Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles on Trending Technologies
Technical articles with clear explanations and examples
Consecutive Nth column Difference in Tuple List using Python
When working with lists of tuples, you may need to find the consecutive differences between elements in a specific column. This can be achieved by iterating through the list and using the abs() method to calculate absolute differences. The abs() method returns the absolute (positive) value of a number, while append() adds elements to a list. Example Let's find the consecutive differences in the second column (index 1) of a tuple list ? my_list = [(67, 89, 32), (11, 23, 44), (65, 75, 88)] print("The list is:") print(my_list) print("The value of k has ...
Read MoreHow to use Boto3 to paginate through security configuration present in AWS Glue
In this article, we will see how to paginate through security configuration present in AWS Glue using Boto3. AWS Glue security configurations define encryption settings for data at rest and in transit. Problem Statement Use boto3 library in Python to paginate through security configurations from AWS Glue Data Catalog that are created in your account. Understanding Pagination Parameters The pagination function accepts three optional parameters ? max_items − Total number of records to return. If available records exceed this limit, a NextToken is provided for resuming pagination. page_size ...
Read MoreHow to use Boto3 to paginate through all jobs present in AWS Glue
In this article, we will see how to paginate through all jobs present in AWS Glue using the boto3 library in Python. Problem Statement Use boto3 library in Python to paginate through jobs from AWS Glue Data Catalog that is created in your account. Understanding Pagination Parameters Before implementing the solution, let's understand the key pagination parameters ? max_items − Total number of records to return. If available records exceed this limit, a NextToken is provided for resuming pagination. page_size − Number of items per page during pagination. starting_token − Token from previous response ...
Read MoreHow to use Boto3 to paginate through the job runs of a job present in AWS Glue
In this article, we will see how to paginate through all the job runs of a job present in AWS Glue using the boto3 library. This is useful when dealing with jobs that have many runs and you need to retrieve them efficiently in smaller chunks. Understanding Pagination Parameters The pagination function accepts several optional parameters along with the required JobName: max_items − Total number of records to return. If more records are available, a NextToken will be provided for continuation. page_size − Number of records per page. ...
Read MoreRemove Tuples from the List having every element as None in Python
When working with lists of tuples, you may need to remove tuples where every element is None. This is different from removing tuples that contain any None values. Python provides several approaches to filter out tuples containing only None elements. Using List Comprehension with all() The most efficient approach uses list comprehension with the all() function to check if every element in a tuple is None − my_list = [(2, None, 12), (None, None, None), (23, 64), (121, 13), (None, ), (None, 45, 6)] print("The list is :") print(my_list) my_result = [sub for sub ...
Read MoreHow to use Boto3 to to paginate through all databases present in AWS Glue
In this article, we will see how to paginate through all databases present in AWS Glue using the boto3 library in Python. Problem Statement Use boto3 library in Python to paginate through all databases from AWS Glue Data Catalog that is created in your account. Pagination Parameters The pagination function uses three important parameters: max_items − denotes the total number of records to return. If the number of available records is greater than max_items, then a NextToken will be provided in the response to resume pagination. page_size − denotes the size of each page. ...
Read MoreTrim tuples by N elements in Python
When working with lists of tuples, you might need to remove a specific number of elements from the beginning or end. Python provides several approaches to trim tuples by N elements. Using del Operator The del operator removes elements at a specific index ? my_list = [(1, 2, 11), (99, 76, 34, 89), (3.08, 11.56), ("Hi", "Will"), ("Rob", "Ron")] n = 2 print("Original list:") print(my_list) print(f"Removing element at index {n}") del my_list[n] print("List after deletion:") print(my_list) Original list: [(1, 2, 11), (99, 76, 34, 89), (3.08, 11.56), ('Hi', 'Will'), ('Rob', ...
Read MoreHow to use Boto3 to paginate through all crawlers present in AWS Glue
In this article, we will explore how to use Boto3 to paginate through all AWS Glue crawlers in your account efficiently. Overview AWS Glue crawlers can be numerous in large accounts. Using pagination allows you to retrieve crawler information in manageable chunks, preventing timeouts and memory issues. Parameters The pagination function accepts three key parameters − max_items − Total number of records to return. If more records exist, a NextToken is provided for continuation. page_size − Number of crawlers per page/batch. starting_token − Token from previous response to continue pagination from a specific point. ...
Read MoreChange command Method for Tkinter Button in Python
The Button widget in Tkinter is crucial for handling events and performing operations in GUI applications. Sometimes you need to change what a button does after it's been created and displayed. To change a button's command method after initialization, use the configure() method. This allows you to reassign the button's functionality dynamically during program execution. Syntax button.configure(command=new_function) Example Here's a complete example showing how to change a button's command method ? # Import tkinter library from tkinter import * # Create an instance of tkinter frame win = Tk() ...
Read MoreFind number of times every day occurs in a Year in Python
When working with calendar calculations, you might need to find how many times each day of the week occurs in a given month. This is useful for scheduling, payroll calculations, or planning recurring events. Understanding the Problem In any month, most days occur either 4 or 5 times. For a month with n days starting on a specific day, we need to calculate the frequency of each weekday. Algorithm Approach The solution works by: Starting with a base count of 4 for each day (since 4 × 7 = 28 days) Adding the extra ...
Read More