Lecture 16 - Exercises

16A - split and join

1. What does the following print?

   print("_".join("88r4if4r462".split("r4")))

16B - Reading and Writing Files

2. Suppose the file rick.txt contains:

   Never gonna give you up

   What is the output of the following code?

   print(open("rick.txt", "r").read(5).split("e"))

3. Assume a file called fin.txt exists in the same directory as the program below, and has the following contents:

   Start: 4pm
   End: 7pm
   3h

   What does the following program print?

   fin = open("fin.txt", 'r')
   fot = open("fot.txt", 'w')
   
   for line in fin:
       fl = line.strip().split(': ')
   
       fot.write(fl[-1])
       fot.write(fl[0])
   
   fot.close()
   fin.close()
   
   fot = open("fot.txt", 'r')
   a = fot.read(3)
   fot.seek(8)
   print(a, fot.read())
   fot.close()