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To test element-wise for NaN, use the numpy.isnan() method in Python Numpy. Returns True where x is NaN, false otherwise. This is a scalar if x is a scalar. The condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain its original value. Note that if an uninitialized out array is created via the default out=None, locations within it where the condition is False will remain uninitialized.NumPy uses the IEEE Standard for Binary Floating-Point for Arithmetic (IEEE 754). This means that ... Read More
To test array values for infiniteness, use the numpy.isinf() method in Python Numpy. The new location where we will store the result is a new array. Returns a boolean array of the same shape as x, True where x == +/-inf, otherwise False.NumPy uses the IEEE Standard for Binary Floating-Point for Arithmetic (IEEE 754). Errors result if the second argument is supplied when the first argument is a scalar, or if the first and second arguments have different shapes.StepsAt first, import the required library −import numpy as npCreate an array with some inf values −arr = np.array([1, 2, 10, 50, ... Read More
To test array for positive or negative infinity, use the numpy.isinf() method in Python Numpy. Returns a boolean array of the same shape as x, True where x == +/-inf, otherwise False.NumPy uses the IEEE Standard for Binary Floating-Point for Arithmetic (IEEE 754). Errors result if the second argument is supplied when the first argument is a scalar, or if the first and second arguments have different shapes.StepsAt first, import the required library −import numpy as npCreate an array with some inf values −arr = np.array([1, 2, 10, 50, -np.inf, 0., np.inf]) Display the arrays −print("Array...", arr)Get the type of ... Read More
To return the x1 * 2**x2, element-wise, use the numpy.ldexp() method in Python Numpy. The 1st parameter X1 is the array of multipliers. The 2nd parameter X2 is the array of twos exponents. If x1.shape != x2.shape, they must be broadcastable to a common shape (which becomes the shape of the output).The out is a location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshly-allocated array is returned. A tuple (possible only as a keyword argument) must have length equal to the number of ... Read More
To extract the fractional and integral parts of a specific array value, use the index value inside the numpy.modf() method. The fractional and integral parts are negative if the given number is negative.The out is a location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshly-allocated array is returned. A tuple (possible only as a keyword argument) must have length equal to the number of outputs.The condition is broadcast over the input. At locations where the condition is True, the out array will be ... Read More
PayPal is considered to be one of the pioneers of online payment. It is one of the most secure ways to send and receive money on the Internet. PayPal has established itself as the best alternative to more traditional, paper-based money transfer methods (checks and money orders). It's simple to use, can be installed on any platform or operating system, and has global coverage, not to mention being firmly ingrained in the freelancing sector. Even though PayPal boasts its security measures, scammers always find a way to fraud people and make money.What is PayPal?PayPal is an American multinational financial technology ... Read More
What is Phishing?This is most likely the approach used by hackers. It entails sending phishing emails to consumers that direct them to a bogus website that appears like their bank's. Fake fan pages that broadcast false content and solicit private information from individuals may also arise on Facebook.Phishing fraudsters commonly employ bogus campaigns to update client data or to entice customers to enter a contest that the bank claims to be running. Fraudulent websites ask for personal information such as IDs, online banking passwords, credit card details, and even the security code in order to make online purchases without the ... Read More
Slow Wi-Fi signals are the present-day nightmare of an average person. The present technological age requires fast Internet. In this post, we shall learn some techniques to boost Wi-Fi signals at homeWhat is Wi-Fi?Wi-Fi is a wireless network protocol based on the IEEE 802.11 family of standards widely used for device networking and Internet access, allowing nearby digital devices to exchange data via radio waves. These are the most commonly used computer networks globally, with wireless access points in public places such as coffee shops, hotels, libraries, and airports providing public Internet access for mobile devices.Why does the Wi-Fi signal ... Read More
Online banking and digital payment technologies have made it easier for businesses and consumers to conduct business with their financial service providers. That same ease and convenience, on the other hand, can make it all too simple to become careless. Hackers usually access sensitive financial information through saved passwords, automated transactions, and passcode-free devices. Now, let us find out how we can protect our financial information from these hackers.Use Secure PasswordsYour passwords must be well protected and strong, most people tend to use the same password for all of their accounts, but it is not advised. Also, do not use ... Read More
The global economy is undergoing a digital revolution as the majority of what we do is now done online, from shopping for groceries to paying payments. Criminals are only natural to follow suit. Criminals see cybercrime as one of the easiest methods to gain money when they evaluate the economics of what they do.Extortion is a simple technique for a hacker to monetise stolen information and it provides the quickest path from crimes to cash. In addition to extortion, criminals can profit through phoney auctions, identity theft, and the sale of stolen information such as credit card numbers, social security ... Read More