Python Introduction | JNTUA | R19 | UNIT 1 | Functions

1. Python Programming
By
Mr. Raja Bhargava
Assistant professor
Computer science and Engineering
Visvodaya Technical Academy, Kavali
UNIT-I
Lecture 7
Functions (Part 2)

2. 1. Math functions
2. Composition
3. Adding new functions
4. Flow of execution

3. Module
Set of
functions
Math Module
Set of
mathematical
functions
What is math module?

4. Before we can use the module, we must
import it as mentioned below:
Import math
This statement creates a module named
math.
What is math module?

5. To access one of the functions in the
module, you must specify the name of
the module and the name of the function,
separated by a dot.
math.sqrt(4)
What is math module?

6. Examples

7. Composition

8. Adding new functions

9. Function:
Statement 1
Statement 2
Statement 3
Statement 4
….
….
Program:
Statement 1
Statement 2
Call function
Statement 3
Call function
….
….
Executed
Flow of execution (one function)

10. Function1:
Statement 1
Statement 2
Call function2
Statement 3
….
….
Program:
Statement 1
Statement 2
Call function1
Statement 3
Statement 4
….
….
Executed
Function2:
Statement 1
Statement 2
Statement 3
Statement 4
….
….
Executed
Flow of execution (Two functions)