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feat(console): python guide
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5 changed files with 238 additions and 6 deletions
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@ -1,5 +1,4 @@
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import { useContext } from 'react';
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import { useTranslation } from 'react-i18next';
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import CopyToClipboard from '@/ds-components/CopyToClipboard';
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import FormField from '@/ds-components/FormField';
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@ -11,7 +10,6 @@ export default function ClientBasics() {
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const {
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app: { id, secret },
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} = useContext(GuideContext);
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const { t } = useTranslation(undefined, { keyPrefix: 'admin_console' });
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return (
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<div className={styles.basic}>
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@ -1 +1,222 @@
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## Replace this with actual guide
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import UriInputField from '@/mdx-components-v2/UriInputField';
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import Tabs from '@mdx/components/Tabs';
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import TabItem from '@mdx/components/TabItem';
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import InlineNotification from '@/ds-components/InlineNotification';
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import { buildIdGenerator } from '@logto/shared/universal';
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import Steps from '@/mdx-components-v2/Steps';
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import Step from '@/mdx-components-v2/Step';
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<Steps>
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<Step title="Get started">
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This tutorial will show you how to integrate Logto into your Python web application.
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<ul>
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<li>The example uses Flask, but the concepts are the same for other frameworks.</li>
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<li>This tutorial assumes your website is hosted on <code>{props.sampleUrls.origin}</code>.</li>
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<li>Logto SDK leverages coroutines, remember to use <code>await</code> when calling async functions.</li>
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</ul>
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```bash
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pip install logto # or `poetry add logto` or whatever you use
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```
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</Step>
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<Step title="Init LogtoClient">
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Insert the following code into your python file:
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<pre>
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<code className="language-python">
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{`from logto import LogtoClient, LogtoConfig
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client = LogtoClient(
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LogtoConfig(
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endpoint= "${props.endpoint}",${props.alternativeEndpoint ? ' // or "${props.alternativeEndpoint}"' : ''}
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appId="${props.app.id}",
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appSecret="${props.app.secret}",
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)
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)`}
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</code>
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</pre>
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Also replace the default memory storage with a persistent storage, for example:
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```python
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from logto import LogtoClient, LogtoConfig, Storage
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from flask import session
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class SessionStorage(Storage):
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def get(self, key: str) -> str | None:
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return session.get(key, None)
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def set(self, key: str, value: str | None) -> None:
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session[key] = value
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def delete(self, key: str) -> None:
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session.pop(key, None)
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client = LogtoClient(
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LogtoConfig(...),
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storage=SessionStorage(),
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)
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```
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</Step>
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<Step title="Implement the sign-in route">
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<p>
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First, let’s enter your redirect URI. E.g. <code>{props.sampleUrls.callback}</code>. This is where Logto will redirect users after they sign in.
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</p>
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<UriInputField name="redirectUris" />
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<pre>
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<code className="language-python">
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{`@app.route("/sign-in")
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async def sign_in():
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# Get the sign-in URL and redirect the user to it
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return redirect(await client.signIn(
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redirectUri="${props.redirectUris[0] || props.sampleUrls.callback}",
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))`}
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</code>
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</pre>
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If you want to show the sign-up page on the first screen, you can set `interactionMode` to `signUp`:
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<pre>
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<code className="language-python">
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{`@app.route("/sign-in")
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async def sign_in():
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# Get the sign-in URL and redirect the user to it
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return redirect(await client.signIn(
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redirectUri="${props.redirectUris[0] || props.sampleUrls.callback}",
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interactionMode="signUp", # Show the sign-up page on the first screen
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))`}
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</code>
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</pre>
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Now, whenever your users visit `/sign-in`, it will start a new sign-in attempt and redirect the user to the Logto sign-in page.
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</Step>
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<Step title="Implement the callback route">
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After the user signs in, Logto will redirect the user to the callback URL you set in the Logto Console. In this example, we use `/callback` as the callback URL:
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<pre>
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<code className="language-python">
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{`@app.route("/callback")
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async def callback():
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try:
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await client.handleSignInCallback(request.url) # Handle a lot of stuff
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return redirect("/") # Redirect the user to the home page after a successful sign-in
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except Exception as e:
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# Change this to your error handling logic
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return "Error: " + str(e)
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`}
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</code>
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</pre>
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</Step>
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<Step title="Implement the home page">
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Here we implement a simple home page for demonstration:
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- If the user is not signed in, show a sign-in button;
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- If the user is signed in, show some basic information about the user.
