A tuple is a collection of python objects that are separated by commas which are ordered and immutable. Tuples are sequences, just like lists. The differences between tuples and lists are, that tuples cannot be changed unlike lists and tuples use parentheses, whereas lists use square brackets. Let us see about the creation of tuples in a detailed way. Empty Tuple Empty tuple means a tuple with no elements. Example Following is a way, to can create an empty tuple. temp=() print(temp) Output The following output is obtained on executing the above program. () Non Empty Tuple It ... Read More

List is one of the frequently used data structures in python. A list is a data structure in python that is mutable and has ordered sequence of elements. Following is a list of integer values Example lis= [5, 10, 15, 20, 25] print(lis) Output If you execute the above snippet, it produces the following output. [5, 10, 15, 20, 25] Let us discuss various ways to split a list into evenly sized chunks in Python. Using slice operator You can print the list of elements with equally sized chunks, and they can be solved simply by using the ... Read More

In this article, we will show you how to get the first 100 characters of a string in python. The following are the 4 different methods to accomplish this task − Using While Loop Using For Loop Using Slicing Using slice() Function Assume we have taken an input string. We will return the first 100 characters of the input string using the above-specified methods. Method 1: Using While Loop Algorithm (Steps) Following are the Algorithm/steps to be followed to perform the desired task − Create a variable to store the input string. Create another variable to store ... Read More

A list is a data structure in Python that is a mutable, or changeable, ordered sequence of elements. A list's items are any elements or values that are contained within it. Lists are defined by having values inside square brackets [], just as strings are defined by characters inside quotations. They are used to store multiple items in a single variable. In Python, strings are among the most widely used types. We can create them simply by enclosing characters in quotes. Python treats single quotes the same as double quotes. Creating strings is as simple as assigning a value to ... Read More

In Python, a list is an ordered sequence that can hold several object types such as integer, character, or float. In other programming languages, a list is equivalent to an array. Square brackets [] are used to denote it, and a comma (, ) is used to divide two items in the list. In this article, we will show you how to get a comma-separated string from a list using python. − Using join() method Using join() & map() Functions Using join() & List comprehension Assume we have taken a list containing some random elements. We will return ... Read More

Python has an in-built join() function that returns a string by joining elements in a sequence object by inserting separator between elements. If we need a string without any separator, we initialize it with null string>>> lst=['h','e','l','l','o'] >>> str='' >>> str.join(lst) 'hello'

A complex number is a pair of real numbers a and b, most often written as a+bi, or a+ib, where i is called the imaginary unit and acts as a label for the second term. Mathematically,  i2 = -1. Sometimes, j is used instead of i.Here’s how a complex number is assigned to a variable:>>> a=5+6j >>> a (5+6j) >>> type(a) Python has a built-in function complex() which returns a complex data type.complex(x) returns a complex number with x as real part and imaginary part as zero. complex(x, y) returns a complex number with x as real part and y ... Read More

Assuming that MySQL database named as test is present on server and a table named employee is also created. The table has five fields fname, lname, age, gender, and salary.A tuple object containing data of a record is defined ast1=('Mac', 'Mohan', 20, 'M', 2000)To establish interface between MySQL  and Python 3, you need to install PyMySQL module. Then you can set up the connection using following statementsimport PyMySQL # Open database connection db = PyMySQL.connect("localhost", "root", "", "test" ) # prepare a cursor object using cursor() method cursor = db.cursor()Next step is to set up the insert query using data ... Read More

PostgreSql database is by default installed on port number 5432. Python interface to PostgreSql is provided by installing psycopg2 module. Assuming that test database and employee table with fname, sname, age, gender and salary fields is available.First establish connection and obtain cursor object by following statements in Python script.import psycopg2 conn = psycopg2.connect(database = "test", user = "postgres", password = "pass123", host = "localhost", port = "5432") cur = conn.cursor()Data to be inserted in employee table is stored in the form of tuple objectt1=('Mac', 'Mohan', 20, 'M', 2000)Next set up the insert query using this tuplesql="insert into employee values(%s, %s, ... Read More

A Tuple can be used within a Tuple easily. Any item of a Tuple can be a Tuple. Tuples are sequences i.e. a collection of objects which ordered and immutable. To access the Tuple within a Tuple, use the square brackets and the index number of that specific inner Tuple. A tuple is a sequence of immutable Python objects. Tuples are sequences, just like lists. The main difference between the tuples and the lists is that the tuples cannot be changed unlike lists. Tuples use parentheses, whereas lists use square brackets. Create a basic Tuple Let us first create a ... Read More