Add the code

In order to create a code block, wrap the code with three backtics ```

Code block

if x == 1:
    print("x is 1.")

```
if x == 1:
    print("x is 1.")
```

In order to highlite code add name of the language, i.e. ```python

Code highliting

if x == 1:
    print("x is 1.")

```python
if x == 1:
    print("x is 1.")
```

In order to add line numbers add *linenums="1"*

Code block with numbers

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def insertion_sort(nums):
    for i in range(1, len(nums)):
        item_to_insert = nums[i]
        j = i - 1
        while j >= 0 and nums[j] > item_to_insert:
            nums[j + 1] = nums[j]
            j -= 1
        nums[j + 1] = item_to_insert

```python linenums="1"
def insertion_sort(nums):
    for i in range(1, len(nums)):
        item_to_insert = nums[i]
        j = i - 1
        while j >= 0 and nums[j] > item_to_insert:
            nums[j + 1] = nums[j]
            j -= 1
        nums[j + 1] = item_to_insert
```

You can also mark specific code lines or ranges

Mark code lines

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def insertion_sort(nums):
    for i in range(1, len(nums)):
        item_to_insert = nums[i]
        j = i - 1
        while j >= 0 and nums[j] > item_to_insert:
            nums[j + 1] = nums[j]
            j -= 1
        nums[j + 1] = item_to_insert

```{.py3 linenums="1" hl_lines="1 5-7"}
def insertion_sort(nums):
    for i in range(1, len(nums)):
        item_to_insert = nums[i]
        j = i - 1
        while j >= 0 and nums[j] > item_to_insert:
            nums[j + 1] = nums[j]
            j -= 1
        nums[j + 1] = item_to_insert
```

Code can be highlited inside the text using the following syntaxis: 

`#!py3 import pymdownx; pymdownx.__version__`

For example:

Inline code highliting

In many languages "hello world!" application is just one-liner. For example in OCaml it is print_endline "Hello, world!";; in Ruby it is puts 'Hello World!' in Python it is print("Hello World)" and in javascript it is console.log("Hello, World!"); 

In many languages "hello world!" application is just one-liner. For example in OCaml it is `#!ocaml print_endline "Hello, world!";;` 
in Ruby it is `#!ruby puts 'Hello World!'` in Python it is `#!py3 print("Hello World)"` and in javascript it is `#!js console.log("Hello, World!");`

💡 Tabs are in particular very useful to group code blocks or display alternative code in different languages. For example if-else statement in different languages:

Language comparison

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amount = 0
if amount < 0:
    print('Negative amount')
elif amount > 0:
    print('Positive amount')
else:
    print('Zero')

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int amount = 0;
if (amount < 0) {
    System.out.println("Negative amount");
} else if (amount > 0) {
    System.out.println("Positive amount");
} else {
    System.out.println("Zero");
}

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amount = 0
if amount < 0
    puts "Negative amount"
elsif amount > 0
    puts "Positive amount"
else
    puts "Zero"

=== "Python"
    ``` python linenums="1"
    amount = 0
    if amount < 0:
        print('Negative amount')
    elif amount > 0:
        print('Positive amount')
    else:
        print('Zero')
    ``` 
=== "Java"
    ``` java linenums="1"
    int amount = 0;
    if (amount < 0) {
        System.out.println("Negative amount");
    } else if (amount > 0) {
        System.out.println("Positive amount");
    } else {
        System.out.println("Zero");
    }
    ``` 
=== "Ruby"
    ``` ruby linenums="1"
    amount = 0
    if amount < 0
        puts "Negative amount"
    elsif amount > 0
        puts "Positive amount"
    else
        puts "Zero"
    ```