(PYTHON) In completing this task, you will need to use the following constructs:

Question

(PYTHON)

In completing this task, you will need to use the following constructs:
1. IF / ELSE statements

2. Compound logic (i.e. "and" / "or")

3. WHILE loops

4. File processing

In this task, you will use WHILE loops print N names from the supplied file "first_names.txt". Here is the basic algorithm:
1. Open first_names.txt for reading (file reading template that we use in class)

2. While the user has not entered a number that is between 0 and 50 (the number of names in the file): a. Prompt the user for a number b. Let N = this number

3. Use a WHILE loop and compound logic to output the first N names in the file.
Here's my program's output:

Enter a value between 0 and 50: -100

Enter a value between 0 and 50: -1

Enter a value between 0 and 50: 100

Enter a value between 0 and 50: 51

Enter a value between 0 and 50: 5

Name at 0 : James

Name at 1 : John

Name at 2 : Robert

Name at 3 : Michael

Name at 4 : William

Explanation / Answer

def readFile():
   inp = open ("first_names.txt","r")
   n = 51
   while n < 0 or n > 50 :
       print "Enter a value between 0 and 50:"
       n = input()
   #read line into array
   count = 0
   for line in inp.readlines():
       if count == n :
           break
       print "Name at",count," : ", line
       count += 1

readFile()  

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