Skip to main content

Variable Declaration in Python

                                 Variables

Variables is a container which stores the values in it. Every values in Python has a datatype. Datatypes in Python are numbers, list, tuple, strings, dictionary etc.



Rules for Python Variables

  • A Variable name can contain alpha-numeric characters and underscores (A - Z , a - z, _).
  • A Variable name can start with number or underscore character, but can' t start with a number.
  • Variable name should not be keywords. Keywords are some specific names that are used in Python for some specific function.
  • Variable names in Python are case sensitive. (Height, height, HEIGHT are different).


Variable Declaration


Here we didn't defined data type , as we know Python is dynamically typed so not required to define explicitly.

    Multiple Variable Declaration

        

We can declare multiple variables in a single statements. And you can initialize multiple variables with
the same value.  




Learn Data Science Material which helps to learn concepts in Python, Statistics , Data Visualization, Machine Learning , Deep Learning. And it contains Projects helps to understand the flow of building model , and what are the necessary steps should be taken depending on the data set. Interview Questions helps to crack the interview. 





Learn Python from basics to advanced. 



Join ML in python channel in telegram , Where you can learn every concepts in Python, Statistics, Data Visualization, Machine Learning, Deep Learning.

  

Join Aptitude Preparation channel in telegram , this channel helps to crack any interview.

Comments

Popular posts from this blog

Practice Problems in Python [ Part - 1 ]

                                            Python 1. Write a program which will find all such numbers which are divisible by 3 but are not a multiple of 7,between 2000 and 3200 (both included). soln :            def filter_numbers():           """           function to filter out numbers by extracting numbers           which is divisible by 3 but not multiple of 7.           """           filtered_list=[]           for i in range(2000, 3201):               if (i%3==0) and (i%7!=0):                   filtered_list.append(str(i))    ...

Python Introduction

 Introduction  Python is developed by Guido Van Rossum and released in 1991. Python is high level, interpreted, general purpose programming language. It is one of the top five most used languages in the world. Currently there are 8.2 million developers who code in Python. Python is one of the most preferred languages in the field of Data Science and Artificial Intelligence. Key Features Python is an interpreted language, unlike compiled languages like Java, C, C++, C#, Go etc., Python codes are executed directly even before compiling.  Python is Dynamically typed, no need to mention type of variable before assigning. Python handles it without raising any error. Python codes can be executed on different software or operating systems without changing it. Python supports both Functional and Object oriented programming as it supports creating classes and objects. Python has high number of modules and frameworks support. Python is free and Open Source, which means it is availa...

Types of Machine Learning

                                   Machine Learning  Machine Learning is an application of artificial intelligence where a computer/machine learns from the past experiences (input data) and makes future predictions. It finds the pattern in the data , based on the pattern it gives the future predictions from the unseen data.   It is a way to understand the data and find the patterns in that. Types of Machine Learning        Supervised Machine Learning An algorithm learns from example data and associated target responses that can consist of numeric values or string labels.  Generally the algorithm should find the pattern how input and output is mapped           Two types of Supervised Learning: Regression:  The problem is regression type when the output variable is real or continuous. Example :  Predicting salar...