Author: John Au-Yeung

Sometimes, we want to get the intersection of multiple lists with Python.

In this article, we’ll look at how to get the intersection of multiple lists with Python.

How to get the intersection of multiple lists with Python?

To get the intersection of multiple lists with Python, we call set.intersection.

For instance, we write

intersection = set.intersection(*map(set, d))

to call set.intersection with arguments being the sets that we get from

*map(set, d)

We call map with set and list d to convert the lists in list d to sets.

Then we use * to expand the iterator with sets as arguments of intersection.

Conclusion

To get the intersection of multiple lists with Python, we call set.intersection.

Sometimes, we want to play mp3 song on Python.

In this article, we’ll look at how to play mp3 song on Python.

How to play mp3 song on Python?

To play mp3 song on Python, we can use the vlc module.

We install it by running

pip install python-vlc

Then we use it by writing

import vlc

p = vlc.MediaPlayer("file:///path/to/track.mp3")
p.play()

to create the MediaPlayer media object with the mp3 file path to open the mp3 file.

Then we call play to play it.

Conclusion

To play mp3 song on Python, we can use the vlc module.

Sometimes, we want to get the input from the Tkinter Text Widget with Python.

In this article, we’ll look at how to get the input from the Tkinter Text Widget with Python.

How to get the input from the Tkinter Text Widget with Python?

To get the input from the Tkinter Text Widget with Python, we can use the get method.

For instance, we write

def retrieve_input():
    input = self.myText_Box.get("1.0", END)

to call the myText_Box.get method with '1.0' and END to get the input value from the myText_Box text box.

'1.0 means the input should be read from line 1 character 0.

And END is a tkinter constant that makes tkinter read the input until the end of the text box is reached.

Conclusion

To get the input from the Tkinter Text Widget with Python, we can use the get method.

Sometimes, we want to click on a button with Python Selenium.

In this article, we’ll look at how to click on a button with Python Selenium.

How to click on a button with Python Selenium?

To click on a button with Python Selenium, we can use the click method on the returned element.

For instance, we write

from selenium.webdriver import ActionChains

ActionChains(browser).click(element).perform()

to create an ActionChains object with the browser object.

Then we call click with the button element.

And then we call perform to do the click on element.

Conclusion

To click on a button with Python Selenium, we can use the click method on the returned element.

Sometimes, we want to reset a generator object in Python.

In this article, we’ll look at how to reset a generator object in Python.

How to reset a generator object in Python?

To reset a generator object in Python, we can use the itertools.tee method.

For instance, we write

import itertools

y = gen()
y, y_backup = itertools.tee(y)
for x in y:
    print(x)
for x in y_backup:
    print(x)

to call itertools.tee with generator y to get a 2nd version of the generator.

Then we get the original value returned from the y_backup generator object.

Conclusion

To reset a generator object in Python, we can use the itertools.tee method.