#3 Python Tutorial for Beginners | Global Variable in Python | Global vs Local Variable смотреть онлайн

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In this video I am Telling you that we can watch the video of Global Variable in Python and basic step as follows:

#1 Scope of variable
#2 Local variable
#3 Global variable
#4 Global keyword
#5 Global() function

#1 Scope of variable:
Variable scope determines where a variable works. Global scope applies it universally. Local scope confines to a function. Block scope limits within braces. Scope understanding prevents errors and boosts code clarity.

#2 Local variable:
A local variable is limited to a particular program section, often within a function, and remains inaccessible outside of it. This maintains data organization, averting unintended modifications in other code segments.

#3 Global variable:
A global variable functions throughout the whole program, reachable from any section. It's established outside functions and alterable from anywhere. Care is needed with global variables to prevent unintended clashes or excessive usage, which could make code upkeep more complex.

#4 Global keyword:
The global keyword is utilized in programming to label a variable as global, granting accessibility throughout the program. It's added to a local variable for a global reach. Yet, caution is advised to avert confusion and unintended impacts on other code segments.

#5 Global() function:
The "global()" function isn't common in programming languages. To provide accurate insight, kindly share more context or specify the programming language you're inquiring about.

Example of using a global variable in Python:

```python
# Declaring a global variable
global_variable = 10

def increment_global():
global global_variable # Explicitly stating that we're using the global variable
global_variable += 1

def decrement_global():
global global_variable
global_variable -= 1

def main():
print("Initial global variable:", global_variable)

increment_global() # Incrementing the global variable
print("After incrementing:", global_variable)

decrement_global() # Decrementing the global variable
print("After decrementing:", global_variable)

if __name__ == "__main__":
main()
```

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