Python for Data Science: Chapter 2: Functions and Files

Functions in Python: Basic Conceptons

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What is function? Explain the need for writing a function in Python.

Chapter:2

Functions and Files

Introduction to Functions

Basic Conceptons

What is function ?

• Function is a block of instructions that performs a specific and well defined task. This block can be repeatedly called by other programming instruction.

• Every function is specified by a name.

• Following are some reasons why do we need to use functions in python :

1. All the logically related statements can be grouped together in one entity. This makes the program easy to read, understand and debug.

2. The repetition of frequently required code can be avoided by using function.

3. Dividing a long program into functions allows us to debug the parts one at a time and then assemble them into a working whole.

4. Once the code of the function is written and tested, we can reuse this code. Reusability is an important use of function.

Review Question

1. What is function? Explain the need for writing a function in Python.

Python for Data Science: Chapter 2: Functions and Files : Tag: Computer Programming, Python, Data Science : - Functions in Python: Basic Conceptons

Home | Department: AID Department | Ist Year | Subject: Python for Data Science |

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Python for Data Science: Chapter 2: Functions and Files

Functions in Python: Basic Conceptons

Python: Defining a Function

Python: Function Calling

Python: Passing Arguments in Function

Python: Return Values in Function

Python: Passing a List in Function

Python: Local and Global Variable

Python: Creating and using a Class

Python: Working with Strings

Python Programming examples based on string

Python: Working with Files

Python: Exceptions

Python Libraries

Python Importing Libraries

Python Functions and Files: Two Marks Important Questions and Answers - Python for Data Science

Python Functions and Files: Important Part B Questions - Python for Data Science

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