python - 요청 및 psycopg2를 사용하여 Postgres에서 Json 생성/삽입

그냥 PostgreSQL 와 프로젝트를 시작했다 . Excel에서 데이터베이스로 도약하고 싶습니다. 생성하고 삽입해야합니다. 일단 이것을 실행하면 업데이트로 전환해야하므로 현재 데이터를 계속 덮어 쓰지 않습니다. 연결이 작동하는 것을 알고 있지만 다음과 같은 오류가 발생합니다.

내 오류는 : TypeError: not all arguments converted during string formatting

#!/usr/bin/env python
import requests
import psycopg2
conn = psycopg2.connect(database='NHL', user='postgres', password='postgres', host='localhost', port='5432')
req = requests.get('http://www.nhl.com/stats/rest/skaters?isAggregate=false&reportType=basic&isGame=false&reportName=skatersummary&sort=[{%22property%22:%22playerName%22,%22direction%22:%22ASC%22},{%22property%22:%22goals%22,%22direction%22:%22DESC%22},{%22property%22:%22assists%22,%22direction%22:%22DESC%22}]&cayenneExp=gameTypeId=2%20and%20seasonId%3E=20172018%20and%20seasonId%3C=20172018') 
data = req.json()['data']
my_data = []
for item in data:
    season = item['seasonId']
    player = item['playerName']
    first_name = item['playerFirstName']
    last_Name = item['playerLastName']
    playerId = item['playerId']
    height = item['playerHeight']
    pos = item['playerPositionCode']
    handed = item['playerShootsCatches']
    city = item['playerBirthCity']
    country = item['playerBirthCountry']   
    state = item['playerBirthStateProvince']
    dob = item['playerBirthDate']
    draft_year = item['playerDraftYear']
    draft_round = item['playerDraftRoundNo']
    draft_overall = item['playerDraftOverallPickNo']
    my_data.append([playerId, player, first_name, last_Name, height, pos, handed, city, country, state, dob, draft_year, draft_round, draft_overall, season])
cur = conn.cursor()
cur.execute("CREATE TABLE t_skaters (data json);")
cur.executemany("INSERT INTO t_skaters VALUES (%s)", (my_data,))

[[8468493, 'Ron Hainsey', 'Ron', 'Hainsey', 75, 'D', 'L', 'Bolton', 'USA', 'CT', '1981-03-24', 2000, 1, 13, 20172018], [8471339, 'Ryan Callahan', 'Ryan', 'Callahan', 70, 'R', 'R', 'Rochester', 'USA', 'NY', '1985-03-21', 2004, 4, 127, 20172018]]