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Python DateTime Exercises

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Python Regex Exercises

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Python NumPy - Practice Exercises, Questions, and Solutions

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Python NumPy is a general-purpose array processing package. It provides fast and versatile n-dimensional arrays and tools for working with these arrays. It provides various computing tools such as comprehensive mathematical functions, random number generator and it's easy to use syntax makes it highly accessible and productive for programmers from any background.

Python NumPy - Practice Exercises, Questions, and Solutions

This NumPy exercise will help the learners to get a better understanding of NumPy arrays. This practice page consists of a huge set of NumPy programs like NumPy array, Matrix, handling indexing in NumPy, working with Mathematics. Statistics and all sort of frequently encountered problems.

Questions on NumPy Array

How to create an empty and a full NumPy array?
Create a Numpy array filled with all zeros
Create a Numpy array filled with all ones
Check whether a Numpy array contains a specified row
How to Remove rows in Numpy array that contains non-numeric values?
Remove single-dimensional entries from the shape of an array
Find the number of occurrences of a sequence in a NumPy array
Find the most frequent value in a NumPy array
Combining a one and a two-dimensional NumPy Array
How to build an array of all combinations of two NumPy arrays?
How to add a border around a NumPy array?
How to compare two NumPy arrays?
How to check whether specified values are present in NumPy array?
How to get all 2D diagonals of a 3D NumPy array?
Flatten a Matrix in Python using NumPy
Flatten a 2d numpy array into 1d array
Move axes of an array to new positions
Interchange two axes of an array
NumPy – Fibonacci Series using Binet Formula
Counts the number of non-zero values in the array
Count the number of elements along a given axis
Trim the leading and/or trailing zeros from a 1-D array
Change data type of given numpy array
Reverse a numpy array
How to make a NumPy array read-only?

Questions on NumPy Matrix

Get the maximum value from given matrix
Get the minimum value from given matrix
Find the number of rows and columns of a given matrix using NumPy
Select the elements from a given matrix
Find the sum of values in a matrix
Calculate the sum of the diagonal elements of a NumPy array
Adding and Subtracting Matrices in Python
Ways to add row/columns in numpy array
Matrix Multiplication in NumPy
Get the eigen values of a matrix
How to Calculate the determinant of a matrix using NumPy?
How to inverse a matrix using NumPy
How to count the frequency of unique values in NumPy array?
Multiply matrices of complex numbers using NumPy in Python
Compute the outer product of two given vectors using NumPy in Python
Calculate inner, outer, and cross products of matrices and vectors using NumPy
Compute the covariance matrix of two given NumPy arrays
Convert covariance matrix to correlation matrix using Python
Compute the Kronecker product of two mulitdimension NumPy arrays
Convert the matrix into a list

Questions on NumPy Indexing

Replace NumPy array elements that doesn’t satisfy the given condition
Return the indices of elements where the given condition is satisfied
Replace NaN values with average of columns
Replace negative value with zero in numpy array
How to get values of an NumPy array at certain index positions?
Find indices of elements equal to zero in a NumPy array
How to Remove columns in Numpy array that contains non-numeric values?
How to access different rows of a multidimensional NumPy array?
Get row numbers of NumPy array having element larger than X
Get filled the diagonals of NumPy array
Check elements present in the NumPy array
Combined array index by index

Questions on NumPy Linear Algebra

Find a matrix or vector norm using NumPy
Calculate the QR decomposition of a given matrix using NumPy
Compute the condition number of a given matrix using NumPy
Compute the eigenvalues and right eigenvectors of a given square array using NumPy?
Calculate the Euclidean distance using NumPy

Questions on NumPy Random

Create a Numpy array with random values
How to choose elements from the list with different probability using NumPy?
How to get weighted random choice in Python?
Generate Random Numbers From The Uniform Distribution using NumPy
Get Random Elements form geometric distribution
Get Random elements from Laplace distribution
Return a Matrix of random values from a uniform distribution
Return a Matrix of random values from a Gaussian distribution

Questions on NumPy Sorting and Searching

How to get the indices of the sorted array using NumPy in Python?
Finding the k smallest values of a NumPy array
How to get the n-largest values of an array using NumPy?
Sort the values in a matrix
Filter out integers from float numpy array
Find the indices into a sorted array

Questions on NumPy Mathematics

How to get element-wise true division of an array using Numpy?
How to calculate the element-wise absolute value of NumPy array?
Compute the negative of the NumPy array
Multiply 2d numpy array corresponding to 1d array
Computes the inner product of two arrays
Compute the nth percentile of the NumPy array
Calculate the n-th order discrete difference along the given axis
Calculate the sum of all columns in a 2D NumPy array
Calculate average values of two given NumPy arrays
How to compute numerical negative value for all elements in a given NumPy array?
How to get the floor, ceiling and truncated values of the elements of a numpy array?
How to round elements of the NumPy array to the nearest integer?
Find the round off the values of the given matrix
Determine the positive square-root of an array
Evaluate Einstein’s summation convention of two multidimensional NumPy arrays

Questions on NumPy Statistics

Compute the median of the flattened NumPy array
Find Mean of a List of Numpy Array
Calculate the mean of array ignoring the NaN value
Get the mean value from given matrix
Compute the variance of the NumPy array
Compute the standard deviation of the NumPy array
Compute pearson product-moment correlation coefficients of two given NumPy arrays
Calculate the mean across dimension in a 2D NumPy array
Calculate the average, variance and standard deviation in Python using NumPy
Describe a NumPy Array in Python

Questions on Polynomial

Define a polynomial function
How to add one polynomial to another using NumPy in Python?
How to subtract one polynomial to another using NumPy in Python?
How to multiply a polynomial to another using NumPy in Python?
How to divide a polynomial to another using NumPy in Python?
Find the roots of the polynomials using NumPy
Evaluate a 2-D polynomial series on the Cartesian product
Evaluate a 3-D polynomial series on the Cartesian product

Questions on NumPy Strings

Repeat all the elements of a NumPy array of strings
How to split the element of a given NumPy array with spaces?
How to insert a space between characters of all the elements of a given NumPy array?
Find the length of each string element in the Numpy array
Swap the case of an array of string
Change the case to uppercase of elements of an array
Change the case to lowercase of elements of an array
Join String by a separator
Check if two same shaped string arrayss one by one
Count the number of substrings in an array
Find the lowest index of the substring in an array
Get the boolean array when values end with a particular character