rahulc93 myshellv2 20130719

Source

The code for the problem can be found here

Solution

The solution to the above problem is given below.

from cmd2 import Cmd
import requests
import pwd

__version__ = '0.1'

class Application(Cmd):
    """
    The main Application class
    """

    def __init__(self):
        Cmd.__init__(self)

    def do_hello(self, line):  # defining the 'hello' command
        print "Hello:", line  # executing the instructions for the command

    def do_sayit(self, line):  # defining the 'sayit' command
        print "Python rocks!"  # executing the instructions for the command

    def do_stock(self, line):  # defining the 'stock' command
        nasdaq = raw_input("Enter NASDAQ code: ")  # taking the NASDAQ code as input from the user
        url = "http://download.finance.yahoo.com/d/quotes.csv?s=%s&f=l1" \
            % (nasdaq)  # the recquired URL from which the share price shall be obtained
        value = requests.get(url).text  # storing the share price from the URL in 'value'
        if value == 0:  # incorrect NASDAQ code provided
        print "Incorrect NASDAQ symbol."  # generate error message
        else:  # share price has been obtained
            print "The current share value is ", value  # display the value

    def do_greet(self, line):  # defining the 'greet' command
        total_list = pwd.getpwall()  # a list of all password database entries
        for x in total_list:  # iterating through the list
            if x[5].find('home') == 1:  # the entry for the user has been found
                print "Hello %s" % x[0]  # print the user name
                break  # exit from the loop



  if __name__ == '__main__':
    app = Application()
    app.cmdloop()

Run the program

To run the program, save it as psh.py, and:

$ python psh.py