Tag: Unique
Python : Find unique values in a numpy array with frequency & indices | numpy.unique()
In this article we will discuss how to find unique values / rows / columns in a 1D & 2D Numpy array. Also how to find their index position & frequency count using numpy.unique(). numpy.unique() Python’s numpy module provides a function to find the unique elements in a numpy array i.e. Advertisements numpy.unique(ar, return_index=False, return_inverse=False, return_counts=False, …
Python : Find unique values in a numpy array with frequency & indices | numpy.unique()Read More
Pandas : Get unique values in columns of a Dataframe in Python
In this article we will discuss how to find unique elements in a single, multiple or each column of a dataframe. Series.unique() It returns the a numpy array of unique elements in series object. Advertisements Series.unique(self) Series.nunique() Series.nunique(self, dropna=True) It returns the count of unique elements in the series object. Frequently Asked: Pandas: Select first …
Pandas : Get unique values in columns of a Dataframe in PythonRead More
Javascript: Get unique values in an array
While working in javascript arrays, we often encounter a situation where we need to pull the unique values from an array. This article will see different ways to extract unique values into a separate array using various example illustrations. Table of Contents: Get unique values from an array using filters Get unique values from an …
Count Unique Values in all Columns of Pandas Dataframe
This article will discuss different ways to count unique values in all columns of a dataframe in Pandas. First of all, we will create a sample Dataframe from a list of tuples i.e. import pandas as pd import numpy as np # List of Tuples list_of_tuples = [ (11, 34, 67, 5, np.NaN, 34), (12, …
Count Unique Values in all Columns of Pandas DataframeRead More
Pandas | Count Unique Values in a Column
This article will discuss different ways to Count unique values in a Dataframe Column in Python. First of all, we will create a sample 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, …
Count unique values per group in Pandas
In this article, we will discuss how to count unique values per group in a Pandas DataFrame. We are going to cover multiple approaches to achieve this as listed below. Table of Contents Count unique values per group Using nunique() method Count unique values per group using the aggregate function Count unique values per group …
Get unique values from a List in Python
In this article, we will discuss how to get the unique elements from a list in Python. Table Of Contents Get unique values from a List using for-loop Get unique values from a List using Set Get unique values from a List using NumPy Get unique values from a List using Counter Summary Get unique …
Get List of Unique Dictionaries in Python
This tutorial will discuss about unique ways to get list of unique dictionaries in Python. Suppose we have a list of dictionaries. Like this, # List of Dictionaries dictList = [{‘name’ : ‘Shuan’, ‘Age’ : 35, ‘city’ : ‘London’}, {‘name’ : ‘Vijay’, ‘Age’ : 49, ‘city’ : ‘Mumbai’}, {‘name’ : ‘Shuan’, ‘Age’ : 35, ‘city’ …
Select Rows with unique column values in Pandas
This tutorial will discuss about different ways to select DataFrame rows with unique column values in pandas. Table Of Contents Preparing DatSet Select rows with unique values in a column Select rows with unique values in a column (keep last in duplicates) Select rows with unique values in a column (keep None of the duplicates) …
Check if all elements in a List are unique in Python
This tutorial will discuss about unique ways to check if all elements in a list are unique in Python. Table Of Contents Method 1: Using Set Method 2: Using Dictionary Summary Method 1: Using Set In this solution we are going to use the Set Data Structure of Python. A Set in Python contains only …
Check if all elements in a List are unique in PythonRead More