Python functionality and evolution
Installing Python (windows and Ubuntu)
IDLE (Integrated Development and Learning Environment)
Write the first python program and execute it
Keywords in Python
Identifiers in Python
Indentation in Python
Comments in Python
Multi-line Comments in Python
Getting user input
Python Function
Calling a function
Arguments in Function
Scope of Variables
Modules in Python
The PYTHON PATH-Variable
Python File Open
Python File Opening Modes
The file-Object-Attributes
Python File Close() Method
Python File Read/Write
Python File Position
Renaming and Deleting Files in Python
Python Directory Methods
File/Directory Methods
Exceptions in Python
The try-finally Clause
The argument of Exception
Raising Exceptions
Python Built-in Exceptions
Python OOPs Concepts
Python Classes/Objects
Creating Instance Objects
Accessing Attributes
Built-In Class Attributes
Garbage Collection
Python Inheritance
Overriding Methods
Method overriding
Data Hiding
Regular Expression
The match function
The search function
Match Object Methods & Description
Matching or Searching
Search or Replace
Regular Expression Modifiers / Option Flags
Grouping with Parentheses
Python Socket Programming
Python Socket Server
Python Socket Client
Send Data Between Clients
Python Socket or Server
Python Socket Clients
Points to ponder
The Variables in a program may not be accessible at all the locations inprogram. This depends on where you declared the variable.
The Scope of a variable determines portion of the program in where you get access the particular identifier. There are two types of variables in Python:
• Global-variables
• Local-variables
Global vs. Local-variables
The Variables that are defined inside a function body has a local scope, and those defined outside has a global-scope.
That means that local variables can be accessed only in the function in which they declared, where global variables can access throughout the program body by all functions. When you call the function, the variables declared inside it are come into scope.
Live Demo
Output:
Inside function local total : 30
Outside function global total : 0
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Study Material