How to Count Unique Values in a Column in The Pandas DataFrame in 2025?

How to Count unique values in a column in the pandas dataframe

In the present post, we’ll figure out how to count and include distinct occurrences in columns of a Pandas DataFrame. When dealing with machine learning and artificial intelligence or data analysis with pandas we are frequently expected to get the count of unique or distinct values from a solitary column or numerous columns. You can … Read more

Fix – ‘Vue-CLI-Service’ is not recognized as an internal or external command

Vue-CLI-Service

A few users are recently reporting that they are facing an error while trying to run the Vue-cli-service serve. During the execution, the error popped up with a message: ‘vue-cli-service’ is not recognized as an internal or external command in VueJs. In VueJS, the ‘vue-cli-service’ isn’t perceived as an internal or external command is a typical error, and … Read more

[Latest] How to Install Kali Linux Nethunter on Android – Quick Step by Step Guide in 2025

Install Kali Nethunter on Android

Is it true that you are searching for a method to install Kali Linux Nethunter on android gadgets? You just came to the right page that will exhibit the way how to introduce Kali Linux’s Nethunter adaptation uniquely intended for Android. The vast majority of individuals experiencing difficulty installing Kali Linux Nethunter. To determine this … Read more

[Solved] How to Solve Python picamera and raspistill error

[Solved] How to Solve Python picamera and raspistill error

3. After turning on all the options and restarting raspberry pie 4.vcgencmd get_camera 5. You can run the python picamera program and  execute raspistill For example raspistill -o /home/pi/Desktop/first.jpg So, you’ve embarked on the Raspberry Pi journey and hit a snag with Python picamera and raspistill errors? Fear not, dear Pi-enthusiast! You’re not alone in … Read more

[SOLVED] How to Fix “cv2.error: OpenCV(4.5.2) XXXshapedescr.cpp:315

How to Fix "cv2.error: OpenCV(4.5.1) XXX\shapedescr.cpp:315: Best Guide

cv2.error: OpenCV(4.5.2): Working with OpenCV can sometimes feel like wrestling with a stubborn octopus—an octopus that occasionally throws obscure error messages your way. One of these pesky errors is the infamous “cv2.error: OpenCV(4.5.2) XXXshapedescr.cpp:315: error: (-215:Assertion failed) npoints ≥ 0“. If this error has left you scratching your head, you’ve come to the right place. … Read more