How-to articles, tricks, and solutions about LIST

List comprehension and the combination of lambda functions and the filter() function in Python are both used to filter a list and return a new list with only the elements that satisfy a certain condition.

In Python, when you create a list of lists and modify one of the sublists, the change is reflected in all other sublists as well because they are all pointing to the same object in memory.

You can use the len() function to count the number of elements in a list.

This error message is indicating that you are trying to iterate over an object of type 'int', which is not iterable (i.e.

Here is a code snippet that demonstrates how to find an element in a list in Python:

To find an element in a list, you can use the in keyword.

This code uses a list comprehension to iterate through the original list and only keep the elements that are not empty strings.

There are a few ways to remove duplicates from a list in Python.

The random module in Python provides a function called shuffle() which can be used to shuffle the elements of a list.

The "stale element reference" error in Selenium WebDriver occurs when an element that was previously found on the webpage is no longer attached to the DOM (Document Object Model) and is therefore no longer accessible through the browser.

Here is a code snippet that demonstrates how to sum a list of numbers in Python:

In Java, List is an interface that defines a list data structure, while ArrayList is a class that implements the List interface.

This error is usually caused when you try to access an element in a list using a string as the index, rather than an integer.

The append method adds an item to the end of a list.

In Java, a Set is an interface that extends the Collection interface.

Lists and tuples are both used to store multiple items in a single variable, but they are different in a few key ways.

The java.lang.UnsupportedOperationException is thrown when an operation is not supported by a class.

The join() method is a string method, so it is called on a string object and takes a list of strings as its argument.

Here is a code snippet that demonstrates how to write a list to a file with newlines in Python: