Tag: N
Pandas: Drop last N columns of dataframe
In this article, we will discuss different ways to delete last N columns of a dataframe in python. Use iloc to drop last N columns of pandas dataframe In Pandas, the Dataframe provides an attribute iloc to select a portion of the dataframe using position based indexing. This selected portion can be a few columns …
Select first N columns of pandas dataframe
In this article, we will discuss different ways to select the first N columns of a dataframe in pandas. Table of Contents Use iloc[] to select first N columns of pandas dataframe. Use [] to select first N columns of pandas dataframe. Use head() to select first N columns of pandas dataframe. There are different …
Pandas: Select last N columns of dataframe
In this article, we will discuss different ways to select the last N columns of a dataframe in pandas. Table of Contents Use iloc[] to select last N columns of pandas dataframe. Use [] to select last N columns of pandas dataframe. Use tail() to select last N columns of pandas dataframe. There are different …
MySQL Select last N rows
This article will be looking into how to SELECT the last ‘n’ records from a MySQL table. We will be going through examples to demonstrate the concept. Let us get started by making the sample data to be used across the examples. Create a table named sales_team_emails, followed by inserting some rows into it. # create the …
Pandas: Get last N rows of dataframe
In this article, we will learn about different ways to get the last N rows of dataframe in pandas. Get last N rows of dataframe in pandas using iloc[] Before jumping into the solution, let’s last have a brief view of the dataframe’s iloc. Overview of dataframe iloc[] Advertisements In Pandas, the dataframe class has …
Pandas: Get first N rows of dataframe
In this article, we will discuss different ways to get the first N rows of dataframe in pandas. Get first N rows of dataframe using iloc[] Before looking into the solution, let’s first have a summarized view of the dataframe’s iloc. Overview of dataframe iloc[] Advertisements In Pandas, the dataframe class has an attribute iloc[] …
Remove last N characters from string in javascript
Many times we come across a requirement to remove the last N characters from a string in javascript. This article will discuss removing a few characters from the string based on the value we pass for N using different examples illustrations. Table of Contents:- Javascript remove last N characters from a string using substring() Javascript …
Remove first N characters from string javascript
Often we come across a requirement to remove the first N characters from a string in javascript. This article will discuss removing N characters from the starting of the string based on the value we pass for N using many examples illustrations. Table of Contents:- Javascript remove first N characters from a string using substring() …
Difference between n and r?
While working with different languages and operating systems, we often encounter general questions on r and n and their difference. In this article, let’s discuss what r and n and nr combined are. Differentiate between r and n and nr n stands for new-line – n will move the cursor down to a new line …
Pandas – Count Values in Column greater than N
This article will discuss different ways to count values in a column, which are greater than a given limit. Let’s first create a Dataframe from a list of tuples i.e. import pandas as pd import numpy as np # List of Tuples list_of_tuples = [ (11, 34, 78, 5, 11, 56), (12, np.NaN, 98, 7, …