[typo](docs) add a python example for stream load. (#20697)

docs/en/docs/data-operate/import/import-way/stream-load-manual.md

@@ -382,6 +382,22 @@ Cluster situation: The concurrency of Stream load is not affected by cluster siz
     curl --location-trusted -u user:password -T /home/store_sales -H "label:abc" http://abc.com:8030/api/bj_sales/store_sales/_stream_load
     ```
 
+### Coding with StreamLoad
+
+You can initiate HTTP requests for Stream Load using any language. Before initiating HTTP requests, you need to set several necessary headers:
+
+```http
+Content-Type: text/plain; charset=UTF-8
+Expect: 100-continue
+Authorization: Basic <Base64 encoded username and password>
+```
+
+`<Base64 encoded username and password>`: a string consist with Doris's `username`, `:` and `password` and then do a base64 encode.
+
+Additionally, it should be noted that if you directly initiate an HTTP request to FE, as Doris will redirect to BE, some frameworks will remove the `Authorization` HTTP header during this process, which requires manual processing.
+
+Doris provides StreamLoad examples in three languages: [Java](https://github.com/apache/doris/tree/master/samples/stream_load/java), [Go](https://github.com/apache/doris/tree/master/samples/stream_load/go), and [Python](https://github.com/apache/doris/tree/master/samples/stream_load/python) for reference.
+
 ## Common Questions
 
 * Label Already Exists

docs/zh-CN/docs/data-operate/import/import-way/stream-load-manual.md

@@ -397,6 +397,22 @@ timeout = 1000s 等于 10G / 10M/s
   curl --location-trusted -u user:password -T /home/store_sales -H "label:abc" http://abc.com:8030/api/bj_sales/store_sales/_stream_load
   ```
 
+### 使用代码调用 StreamLoad
+
+你可以使用任意代码发起 http 请求进行 Stream Load，在发起 http 请求前，需要设置几个必要的 Header：
+
+```http
+Content-Type: text/plain; charset=UTF-8
+Expect: 100-continue
+Authorization: Basic <base64编码后的用户名密码>
+```
+
+其中，`<base64编码后的用户名密码>`是指 Doris 的`username`+`:`+`password`拼接成的字符串进行 base64 编码后得到的值。
+
+另外，需要注意的是，如果你直接对 FE 发起 http 请求，由于 Doris 会重定向到 BE，在这个过程中，某些框架会把`Authorization`这个 http Header 移除掉，这个时候需要你进行手动处理。
+
+Doris 提供了 [Java](https://github.com/apache/doris/tree/master/samples/stream_load/java)、[Go](https://github.com/apache/doris/tree/master/samples/stream_load/go)、[Python](https://github.com/apache/doris/tree/master/samples/stream_load/python) 三种语言的 StreamLoad Example 供参考。
+
 ## 常见问题
 
 - Label Already Exists

samples/stream_load/python/DorisStreamLoad.py

@@ -0,0 +1,86 @@
+# coding=utf-8
+
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import requests
+from requests.auth import HTTPBasicAuth
+import base64
+
+# This script is a python demo for doris stream load
+#
+# How to use:
+# 1. create a table in doris with any mysql client
+# CREATE TABLE `db0`.`t_user` (
+#   `id` int,
+#   `name` string
+# )
+# DUPLICATE KEY(`id`)
+# DISTRIBUTED BY HASH(`id`) BUCKETS 1
+# PROPERTIES (
+#   "replication_num" = "1"
+# );
+#
+# 2. change the Doris cluster, db, user config in this class
+#
+# 3. run this script, you should see the following output:
+#
+# 200 OK
+# {
+#     "TxnId": 14017,
+#     "Label": "2486da70-94bb-47cc-a810-70791add2b8c",
+#     "TwoPhaseCommit": "false",
+#     "Status": "Success",
+#     "Message": "OK",
+#     "NumberTotalRows": 2,
+#     "NumberLoadedRows": 2,
+#     "NumberFilteredRows": 0,
+#     "NumberUnselectedRows": 0,
+#     "LoadBytes": 13,
+#     "LoadTimeMs": 54,
+#     "BeginTxnTimeMs": 1,
+#     "StreamLoadPutTimeMs": 12,
+#     "ReadDataTimeMs": 0,
+#     "WriteDataTimeMs": 11,
+#     "CommitAndPublishTimeMs": 28
+# }
+if __name__ == '__main__':
+    database, table = 'db0', 't_user'
+    username, password = 'root', ''
+    url = 'http://127.0.0.1:8030/api/%s/%s/_stream_load' % (database, table)
+    headers = {
+        'Content-Type': 'text/plain; charset=UTF-8',
+        # 'label': 'your_custom_label',
+        'format': 'csv',
+        "column_separator": ',',
+        'Expect': '100-continue',
+        # 'Authorization': 'Basic ' + base64.b64encode((username + ':' + password).encode('utf-8')).decode('ascii')
+    }
+    auth = HTTPBasicAuth(username, password)
+    session = requests.sessions.Session()
+    session.should_strip_auth = lambda old_url, new_url: False  # Don't strip auth
+
+    data='1,Tom\n2,Jelly'
+
+    resp = session.request(
+        'PUT', url=url,
+        data=data, # open('/path/to/your/data.csv', 'rb'),
+        headers=headers, auth=auth
+    )
+
+    print(resp.status_code, resp.reason)
+    print(resp.text)