In python/SpyderA. We can define the sum from 1 to x (i. e. 1 + 2 + ... + x) recursively as follows for integer x ≥ 1:1, if x = 1x + sum from 1 to x-1 if x > 1Complete the following Python program to compute the sum 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 recursively:def main():# compute and print 1 + 2 + ... + 10print (sum(10) )def sum(x):# you complete this function recursivelymain()}B. Simple ATM simulation – write an application that displays a menu of options and process accordingly based on user selection. Implement a function for each option selected. Add exception handling where appropriate.

Write a method that accepts a string object as an argument and returns the number of words it contains. for instance, if the argument is "four score and seven years ago", the method should return the number 6. demonstrate the method in a program that asks the user to input a string and then passes that string into the method, printing out whatever the method returns.

When you type the pwd command, you notice that your current location on the linux filesystem is the /usr/local directory. answer the following questions, assuming that your current directory is /usr/local for each question. a. which command could you use to change to the /usr directory using an absolute pathname? b. which command could you use to change to the /usr directory using a relative pathname? c. which command could you use to change to the /usr/local/share/info directory using an absolute pathname? d. which command could you use to change to the /usr/local/share/info directory using a relative pathname? e. which command could you use to change to the /etc directory using an absolute pathname? f. which command could you use to change to the /etc directory using a relative pathname?

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