docs: Add Flask(Python) quick start guide (#40746)

* feat: Add Flask quick start

* feat: Add Flask (python) quick start to the menu

* Small changes

---------

Co-authored-by: Chris Chinchilla <chris.ward@supabase.io>

apps/docs/components/Navigation/NavigationMenu/NavigationMenu.constants.ts

@@ -375,6 +375,11 @@ export const gettingstarted: NavMenuConstant = {
           name: 'SvelteKit',
           url: '/guides/getting-started/quickstarts/sveltekit' as `/${string}`,
         },
+        {
+          name: 'Flask (Python)',
+          url: '/guides/getting-started/quickstarts/flask' as `/${string}`,
+          enabled: !jsOnly,
+        },
         {
           name: 'TanStack Start',
           url: '/guides/getting-started/quickstarts/tanstack' as `/${string}`,
@@ -389,7 +394,6 @@ export const gettingstarted: NavMenuConstant = {
           url: '/guides/getting-started/quickstarts/ruby-on-rails' as `/${string}`,
           enabled: !jsOnly,
         },
-
         {
           name: 'SolidJS',
           url: '/guides/getting-started/quickstarts/solidjs',

apps/docs/content/guides/getting-started/quickstarts/flask.mdx

@@ -0,0 +1,154 @@
+---
+title: 'Use Supabase with Python'
+subtitle: 'Learn how to create a Supabase project, add some sample data to your database, and query the data from a Python app.'
+breadcrumb: 'Framework Quickstarts'
+hideToc: true
+---
+
+<StepHikeCompact>
+
+  <StepHikeCompact.Step step={1}>
+
+    <$Partial path="quickstart_db_setup.mdx" />
+
+  </StepHikeCompact.Step>
+
+  <StepHikeCompact.Step step={2}>
+
+    <StepHikeCompact.Details title="Create a Python app with Flask">
+
+    Create a new directory for your Python app and set up a virtual environment.
+
+    </StepHikeCompact.Details>
+
+    <StepHikeCompact.Code>
+
+      ```bash name=Terminal
+      mkdir my-app && cd my-app
+      python3 -m venv venv
+      source venv/bin/activate
+      ```
+
+    </StepHikeCompact.Code>
+
+  </StepHikeCompact.Step>
+
+  <StepHikeCompact.Step step={3}>
+    <StepHikeCompact.Details title="Install Flask and the Supabase client library">
+
+    The fastest way to get started is to use Flask for the web framework and the `supabase-py` client library which provides a convenient interface for working with Supabase from a Python app.
+
+    Install both packages using pip.
+
+    </StepHikeCompact.Details>
+
+    <StepHikeCompact.Code>
+
+      ```bash name=Terminal
+      pip install flask supabase
+      ```
+
+    </StepHikeCompact.Code>
+
+  </StepHikeCompact.Step>
+
+  <StepHikeCompact.Step step={4}>
+    <StepHikeCompact.Details title="Create Environment Variables file">
+
+    Create a `.env` file in your project root and populate it with your Supabase connection variables:
+
+    <ProjectConfigVariables variable="url" />
+    <ProjectConfigVariables variable="publishable" />
+    <ProjectConfigVariables variable="anon" />
+
+    </StepHikeCompact.Details>
+
+    <StepHikeCompact.Code>
+
+      <$CodeTabs>
+
+        ```text name=.env
+        SUPABASE_URL=<SUBSTITUTE_SUPABASE_URL>
+        SUPABASE_PUBLISHABLE_KEY=<SUBSTITUTE_SUPABASE_PUBLISHABLE_KEY>
+        ```
+
+      </$CodeTabs>
+
+      <$Partial path="api_settings_steps.mdx" variables={{ "framework": "", "tab": "" }} />
+
+    </StepHikeCompact.Code>
+
+  </StepHikeCompact.Step>
+
+  <StepHikeCompact.Step step={5}>
+    <StepHikeCompact.Details title="Query data from the app">
+
+    Install the `python-dotenv` package to load environment variables:
+
+    ```bash
+    pip install python-dotenv
+    ```
+
+    Create an `app.py` file and add a route that fetches data from your `instruments` table using the Supabase client.
+
+    </StepHikeCompact.Details>
+    <StepHikeCompact.Code>
+
+      ```python name=app.py
+      import os
+      from flask import Flask
+      from supabase import create_client, Client
+      from dotenv import load_dotenv
+
+      load_dotenv()
+
+      app = Flask(__name__)
+
+      supabase: Client = create_client(
+          os.environ.get("SUPABASE_URL"),
+          os.environ.get("SUPABASE_PUBLISHABLE_KEY")
+      )
+
+      @app.route('/')
+      def index():
+          response = supabase.table('instruments').select("*").execute()
+          instruments = response.data
+
+          html = '<h1>Instruments</h1><ul>'
+          for instrument in instruments:
+              html += f'<li>{instrument["name"]}</li>'
+          html += '</ul>'
+
+          return html
+
+      if __name__ == '__main__':
+          app.run(debug=True)
+      ```
+
+    </StepHikeCompact.Code>
+
+  </StepHikeCompact.Step>
+
+  <StepHikeCompact.Step step={6}>
+    <StepHikeCompact.Details title="Start the app">
+
+    Run the Flask development server, go to http://localhost:5000 in a browser and you should see the list of instruments.
+
+    </StepHikeCompact.Details>
+
+    <StepHikeCompact.Code>
+
+      ```bash name=Terminal
+      python app.py
+      ```
+
+    </StepHikeCompact.Code>
+
+  </StepHikeCompact.Step>
+</StepHikeCompact>
+
+## Next steps
+
+- Set up [Auth](/docs/guides/auth) for your app
+- [Insert more data](/docs/guides/database/import-data) into your database
+- Upload and serve static files using [Storage](/docs/guides/storage)