PyCharm 缺少进口 package 的智能感知

Question

Python beginner here. Don't understand why intellisense for some psycopg2 objects doesn't work in PyCharm.

import psycopg2
from config import db_config
from datetime import datetime

conn = None
cursor = None

try:
    params = db_config
    conn = psycopg2.connect(**params)
    cursor = conn.cursor()


except (Exception, psycopg2.DatabaseError) as error:
    print(error)

finally:
    if conn:
        cursor.close()
        conn.close()
        print("connection closed")

cursor() method not offered:

cannot step into the definition here:

Do I have to somehow specify the types of the objects during declaration eg: cursor: cursor = None

Answer 1

This is what seems to be fixing the issue, but I'm not sure if this is the right way to go about this issue every time one needs intellisense from imported packages:

from psycopg2.extensions import cursor, connection
import psycopg2
from config import db_config
from datetime import datetime

conn: connection = None
cursor: cursor = None