docs: how to write LineProtocol

Author: bednar

MIGRATION_GUIDE.md

@@ -99,11 +99,23 @@ with InfluxDBClient(url='http://localhost:8086', token='my-token', org='my-org')
 **influxdb-python**
 
 ```python
+from influxdb import InfluxDBClient
+
+client = InfluxDBClient(host='127.0.0.1', port=8086, username='root', password='root', database='dbname')
+
+client.write('h2o_feet,location=coyote_creek water_level=1.0 1', protocol='line')
 ```
 
 **influxdb-client-python**
 
 ```python
+from influxdb_client import InfluxDBClient
+from influxdb_client.client.write_api import SYNCHRONOUS
+
+with InfluxDBClient(url='http://localhost:8086', token='my-token', org='my-org') as client:
+    write_api = client.write_api(write_options=SYNCHRONOUS)
+
+    write_api.write(bucket='my-bucket', record='h2o_feet,location=coyote_creek water_level=1.0 1')
 ```
 
 ## Writing Point Object

examples/buckets_management.py

@@ -1,42 +1,7 @@
-"""
-How to How to create, list and delete Buckets.
-"""
+from influxdb_client import InfluxDBClient
+from influxdb_client.client.write_api import SYNCHRONOUS
 
-from influxdb_client import InfluxDBClient, BucketRetentionRules
-
-"""
-Define credentials
-"""
-url = "http://localhost:8086"
-token = "my-token"
-org = "my-org"
-
-with InfluxDBClient(url=url, token=token) as client:
-    buckets_api = client.buckets_api()
-
-    """
-    Create Bucket with retention policy set to 3600 seconds and name "bucket-by-python"
-    """
-    print(f"------- Create -------\n")
-    retention_rules = BucketRetentionRules(type="expire", every_seconds=3600)
-    created_bucket = buckets_api.create_bucket(bucket_name="bucket-by-python",
-                                               retention_rules=retention_rules,
-                                               org=org)
-    print(created_bucket)
-
-    """
-    List all Buckets
-    """
-    print(f"\n------- List -------\n")
-    buckets = buckets_api.find_buckets().buckets
-    print("\n".join([f" ---\n ID: {bucket.id}\n Name: {bucket.name}\n Retention: {bucket.retention_rules}"
-                     for bucket in buckets]))
-    print("---")
-
-    """
-    Delete previously created bucket
-    """
-    print(f"------- Delete -------\n")
-    buckets_api.delete_bucket(created_bucket)
-    print(f" successfully deleted bucket: {created_bucket.name}")
+with InfluxDBClient(url='http://localhost:8086', token='my-token', org='my-org') as client:
+    write_api = client.write_api(write_options=SYNCHRONOUS)
 
+    write_api.write(bucket='my-bucket', record='h2o_feet,location=coyote_creek water_level=1.0 1')