers

Sometimes, we want to safely create a nested directory with Python

In this article, we’ll look at how to safely create a nested directory with Python.

How to safely create a nested directory with Python?

To safely create a nested directory with Python, we can use the patlib‘ s mkdir method.

For instance, we write

from pathlib import Path
Path("/foo/bar").mkdir(parents=True, exist_ok=True)

to create a directory in the /foo/bar/ folder by calling mkdir with the parents set to True to create the directory when the parent folder exists.

exist_ok is set to True makes mkdir ignore existing files if they have the same name as the path.

Conclusion

To safely create a nested directory with Python, we can use the patlib‘ s mkdir method.

Sometimes, we want to detect key presses with Python.

In this article, we’ll look at how to detect key presses with Python.

How to detect key presses with Python?

To detect key presses with Python, we can use the keyboard package.

To install it, we run

pip3 install keyboard

Then we can use it by writing

import keyboard  

while True: 
    try:  
        if keyboard.is_pressed('q'):
            print('You Pressed A Key!')
            break
    except:
        break 

to create an infinite while loop to check if the q key is pressed.

If it’s pressed, then we print a message and stop the loop with break.

If there’s an exception raised, we also stop the loop with break.

Conclusion

To detect key presses with Python, we can use the keyboard package.

Sometimes, we want to clear the interpreter console with Python.

In this article, we’ll look at how to clear the interpreter console with Python.

How to clear the interpreter console with Python?

To clear the interpreter console with Python, we can run the command to clear the screen for the operating system.

For instance, we write

import os
clear = lambda: os.system('cls')
clear()

to create the clear function that runs the cls command on Windows with os.system('cls').

Likewise, we can run the clear command to clear the screen on Linux by writing

import os
clear = lambda: os.system('clear')
clear()

Conclusion

To clear the interpreter console with Python, we can run the command to clear the screen for the operating system.

Sometimes, we want to convert all strings in a list to int with Python.

In this article, we’ll look at how to convert all strings in a list to int with Python.

How to convert all strings in a list to int with Python?

To convert all strings in a list to int with Python, we can use the map function.

For instance, we write

results = list(map(int, results))

to map all the values in the results list to ints with int.

And then we convert the map back to a list with list.

Conclusion

To convert all strings in a list to int with Python, we can use the map function.

Sometimes, we want to use glob() to find files recursively with Python.

In this article, we’ll look at how to use glob() to find files recursively with Python.

How to use glob() to find files recursively with Python?

To use glob() to find files recursively with Python, we can use the rglob method.

For instance, we write

from pathlib import Path

for path in Path('src').rglob('*.c'):
    print(path.name)

to call create the Path object and then call rglob to find any files with extension .c in the src folder.

All child directories at all levels will be searched with rglob.

Then the name property has the path name of the file found.

Conclusion

To use glob() to find files recursively with Python, we can use the rglob method.