Category: Python Answers

Sometimes, we want to save a Python interactive session.

In this article, we’ll look at how to save a Python interactive session.

How to save a Python interactive session?

To save a Python interactive session, we can use the readline module.

For instance, we write

import readline

readline.write_history_file('/home/ahj/history')

to call readline.write_history_file to save the interactive session content into the /home/ahj/history file.

Conclusion

To save a Python interactive session, we can use the readline module.

Sometimes, we want to automatically create requirements.txt with Python.

In this article, we’ll look at how to automatically create requirements.txt with Python.

How to automatically create requirements.txt with Python?

To automatically create requirements.txt with Python, we can use the pipreqs package.

To install it, we run

pip install pipreqs

Then we create the requirements.txt file for a project with

pipreqs /path/to/project

pipreqs only saves the dependencies required by the project.

Conclusion

To automatically create requirements.txt with Python, we can use the pipreqs package.

Sometimes, we want to draw a rectangle with Pygame.

In this article, we’ll look at how to draw a rectangle with Pygame.

How to draw a rectangle with Pygame?

To draw a rectangle with Pygame, we can use the draw.rect method.

For instance, we write

import pygame, sys
from pygame.locals import *


def main():
    pygame.init()

    DISPLAY = pygame.display.set_mode((500, 400), 0, 32)

    WHITE = (255, 255, 255)
    BLUE = (0, 0, 255)

    DISPLAY.fill(WHITE)

    pygame.draw.rect(DISPLAY, BLUE, (200, 150, 100, 50))

    while True:
        for event in pygame.event.get():
            if event.type == QUIT:
                pygame.quit()
                sys.exit()
        pygame.display.update()


main()

to call pygame.draw.rec to draw a rectangle.

We call it with the DISPLAY mode to set the fill to WHITE, BLUE color to set the border to blue, and the coordinates of the left, top, width, and height values in the tuple.

And then we run a while loop to show the rectangle until we quit the game.

Conclusion

To draw a rectangle with Pygame, we can use the draw.rect method.

Sometimes, we want to read a file with a semi colon separator in Python Pandas.

In this article, we’ll look at how to read a file with a semi colon separator in Python Pandas.

How to read a file with a semi colon separator in Python Pandas?

To read a file with a semi colon separator in Python Pandas, we call read_csv with the sep argument set to the separator for the row items.

For instance, we write

data = read_csv(csv_path, sep=';')

to call read_csv with the csv_path to the csv file.

And we set sep to ';' to separate row items by the colon.

Conclusion

To read a file with a semi colon separator in Python Pandas, we call read_csv with the sep argument set to the separator for the row items.

Sometimes, we want to check if a string matches an IP address pattern in Python.

In this article, we’ll look at how to check if a string matches an IP address pattern in Python.

How to check if a string matches an IP address pattern in Python?

To check if a string matches an IP address pattern in Python, we can use the IPy module.

We install it by running

pip install IPy

Then we use

from IPy import IP

IP('127.0.0.1')

to create an IP object with “’127.0.0.1′to check if the‘127.0.0.1’` string is a valid IP address by parsing it as such.

Conclusion

To check if a string matches an IP address pattern in Python, we can use the IPy module.