import pandas as pd
import pyodbc

server = "servername"
db = "databasename"
username = "username"
password="password"
con = pyodbc.connect('Driver={SQL Server Native Client 11.0};SERVER=' + server + ';DATABASE=' + db+';User='+
                     username+';Password='+password+';Trusted_Connection=yes;')
query = "your query"
df = pd.read_sql(query, con)
print(df)