Summary PYTHON CONCEPTS

Learn Python Important Concepts Simplified [ Intermediate Python ] Bek Brace 8 Important Concepts and Language Features in Python In this short video, we will discuss eight important concepts and language features in Python that are essential to know. References When you assign a variable to another variable, you are creating a reference in the computer's memory and storing it in the variable. Changing the value of a variable is actually making it refer to a completely different value in memory. Immutable values like integers do not change, but mutable data types like lists can be altered. To change a value inside a list, you can simply assign a new value to a specific index. Functions To define a function, you need to use the def keyword. You can then use the function by invoking it with arguments. You can also define anonymous functions or lambda expressions using the lambda keyword. However, you cannot use them directly without giving them a name. Iterators and Generators Iterators are objects used to iterate over iterable objects like lists, tuples, dictionaries, and sets. The __next__() method is used to return the next value in the iterable. Generators are functions that return iterators and are used to create a new collection of data. The Yield Keyword The yield keyword is used in Python to create generator functions. It is used in the context of a function that takes input or data, processes it and returns a new collection of data. When the yield keyword is encountered, it returns a value and pauses the function's execution. The next time the function is called, it resumes from where it left off.