Python Set Python set is an unordered collection of unique items. They are commonly used for computing mathematical operations such as union, intersection, difference, and symmetric difference. The important properties of Python sets are as follows: Sets are unordered – Items stored in a set aren’t kept in any particular order. Set items are unique – Duplicate …
Python List Comprehension A comprehension is a compact way of creating a Python data structure from iterators. With comprehensions, you can combine loops and conditional tests with a less verbose syntax. Comprehension is considered more Pythonic and often useful in a variety of scenarios. What is List Comprehension? List comprehension sounds complex but it really isn’t. List …
Python List Slicing To access a range of items in a list, you need to slice a list. One way to do this is to use the simple slicing operator : With this operator you can specify where to start the slicing, where to end and specify the step. Slicing a List If L is a list, …
Python Nested List A list can contain any sort object, even another list (sublist), which in turn can contain sublists themselves, and so on. This is known as nested list. You can use them to arrange data into hierarchical structures. Create a Nested List A nested list is created by placing a comma-separated sequence of sublists. L = …
Python List A list is a sequence of values (similar to an array in other programming languages but more versatile) The values in a list are called items or sometimes elements. The important properties of Python lists are as follows: Lists are ordered – Lists remember the order of items inserted. Accessed by index – Items in a list can …
Python Comments You can use comments to include non-executable text in your code, as a note or reminder to yourself. Comments are ignored by the Python compiler when your code is compiled. Single-line Comments To write a comment in Python, simply put the hash character # before your comment. Python ignores everything after the # and up to the …
Python Operators Operators are used to perform operations on values and variables. The Python operators are classified into seven different categories: Arithmetic operators Assignment operators Comparison operators Logical operators Identity operators Membership operators Bitwise operators Arithmetic Operators Arithmetic operators are used to perform simple mathematical operations on numeric values (except complex). Operator Meaning Example + Addition …