Posh_vs_Python_FOREACH.md

Iterating

(A language command you can use to traverse all the items in a collection of items.)

In Python, the equivalent of `foreach($obj in $objects) {}` is a `for` loop. Here's an example:

# PowerShell foreach loop
$objects = @("apple", "banana", "orange")
foreach($obj in $objects) {
    Write-Host $obj
}

# Python for loop
objects = ["apple", "banana", "orange"]
for obj in objects:
    print(obj)

This will output the following:

apple
banana
orange

In Python, the for loop iterates over a sequence, such as a list, tuple, or string. The loop variable (obj in this case) is assigned the value of each element in the sequence, one at a time, until the sequence is exhausted.

Here are a few more examples:

1. Using range() function to iterate over a sequence of numbers:

# Iterate over a sequence of numbers
for i in range(5):
    print(i)

This will output the following:

0
1
2
3
4

2. Using enumerate() function to iterate over a sequence and its index:

# Iterate over a sequence and its index
fruits = ["apple", "banana", "orange"]
for i, fruit in enumerate(fruits):
    print(i, fruit)

This will output the following:

0 apple
1 banana
2 orange

In this example, enumerate() function is used to iterate over both the index and the value of each element in the fruits list.

3. Using zip() function to iterate over multiple sequences in parallel:

# Iterate over multiple sequences in parallel
fruits = ["apple", "banana", "orange"]
colors = ["red", "yellow", "orange"]
for fruit, color in zip(fruits, colors):
    print(fruit, color)

This will output the following:

apple red
banana yellow
orange orange

In this example, zip() function is used to iterate over both the fruits and colors lists in parallel, matching up their corresponding elements.