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Commonly used Python libraries are: 👉🏻NumPy: This library is used for scientific computing and working with arrays of data. It provides functions for working with arrays of data, including mathematical operations, linear algebra, and random number generation. 👉🏻Pandas: This library is used for data manipulation and analysis. It provides tools for importing, cleaning, and transforming data, as well as tools for working with time series data and performing statistical analysis. 👉🏻Matplotlib: This library is used for data visualization. It provides functions for creating a wide range of plots, including scatter plots, line plots, bar plots, and histograms. 👉🏻Scikit-learn: This library is used for machine learning. It provides a range of algorithms for classification, regression, clustering, and dimensionality reduction, as well as tools for model evaluation and selection. 👉🏻TensorFlow: This library is used for deep learning. It provides a range of tools and libraries for building and training neural networks, including support for distributed training and hardware acceleration. Share and Support

common techniques for using the type() function in Python: Get the type of an object: my_object = "Hello, world!" my_type = type(my_object) Check if an object is of a given type: my_object = "Hello, world!" if type(my_object) == str: print("my_object is a string.") Create a new object of a given type: my_type = int my_object = my_type("1") Use the type of an object as a dictionary key: my_object = "Hello, world!" my_type = type(my_object) my_dict = {} my_dict[my_type] = my_object Use the type of an object as a set element: my_object = "Hello, world!" my_type = type(my_object) my_set = set() my_set.add(my_type) The type() function is a built-in function in Python that is used to determine the type of an object. It is a useful tool for checking the type of an object, creating objects of a specific type, and using the type of an object as a key in a dictionary or set. Share and Support @Python_Codes

NumPy tricks for beginners : 👉 Reshaping arrays: NumPy provides the np.reshape() function, which allows you to change the shape of an array while preserving its data. This can be useful for converting between different data formats, such as converting a one-dimensional array into a two-dimensional matrix. For example, the following code reshapes a one-dimensional array into a two-dimensional matrix with two rows and three columns: import numpy as np # Create a one-dimensional NumPy array x = np.array([1, 2, 3, 4, 5, 6]) # Reshape the array into a two-dimensional matrix with 2 rows and 3 columns x_matrix = np.reshape(x, (2, 3)) # Print the resulting matrix print(x_matrix) output: [[1 2 3] [4 5 6]] 👉Stacking arrays: NumPy provides the np.vstack() and np.hstack() functions, which allow you to stack arrays vertically or horizontally. This can be useful for combining multiple arrays into a single array, or for splitting a single array into multiple arrays. For example, the following code stacks two one-dimensional arrays vertically to create a two-dimensional matrix: import numpy as np # Create two one-dimensional NumPy arrays x = np.array([1, 2, 3]) y = np.array([4, 5, 6]) # Stack the arrays vertically to create a two-dimensional matrix z = np.vstack((x, y)) # Print the resulting matrix print(z) output: [[1 2 3] [4 5 6]] 👉Broadcasting: NumPy allows you to perform mathematical operations on arrays with different shapes, using a technique called broadcasting. This allows you to perform operations on arrays of different sizes, as long as their shapes are compatible. For example, the following code adds a scalar value to each element of a two-dimensional array: import numpy as np # Create a two-dimensional NumPy array x = np.array([[1, 2, 3], [4, 5, 6]]) # Add a scalar value to each element of the array y = x + 10 # Print the resulting array print(y) output: [[11 12 13] [14 15 16]] Share and Support

Basic NumPy for beginners: Creating a NumPy array: To create a NumPy array from a list or tuple, you can use the np.array() function. For example, the following code creates a NumPy array from a list of numbers: import numpy as np # Create a NumPy array from a list of numbers numbers = [1, 2, 3, 4, 5] numbers_array = np.array(numbers) # Print the array print(numbers_array) output: [1 2 3 4 5] Basic mathematical operations: NumPy provides functions for performing mathematical operations on arrays, such as addition, subtraction, multiplication, and division. These operations can be performed element-wise, allowing for efficient computation on large datasets. For example, the following code adds two NumPy arrays element-wise: import numpy as np # Create two NumPy arrays x = np.array([1, 2, 3, 4, 5]) y = np.array([6, 7, 8, 9, 10]) # Add the arrays element-wise z = x + y # Print the result print(z) output: [ 7 9 11 13 15] Indexing and slicing: NumPy arrays can be indexed and sliced just like lists. This allows you to access and manipulate specific elements or subarrays within an array. For example, the following code slices a NumPy array to extract the second and third elements: import numpy as np # Create a NumPy array numbers = np.array([1, 2, 3, 4, 5]) # Slice the array to extract the second and third elements subarray = numbers[1:3] # Print the result print(subarray) output: [2 3] Share and Support @Python_Codes

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