Python Learning

Python Variables: How to Define/Declare String Variable Types What is a Variable in Python? A Python variable is a reserved memory location to store values. In other words, a variable in a python program gives data to the computer for processing. Python Variable Types Every value in Python has a datatype. Different data types in Python are Numbers, List, Tuple, Strings, Dictionary, etc. Variables in Python can be declared by any name or even alphabets like a, aa, abc, etc. How to Declare and use a Variable Let see an example. We will define variable in Python and declare it as “a” and print it.

1 a=100 
2  print (a)

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📚 9 must-have Python developer tools. 1. PyCharm IDE 2. Jupyter notebook 3. Keras 4. Pip Package 5. Python Anywhere 6. Scikit-Learn 7. Sphinx 8. Selenium 9. Sublime Text

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Polymorphism in python 🕳 This allows us to use a single interface for different data types or classes. We can achieve this through method overriding, where a subclass provides a different implementation for a method defined in its parent class. Let's understand with example -☝️

Abstraction in Python 🎭 Here's an example -------------------☝️ This concept focuses on exposing only essential information to the outside world while hiding implementation details. We use abstract classes and methods to define a common interface. At this point if Abstraction and Encapsulation confuse you! 👇 Abstraction conceals the implementation details, but doesn't hide the data itself. On the other hand, Encapsulation hides the data and restricts unwanted use from external sources.

Encapsulation in Python 🚡 (Here's an example) ---------- ☝️ Encapsulation helps to bundle data and methods inside a class, restricting direct access to certain attributes and methods. We use private attributes/methods (with a _ or __ prefix) to achieve this.