Merge pull request #554 from Avaiga/doc/tutorials

Restructured Getting started and new Tutorials tab

docs/getting_started-new/hello-world.md

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+
+Taipy Core provides the key concept of _Scenario_. Among other functionalities, a _Scenario_ represents an instance
+of a data science problem with its datasets (modeled as _Data nodes_ in Taipy Core) and holds the algorithms used to
+solve the problem. The algorithms are modeled as an execution graph (a Directed Acyclic Graph or DAG) that can be
+seen as a succession of functions (or _Tasks_) that exchange data. With Taipy Core, you can model
+simple or very complex algorithms.
+
+This section aims to build a _Hello world_ example to show how to quickly configure, create and submit
+a scenario. The following picture represents the scenario execution graph made of two data nodes
+(blue boxes) and one task (orange box).
+
+![hello world example](../pic/hello_world.svg){width=75%}
+
+It first consists in one data node named _name_. It represents an input data node.
+Then a task named _build message_ takes the first data node and returns a second data node named _message_.
+
+Building the corresponding Taipy Core application requires three easy steps.
+
+## Configuring the application
+
+The purpose is to configure the structure of the execution graph. It includes in particular the
+configuration of the data nodes, tasks, and scenarios.
+
+```python linenums="1"
+from taipy import Config
+
+
+def build_message(name: str):
+    return f"Hello {name}!"
+
+
+name_data_node_cfg = Config.configure_data_node(id="name")
+message_data_node_cfg = Config.configure_data_node(id="message")
+build_msg_task_cfg = Config.configure_task("build_msg", build_message, name_data_node_cfg, message_data_node_cfg)
+scenario_cfg = Config.configure_scenario("scenario", task_configs=[build_msg_task_cfg])
+```
+
+In lines 4-5, we define the function used later in the task to configure.
+
+In lines 8 and 9, we configure the two data nodes named _name_ and _message_.
+
+In line 10, we configure the task named _build_msg_ representing the function `build_message()`.
+Since the function has one parameter and returns one value, the task has one input data node _name_ and one
+output data node _message_.
+
+Finally, in line 11, we configure the execution graph of the scenario providing the previously configured task.
+
+## Running Core service
+
+Running Taipy Core as a service allows Taipy to set up all necessary variables to use Core functionalities.
+
+``` python linenums="1"
+from taipy import Core
+
+if __name__ == "__main__":
+    Core().run()
+```
+
+Line 3 is a standard boilerplate code that ensures the code is executed only from the main module. It protects
+users from accidentally invoking the script when they didn't intend to. We strongly recommend using it.
+
+In line 4, we simply instantiate and run a Core service.
+
+## Creating Scenarios and accessing data
+
+Now you can create and manage _Scenarios_, submit the graph of _Tasks_ for execution, and access the _data nodes_.
+
+```python linenums="1"
+import taipy as tp
+
+zinedine_scenario = tp.create_scenario(scenario_cfg)
+zinedine_scenario.name.write("Zinedine")
+zinedine_scenario.submit()
+print(zinedine_scenario.message.read())
+
+kylian_scenario = tp.create_scenario(scenario_cfg)
+kylian_scenario.person.write("Kylian Mbappe")
+kylian_scenario.submit()
+print(kylian_scenario.message.read())
+```
+
+In line 3, method `tp.create_scenario()` instantiates the new scenario `zinedine_scenario`
+from the scenario configuration built before.
+
+In line 4, we get the input data node `name` of the `zinedine_scenario` and set its data
+with the string value `"Zinedine"` using the method `write()`.
+
+In line 5, the `zinedine_scenario` is submitted for an execution. This triggers the creation
+and execution of a job. This job reads the input data node, passes the value
+to the function `build_message()` and writes the result in the output data node.
+
+Line 6 reads and prints the output data node `message` that has been written by the execution
+of the scenario `zinedine_scenario`.
+
+In line 8, we use the same scenario configuration to instantiate a second scenario: `kylian_scenario`.
+Similarly, in lines 9-11, we write some value in its input data node, submit it and print the result written
+in its output data node.
+
+
+Here is the complete python code corresponding to the example:
+<a href="./code_example/basic_example.py" download>`basic_example.py`</a>
+
+And here is the expected output.
+
+``` console
+[2023-02-08 20:19:35,062][Taipy][INFO] job JOB_build_msg_9e5a5c28-6c3e-4b59-831d-fcc8b43f882e is completed.
+Hello Zinedine!
+[2023-02-08 20:19:35,395][Taipy][INFO] job JOB_build_msg_684b8a3e-8e5a-406d-8790-009565ed57be is completed.
+Hello Kylian Mbappe!
+```
+
+!!! note
+
+    This third step consists in calling the various Core APIs to access, manage and submit the Taipy
+    entities. Typically it is implemented in Python functions that are called by a graphical interface
+    built with [Taipy GUI](../../gui/index.md).
+
+    For example, the `tp.create_scenario()` or the `tp.submit()`
+    methods are called when clicking respectively on a "create scenario" or "submit scenario" buttons.
+    When displaying a data node in a graphical component (chart, table, etc. ) the `read()` and `write()`
+    method are called to edit and retrieve the data.
+
+
+!!! important
+
+    Please refer to the [Getting started with Core](../../../getting_started/getting-started-core/index.md)
+    manual for a more realistic use case.

docs/getting_started-new/index.md

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+# Getting Started
+
+Next, we will delve into the two fundamental components of web application development using Python in Taipy. You will gain insights into managing HTTP requests, routing, database management, and the creation of dynamic web pages through templating engines. Additionally, we will explore topics such as user authentication, data validation, and best practices to fortify the robustness and security of your applications.
+
+!!! info "For additional information about the Taipy open-source Python library, please refer to [Welcome to Taipy](https://docs.taipy.io/en/develop/)"
+
+Throughout this article, we will furnish code examples and practical insights to bolster your comprehension and facilitate the practical application of your newfound knowledge. Furthermore, we will offer recommendations for supplementary resources, tutorials, and community support to enrich your learning journey.

docs/installation.md → docs/getting_started-new/installation.md

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----
-hide:
-  - navigation
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-
-# Install Taipy
 
 Welcome to the installation section of the Taipy web application builder! This section will guide you through the seamless and straightforward process of setting up and deploying your own powerful web applications.
 

mkdocs.yml_template

@@ -9,9 +9,12 @@ copyright: © [YEAR] Avaiga
 nav:
   - Home:
     - index.md
-  - "Getting Started":
+  - "Getting started":
+    - getting_started-new/index.md
+    - "Install Taipy": getting_started-new/installation.md
+    - "Hello World": getting_started-new/hello-world.md
+  - "Tutorials":
     - getting_started/index.md
-    - "Install Taipy": installation.md
     [GETTING_STARTED_CONTENT]
   - "Manuals":
     - manuals/index.md