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```python
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@app.route("/")
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async def home():
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if client.isAuthenticated() is False:
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return "Not authenticated <a href='/sign-in'>Sign in</a>"
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return (
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# Get local ID token claims
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client.getIdTokenClaims().model_dump_json(exclude_unset=True)
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+ "<br>"
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# Fetch user info from Logto userinfo endpoint
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(await client.fetchUserInfo()).model_dump_json(exclude_unset=True)
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+ "<br><a href='/sign-out'>Sign out</a>"
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)
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```
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Our data models are based on [pydantic](https://docs.pydantic.dev/), so you can use `model_dump_json` to dump the data model to JSON.
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Adding `exclude_unset=True` will exclude unset fields from the JSON output, which makes the output more precise.
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For example, if we didn't request the `email` scope when signing in, and the `email` field will be excluded from the JSON output. However, if we requested the `email` scope, but the user doesn't have an email address, the `email` field will be included in the JSON output with a `null` value.
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To learn more about scopes and claims, see [Scopes and claims](https://github.com/logto-io/python/blob/master/docs/tutorial.md#scopes-and-claims).
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</Step>
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<Step title="Implement the sign-out route">
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To clean up the Python session and Logto session, a sign-out route can be implemented as follows:
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<pre>
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<code className="language-python">
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{`@app.route("/sign-out")
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async def sign_out():
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return redirect(
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# Redirect the user to the home page after a successful sign-out
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await client.signOut(postLogoutRedirectUri="${props.sampleUrls.origin}")
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)
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`}
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</code>
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</pre>
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`postLogoutRedirectUri` is optional, and if not provided, the user will be redirected to a Logto default page after a successful sign-out (without redirecting back to your application).
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> The name `postLogoutRedirectUri` is from the [OpenID Connect RP-Initiated Logout](https://openid.net/specs/openid-connect-rpinitiated-1_0.html) specification. Although Logto uses "sign-out" instead of "logout", the concept is the same.
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</Step>
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<Step title="Checkpoint: Test your application">
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Now, you can test your application:
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<ol>
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<li>Visit <code>{props.sampleUrls.origin}</code>, and you should see a "Not authenticated" message with a "Sign in" button.</li>
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<li>Click the "Sign in" button, and you should be redirected to the Logto sign-in page.</li>
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<li>After you sign in, you should be redirected back to <code>{props.sampleUrls.origin}</code>, and you should see your user info and a "Sign out" button.</li>
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<li>Click the "Sign out" button, and you should be redirected back to <code>{props.sampleUrls.origin}</code>, and you should see a "Not authenticated" message with a "Sign in" button.</li>
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</ol>
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</Step>
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<Step title="Protect your routes">
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Now, you have a working sign-in flow, but your routes are still unprotected. Per the framework you use, you can create a decorator such as `@authenticated` to protect your routes. For example:
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```python
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def authenticated(func):
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@wraps(func)
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async def wrapper(*args, **kwargs):
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if client.isAuthenticated() is False:
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return redirect("/sign-in") # Or directly call `client.signIn`
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return await func(*args, **kwargs)
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return wrapper
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```
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Then, you can use the decorator to protect your routes:
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```python
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@app.route("/protected")
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@authenticated
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async def protected():
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return "Protected page"
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```
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You can also create a middleware to achieve the same goal.
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</Step>
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</Steps>
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@ -4,9 +4,12 @@ import { type GuideMetadata } from '../types';
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const metadata: Readonly<GuideMetadata> = Object.freeze({
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name: 'Python',
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description:
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'Python is a programming language that lets you work quickly and integrate systems more effectively.',
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description: 'Integrate Logto into your Python web app, such as Django and Flask.',
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target: ApplicationType.Traditional,
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sample: {
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repo: 'python',
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path: 'samples',
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},
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});
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export default metadata;
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margin: _.unit(4) 0;
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}
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section ul > li {
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section ul > li,
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section ol > li {
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font: var(--font-body-2);
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margin-block: _.unit(2);
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padding-inline-start: _.unit(1);
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}
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redirectUris: string[];
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postLogoutRedirectUris: string[];
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isCompact: boolean;
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sampleUrls: {
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origin: string;
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callback: string;
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};
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};
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// eslint-disable-next-line no-restricted-syntax
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redirectUris: app.oidcClientMetadata.redirectUris,
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postLogoutRedirectUris: app.oidcClientMetadata.postLogoutRedirectUris,
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isCompact: Boolean(isCompact),
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sampleUrls: {
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origin: 'http://localhost:3001/',
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callback: 'http://localhost:3001/callback',
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},
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}) satisfies GuideContextType,
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[guide, app, tenantEndpoint, isCustomDomainActive, isCompact]
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);
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