Add keyword entry: try (Python)

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

@@ -0,0 +1,75 @@
+---
+Title: 'try'
+Description: 'Attempts to execute a block of code and lets the program handle exceptions gracefully if errors occur.'
+Subjects:
+  - 'Computer Science'
+  - 'Data Science'
+Tags:
+  - 'Error Handling'
+  - 'Exceptions'
+  - 'Python'
+  - 'Values'
+CatalogContent:
+  - 'learn-python-3'
+  - 'paths/computer-science'
+---
+
+The **`try`** keyword in Python is used to define a code block that may raise an exception, allowing errors to be caught and handled gracefully with `except`, and optionally complemented by `else` and `finally` clauses.
+
+## Syntax
+
+```pseudo
+try:
+  # Code that might raise an exception
+except ExceptionType:
+  # Code to handle the exception
+else:
+  # (Optional) Code to run if no exceptions occur
+finally:
+  # (Optional) Code that always runs
+```
+
+In the syntax:
+
+- `except` (Optional): Specifies the type of exception to catch. Multiple `except` blocks can handle different exceptions.
+- `else` (Optional): A block that runs only if the `try` block doesn't raise an exception.
+- `finally` (Optional): A block that always runs, regardless of whether an exception occurred or not.
+
+**Return value:**
+
+The `try` statement itself does not return a value. It controls the flow of execution by handling exceptions within its block.
+
+## Example: Handling Division Error with `try-except`
+
+This example shows how to catch a `ZeroDivisionError` using a simple `try-except` block:
+
+```py
+try:
+  x = 10 / 0
+except ZeroDivisionError:
+  print("Cannot divide by zero.")
+```
+
+The output of this code will be:
+
+```shell
+Cannot divide by zero.
+```
+
+## Codebyte Example: Handling Multiple Exceptions with `try-except-finally`
+
+This codebyte example captures both invalid input and division-by-zero errors while ensuring a final message always prints:
+
+```codebyte/python
+try:
+  number = 5
+  print("Reciprocal is:", 1 / number)
+except ValueError:
+  print("That's not a valid number!")
+except ZeroDivisionError:
+  print("Cannot divide by zero.")
+finally:
+  print("Thanks for trying!")
+```
+
+> **Note:** Change the value entered for `number` to see different results and exception handling in action.