Gain insights into Python by leveraging your PowerShell knowledge. Delve into syntax, semantics, and core concepts of Python, making learning efficient through associative learning techniques.

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PowerShell is a go-to scripting language for almost ANYTHING! Now, if you’re hoping to learn Python, then you’re in the right place. As you start this course, you’ll begin to notice that there are a lot of patterns and concepts shared between the two languages. 

Thus during this course, you will easily be able to relate new Python concepts to the concepts you already know in PowerShell, a learning style called Associative Learning. 

This PowerShell Scripting guide to Python is designed to make you familiar with syntax, semantics, and core concepts of the Python language. And by using concepts you already know in PowerShell, you’ll be able to learn Python fast and effectively in a way that sticks with you for a longer period of time.

Learning Python through PowerShell Concepts

## Lists

A list in Python is just an ordered collection of heterogeneous item types and is dynamically mutable, meaning its size can change. List data structures support operations like `add`, `delete`, and `insert`.





## creating empty lists
fruits = []

## adding elements to list
fruits.append('apple')
fruits.append('banana')
fruits.append('orange')

print(fruits)


**Key Pointers**
* Python List
* Mutable
* Heterogeneous or homogeneous items, hence can be used as arrays
* Loosely typed
* Built-in into Python
* Generally comparatively slower than arrays, though the performance may vary in different use cases


### Common PowerShell array and Python lists operations
Let's discuss the common array operations.
#### Finding Length

PowerShell arrays have a property `Length` which can be accessed using the dot operator (`.`) to get the length (number of elements) of the array.

```PowerShell
## Find length of an array using 'length' attribute
$cars = "tesla", "lamborghini", "rolls royce", "mercedes"
$cars.Length
```


Python array lengths are calculated using the built-in function `len()`.

```Python
### Find length of an array using len()
cars = ["tesla", "lamborghini", "rolls royce", "mercedes"]
print(len(cars))
```


#### Indexing and access/modify elements

PowerShell and Python are zero indexed, which means the first element of a PowerShell array or Python list has an index of `0`. Both array and list indices can be used in square brackets `[index]` to access and modify elements, like in the following examples. Modifying an element is technically a variable assignment to an array or list index.



# Lists

A list in Python is just an ordered collection of heterogeneous item types and is dynamically mutable, meaning its size can change. List data structures support operations like `add`, `delete`, and `insert`.





**Key Pointers**
* Python List
* Mutable
* Heterogeneous or homogeneous items, hence can be used as arrays
* Loosely typed
* Built-in into Python
* Generally comparatively slower than arrays, though the performance may vary in different use cases


## Common PowerShell array and Python lists operations
Let's discuss the common array operations.
### Finding Length

PowerShell arrays have a property `Length` which can be accessed using the dot operator (`.`) to get the length (number of elements) of the array.

```PowerShell
## Find length of an array using 'length' attribute
$cars = "tesla", "lamborghini", "rolls royce", "mercedes"
$cars.Length
```


Python array lengths are calculated using the built-in function `len()`.

```Python
### Find length of an array using len()
cars = ["tesla", "lamborghini", "rolls royce", "mercedes"]
print(len(cars))
```


### Indexing and access/modify elements

PowerShell and Python are zero indexed, which means the first element of a PowerShell array or Python list has an index of `0`. Both array and list indices can be used in square brackets `[index]` to access and modify elements, like in the following examples. Modifying an element is technically a variable assignment to an array or list index.



Learn what lists are and what operations can be performed on lists.

Introduction

Basics

Object Introspection

Data Types and Its Manipulation

Data Structures

Conditional Statements

Loops

Functions

Handling Json, Xml, and Csv

Error Handling and Builtin Functions

Builtin Functions

Appendix

Conclusion

List and Its Operations

Lists

Common PowerShell array and Python lists operations

Finding Length