Python Lab Ex 9

L9.2 Exercises
Exercise L9.E1 – The Fibonacci sequence is defined with an integer n as,
F(n) = F(n1)  F(n2)
for
n = 2, where F(0) = 0,F(1) = 1.
You have to develop a Python program to compute
F(n)
for a given integer
n
between 0 and 20.
Input:
0 < n < 20
Output:
F(n) < 2^32
Compute F(n) starting with n=2 and increment iteratively until the required value is obtained. Follow
the instructions below.

1. Create a text file named “FileIn.txt” containing the value of
n
. The text file needs to be saved
in the same folder where the source file has been saved.
2. Develop a Python function named “getNum” to read the number n from the file “FileIn.txt”.
3. Develop a Python function named “show” to display the given value n and the computed value
of F(n) on the screen.
4. Develop a Python function named “saveFile” to write what was displayed in (3) above to a
text file named “result.txt”. This file should be in the same folder where the source file is.
5. The program should call the appropriate functions to achieve the task.