Artturi Jalli

To convert a space-separated string to a list in Python, call the str.split() method: Output: This works because the str.split() splits the string by blank spaces by default. Let’s then take a look at how to split a string of integers into a list of integers. How Does the split() Method Work? In Python, you […]

To convert comma-delimited string to a list in Python, split the string with the str.split() method. For example: Output: This results in a list of the parts of the strings that were separated by commas. Don’t Forget to Handle Empty Strings Using the above approach on an empty string returns a list with one empty

To find the combinations of length r in a Python list, use itertools.combinations() method: To find all the combinations of a Python list, also known as a powerset, follow these steps: Here is how it looks in the code: Output: How to Get All Combinations of Unique Elements in Python So you want no duplicate

The key difference between a function and a method in Python is: A function is implemented outside of a class. It does not belong to an object. A method is implemented inside of a class. It belongs to an object. Calling a function on an object looks like this: And calling a method of an

In Python, the finally statement is helpful with error handling to ensure code executes. For example, here the something_else() call does not run because it is not in an finally block: But by placing it inside a finally block, it gets executed no matter what: This is a comprehensive guide to the finally statement in

The Python reduce() function works such that it: Applies a function to the first and the second element of an iterable. Stores the result. Applies the function to the third element and the result. Continues this process until no values left. In other words, the reduce() reduces an iterable into a single cumulative value. For

To find the largest number in a list in Python: Here is how it looks in code: Output: This is the naive implementation of finding the largest number. But there are also some useful built-in mechanisms you can use. In this guide, you learn different ways to find the maximum value in a list in

To find the average of a list in Python: Sum up the elements of a list. Divide the sum by the length of the list. For instance, let’s calculate an average of a list of numbers: Output: This is a comprehensive guide to calculating the average of a list in Python. In this guide, you

To find a word in a file using Python: For example, let’s check where (if any) the word “test” is in a file called “example.txt”. In my case, the word is found in the second line. So the output is: (The enumerate(file, start=1) matches each line with an index. Line 1 has an index of