update PG (#18)

Author: haobibo

src/README.md

@@ -1,7 +1,7 @@
 # Aloha!
 
 [![License](https://img.shields.io/github/license/QPod/aloha)](https://github.com/QPod/aloha/blob/main/LICENSE)
-[![GitHub Workflow Status](https://img.shields.io/github/workflow/status/QPod/aloha/build)](https://github.com/QPod/aloha/actions)
+[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/QPod/aloha-python/pip.yml?branch=main)](https://github.com/QPod/aloha-python/actions)
 [![Join the Gitter Chat](https://img.shields.io/gitter/room/nwjs/nw.js.svg)](https://gitter.im/QPod/)
 [![PyPI version](https://img.shields.io/pypi/v/aloha)](https://pypi.python.org/pypi/aloha/)
 [![PyPI Downloads](https://img.shields.io/pypi/dm/aloha)](https://pepy.tech/badge/aloha/)
@@ -21,6 +21,6 @@ Please generously STAR★ our project or donate to us!  [![GitHub Starts](https:
 
 ## Getting started
 
-```py
+```shell
 pip install aloha[all]
 ```

src/aloha/db/postgres.py

@@ -1,13 +1,13 @@
 __all__ = ('PostgresOperator',)
 
-import psycopg2
+import psycopg
 from sqlalchemy import create_engine
 from sqlalchemy.sql import text
 
 from .base import PasswordVault
 from ..logger import LOG
 
-LOG.debug('postgres: psycopg2 version = %s' % psycopg2.__version__)
+LOG.debug('postgres: psycopg2 version = %s' % psycopg.__version__)
 
 
 class PostgresOperator:
@@ -26,8 +26,8 @@ def __init__(self, db_config, **kwargs):
 
         try:
             self.engine = create_engine(
-                'postgresql+psycopg2://{user}:{password}@{host}:{port}/{dbname}'.format(**self._config),
-                connect_args=connect_args, client_encoding='utf8', encoding='utf-8',
+                'postgresql+psycopg://{user}:{password}@{host}:{port}/{dbname}'.format(**self._config),
+                connect_args=connect_args, client_encoding='utf8',
                 pool_size=20, max_overflow=10, pool_pre_ping=True, **kwargs
             )
             LOG.debug("PostgresSQL connected: {host}:{port}/{dbname}".format(**self._config))

src/setup.py

@@ -14,7 +14,7 @@
 dict_extra_requires = {
     'build': ['Cython'],
     'service': ['requests', 'tornado', 'psutil', 'pyjwt'],
-    'db': ['sqlalchemy<2', 'psycopg2-binary', 'pymysql', 'elasticsearch', 'pymongo', 'redis>4.2.0'],
+    'db': ['sqlalchemy', 'psycopg[binary]', 'pymysql', 'elasticsearch', 'pymongo', 'redis'],
     'stream': ['confluent_kafka'],
     'data': ['pandas'],
     'report': ['openpyxl>=3', 'XlsxWriter'],