[Text Entry]: Python Keywords: except

content/python/concepts/keywords/terms/except/except.md

@@ -0,0 +1,79 @@
+---
+Title: 'except'
+Description: 'Catches and handles exceptions raised in the try block.'
+Subjects:
+  - 'Code Foundations'
+  - 'Computer Science'
+Tags:
+  - 'Error Handling'
+  - 'Exceptions'
+  - 'Try'
+CatalogContent:
+  - 'learn-python-3'
+  - 'paths/computer-science'
+---
+
+The **`except`** keyword defines a block of code that executes when an [error](https://www.codecademy.com/resources/docs/python/errors) occurs in the associated try block, allowing the program to handle exceptions gracefully.
+
+## Syntax
+
+```pseudo
+try:
+  # code that might raise an exception
+except:
+  # code to handle the exception
+```
+
+A specific exception type can also be mentioned as follows:
+
+```pseudo
+try:
+  # code that might raise an exception
+except ExceptionType:
+  # code that runs if the specified exception occurs
+```
+
+**Parameters:**
+
+- `ExceptionType` (optional): Specifies the type of exception to catch (e.g., `ValueError`, `ZeroDivisionError`).
+
+**Return value:**
+
+- The except block itself does not return a value.
+- It executes code when the associated `try` block raises a matching exception.
+
+## Working of the `try-except` block
+
+In the `try` block, code that might cause an error is executed. If an error occurs, the flow jumps to the `except` block to handle it gracefully. Specifying an exception type in `except` limits handling to that particular error, allowing for more precise control.
+
+> **Note**: If no exception type is specified, the `except` block will catch all exceptions. It’s best to use specific exception types to avoid unintentionally hiding bugs or critical errors.
+
+## Example: Handling Index Error with a General `except` Block
+
+This example attempts to access an invalid index in a list, triggering an error that is caught using a general `except` block to prevent the program from crashing:
+
+```py
+try:
+  array = [0, 1, 2]
+  # list index out of range
+  n = array[3]
+except:
+  print('An error occurred.')
+```
+
+The output for this code block will be:
+
+```shell
+An error occurred.
+```
+
+## Codebyte Example
+
+The following example demonstrates how the `except` block handles dividing by zero error:
+
+```codebyte/python
+try:
+  result = 10 / 0
+except ZeroDivisionError:
+  print('Error: Cannot divide by zero.')
+```