Updated Headers Lists.md

Python/Lists.md

@@ -4,7 +4,7 @@ Python’s list is a versatile compound data type used to group multiple values.
 >>> squares
 [1, 4, 9, 16, 25]
 ```
-#### Indexing and Slicing
+### Indexing and Slicing
 Lists support indexing and slicing, similar to strings:
 ```python
 >>> squares[0]  # First item
@@ -14,13 +14,13 @@ Lists support indexing and slicing, similar to strings:
 >>> squares[-3:]  # Slice of last three items
 [9, 16, 25]
 ```
-#### Concatenation
+### Concatenation
 Lists can be concatenated using the `+` operator:
 ```python
 >>> squares + [36, 49, 64, 81, 100]
 [1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
 ```
-#### Mutability
+### Mutability
 Unlike strings, lists are mutable, allowing modification of their content:
 ```python
 >>> cubes = [1, 8, 27, 65, 125]  # Incorrect value
@@ -36,7 +36,7 @@ New items can be added using the `append()` method:
 >>> cubes
 [1, 8, 27, 64, 125, 216, 343]
 ```
-#### Slicing and Shallow Copies
+### Slicing and Shallow Copies
 All slice operations return a new list containing the requested elements. This means slices create a [shallow copy](https://docs.python.org/3/library/copy.html#shallow-vs-deep-copy) of the list:
 ```python
 >>> rgb = ["Red", "Green", "Blue"]
@@ -51,7 +51,7 @@ All slice operations return a new list containing the requested elements. This m
 > [!important] Additional Reading
 >  Datacamp: [Python Copy List: What You Should Know](https://www.datacamp.com/tutorial/python-copy-list)
 >  Geeks for Geeks: [Difference Between Deep and Shallow Copy](https://www.geeksforgeeks.org/difference-between-shallow-and-deep-copy-of-a-class/)
-#### Assigning to Slices
+### Assigning to Slices
 Slices can be used to modify, remove, or clear items:
 ```python
 >>> letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g']
@@ -61,7 +61,7 @@ Slices can be used to modify, remove, or clear items:
 # Returns ['a', 'b', 'f', 'g']
 >>> letters[:] = []  # Clear list
 ```
-#### Length
+### Length
 The `len()` function returns the number of items in a list:
 ```python
 >>> letters = ['a', 'b', 'c', 'd']
@@ -69,7 +69,7 @@ The `len()` function returns the number of items in a list:
 4
 ```
 
-#### Nesting
+### Nesting
 Lists can also contain other lists (nesting):
 ```python
 >>> a = ['a', 'b', 'c']