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The Quick and Easy Way to Analyze Numpy Arrays

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The quickest and easiest way to analyze NumPy arrays is by using the numpy.array() method. This method allows you to quickly and easily analyze the values contained in a numpy array. This method can also be used to find the sum, mean, standard deviation, max, min, and other useful analysis of the value contained within a numpy array. Sum You can find the sum of Numpy arrays using the np.sum() function.  For example:  import numpy as np  a = np.array([1,2,3,4,5])  b = np.array([6,7,8,9,10])  result = np.sum([a,b])  print(result)  # Output will be 55 Mean You can find the mean of a Numpy array using the np.mean() function. This function takes in an array as an argument and returns the mean of all the values in the array.  For example, the mean of a Numpy array of [1,2,3,4,5] would be  result = np.mean([1,2,3,4,5])  print(result)  #Output: 3.0 Standard Deviation To find the standard deviation of a Numpy array, you can use the NumPy std() function. This function takes in an array as a par
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Python: Here are 3 Brilliant Methods to Execute

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You can run python commands in three methods. Those are at CLI, Python interface, and as a Script. How to Run Script at CLI? The script extension should be .py. Here is an example xyz.py. When the script is ready, the next step is to run it. How to run it from CLI?  Here is a command to run at CLI. Suppose you have installed Python in Linux OS. Then you need to give: $ python -m xyz.py Here, m means module. That means you are running a script with Python code. How to Run Commands at Script? The Other way, you can execute Python statements directly at CLI. Here's a command for your quick reference. $ python -c "print('Hello world')" Here, the print statement displays " Hello World " on the screen. How to Run commands at Python Interface? You know that the Python interface needs an operating system - Windows or Linux.  $ Python3 >>> 10 + 20 30 References Python Programming: Using Problem Solving Approach
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Hadoop fs (File System) Commands List

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Hadoop HDSF File system commands given in this post. These are useful for your projects and interviews. HDFS commands HDFS File System Commands. Hadoop fs -cmd <args> cmd is a specific command and arg is the variable name.  The List of Commands cat  Hadoop fs –cat FILE [FILE …]  Displays the files' content. For reading compressed files.  chgrp  Hadoop fs –chgrp [-R] GROUP PATH [PATH …]  Changes the group association for files and directories. The – R option applies the change recursively.  The user must be the files' owner or a superuser.  chmod  Hadoop fs –chmod [-R] MODE[,MODE …] PATH [PATH …]  Changes the permissions of files and directories. Like, its Unix equivalent, MODE can be a 3-digit octal mode, or {augo}+/-{rwxX}. The -R option applies the change recursively. The user must be the files' owner or a superuser.  chown  Hadoop fs –chown [-R] [OWNER][:[GROUP]] PATH [PATH…]  Changes the ownership of files and directories. The –R option applies the change recursiv
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vi Editor Top Commands for Ubuntu OS

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I have given VI editor commands to use in Ubuntu operating system. You can practice using them for your benefit and you can complete your work quickly. To begin changing or adding to text with vi, you can enter Insert or Replace modes, as shown in the following list. When you enter Insert or Replace mode, the characters you type will appear in the text document (as opposed to being interpreted as commands).  vi filename This is the first command to enter into editor mode. Once you enter into editor mode, you need to enter other commands to complete your editing work. Press the Esc key t o exit to Normal mode after you are done inserting or replacing text. List of VI Editor Commands.. i—Typed text appears before current character. a—Typed text appears after current character. o—Open a new line below current line to begin typing. s—Erase current character and replace with new text. c?—Replace ? with l, w, $, or c to change the current letter, word, end of line, or line. r—Repla
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