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class ShellApplication: def __init__(self): # From here we are taking the data from user and based on the command given we are calling functions while True: print "----------------------------------" print "1-Command\n2-stop" ch = input() if ch == 1: print "Enter command:" command = raw_input().split(" ") print "*****************************" if command[0] == "echo": # If first word is echo then we are calling display_text function self.display_text(command) elif command[0] == "average": # If first word is average then we are calling print_average function self.print_average(command) elif command[0] == "strstr": # If first word is strstr then we are calling find_index self.find_index(command) elif command[0] == "script": # If first word is script then we are calling read_from_file function self.read_from_file(command) else: print "Invalid Command" elif ch == 2: break else: print "Choose correctly" @staticmethod def display_text(commands): # Here we are joining the text given and printing it text = ' '.join(commands[1:]) print text @staticmethod def print_average(commands): # Here we are converting the given string to float if any error occurs displaying the text else printing avg try: count = 0 sum = 0 for num in commands[1:]: sum += float(num) count += 1 print sum / count except: print "ERROR: usage: average <number> <number> .. <number>" @staticmethod def find_index(commands): # This function will find str2 in str1 if len(commands[1:]) == 2: # If length is 2 then we will find the str2 in str1 else we will show the error message find_str = commands[2].replace("\n", "") # First here we are checking whether str2 is in str1 or not if it is there then we are printing index if find_str in commands[1]: print commands[1].index(find_str) else: print "String is not found!!" else: print "ERROR: usage: strstr <arg0> <arg1>" def read_from_file(self, commands): # Here we are reading the text from file line by line and we are processing that based on the given text file_name = commands[1].replace("\n", "") with open(file_name) as fd: content = fd.readlines() for line in content: split_line = line.split(' ') if split_line[0] == "echo": # If first word is echo then we are calling display_text function self.display_text(split_line) elif split_line[0] == "average": # If first word is average then we are calling print_average function self.print_average(split_line) elif split_line[0] == "strstr": # If first word is strstr then we are calling find_index self.find_index(split_line) elif split_line[0] == "script": # If first word is script then we are calling read_from_file function self.read_from_file(split_line) else: print "Invalid Command Line Arguments" obj = ShellApplication()
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PYTHON 4. While Loops (25%) You will be writing a "shell" application, it will be on...
I need python help .. I need to know if a user were to input 3 commands to a program and run it such as specify: Usage: ./filemaker INPUTCOMMANDFILE OUTPUTFILE RECORDCOUNT (./filemaker is the program)( (INPUTCOOMANDFUILE= a text file that contains key words that need to be searched through then decided what to do ) (RECORDCOUNT= number) Given an input file that contains the following: That specifies the text, then the output, and the number of times to be repeated...
Hello, please help with the following, you're tasked with writing a shell script named “rpsm.sh”. The script reports and prints (to stdout) selected storage management information. Think of it as “RePort Storage Management”. The easy way to describe what the script needs to do is to look at what it should display in the case where you provide incorrect parameters, or in the case where you provide “-h” for help: Usage: ./rpsm.sh <options>< directory> Reports selected information about specified directory...
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. . In this programming assignment, you need to write a CH+ program that serves as a very basic word processor. The program should read lines from a file, perform some transformations, and generate formatted output on the screen. For this assignment, use the following definitions: A "word" is a sequence of non-whitespace characters. An "empty line" is a line with no characters in it at all. A "blank line" is a line containing only one or more whitespace characters....
python 2..fundamentals of python 1.Package Newton’s method for approximating square roots (Case Study 3.6) in a function named newton. This function expects the input number as an argument and returns the estimate of its square root. The script should also include a main function that allows the user to compute square roots of inputs until she presses the enter/return key. 2.Convert Newton’s method for approximating square roots in Project 1 to a recursive function named newton. (Hint: The estimate of...
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You need not run Python programs on a computer in solving the following problems. Place your answers into separate "text" files using the names indicated on each problem. Please create your text files using the same text editor that you use for your .py files. Answer submitted in another file format such as .doc, .pages, .rtf, or.pdf will lose least one point per problem! [1] 3 points Use file math.txt What is the precise output from the following code? bar...
1 Overview and Background Many of the assignments in this course will introduce you to topics in computational biology. You do not need to know anything about biology to do these assignments other than what is contained in the description itself. The objective of each assignment is for you to acquire certain particular skills or knowledge, and the choice of topic is independent of that objective. Sometimes the topics will be related to computational problems in biology, chemistry, or physics,...