What is the replace() function of Python datetime? Answer What is the replace() method? The replace() method replaces the attributes of a datetime object. Attributes of a datetime object A datetime object consists of date attributes, time attributes, and attributes related to timezone. Date attributes Day Month Year Time attributes Microsecond…
What is aggregation in Object-Oriented Programming? Answer In this lesson, you’ll get familiar with a new way of linking different classes. We will cover the following: Independent Lifetimes Example Aggregation follows the Has-A model that creates a parent-child relationship between two…
What is Exploratory Data Analysis? Answer Exploratory Data Analysis (EDA) is a way to investigate datasets and find preliminary information, insights, or uncover underlying patterns in the data. Instead of making assumptions, data can be processed in a systematic method to…
How to use the emoji module in Python? Answer Overview An emoji is a pictogram, logogram, ideogram, or smiley embedded in the text and used in electronic messages and web pages. They can represent emotion, weather conditions, hand gestures, people, animals, objects,…
What is the pretty-print module in Python? Answer Overview The pprint module can be used to pretty-print the Python data structures in a readable format. The pprint is a native Python library. We can use the pprint() method or create our pprint object with PrettyPrinter(). Syntax pprint.pprint(object, stream = None, indent = 1, width = 80, depth = None, compact = False, sort_dicts = True, underscore_numbers = False) Parameters The pprint() method…
What is the numpy.trim_zeros() function in Python? Answer Overview The trim_zeros() function in Python is used to trim out the leading zeros from an input 1-D array. Syntax The trim_zeros() function takes the syntax below: Syntax for the trim_zeros() function in Python Parameter values The trim_zeros() function takes the…
What is autocorrelation in Python? Answer Autocorrelation measures a set of current values against a set of past values to see if they correlate. It is heavily used in time series analysis and forecasting. We can calculate the correlation for current…
How to copy a dictionary in Python? Answer Dictionaries are useful data structures frequently used in Python programming. There are several ways to make copies of dictionaries. 1. Use a for loop A for loop can be used to iterate through the original dictionary and…
What is NumberUtils.toFloat() in Java? Answer Overview toFloat() is a static method of the NumberUtils class that is used to convert the given string to a float value. One variant of the method accepts a default value which is returned if the conversion fails. How to import NumberUtils…
What is the OptionalInt.orElse method in Java? Answer In Java, the OptionalInt object is a container object that may or may not contain an integer value. The OptionalInt class is present in the java.util package. The orElse method The orElse method will return the integer value present in the OptionalInt object. If the value is not present, then…
