[英]How to shutdown the loop and print error if coroutine raised an exception with asyncio?
[英]How to continue loop and log error when validation error is raised in exception?
我对 python 很陌生,但我创建了一个小脚本来在 postgres 中插入行,以及一个存储股票价格的表。 该表对日期和股票代码具有唯一约束,以确保每天每个股票代码仅插入一个价格。 我希望脚本跳过插入并继续执行其余操作,但我不知道如何在触发异常块时使循环继续。
Python脚本如下:
def createConnection(db="db", user="john", password='doe', host='host', port=5432):
conn = psycopg2.connect(
database=db, user=user, password=password, host=host, port=port)
return conn
def insertNewPrices(df):
conn = createConnection()
cur = conn.cursor()
for row in df.head().itertuples(index=False):
try:
print(row)
cur.execute(
"INSERT INTO daily_price (price_date, ticker, close_price) VALUES (%s, %s,
%s)", row)
except psycopg2.IntegrityError as e:
print("something went wrong")
print(e)
continue
conn.commit()
conn.close()
引发的错误:
psycopg2.errors.UniqueViolation: duplicate key value violates unique constraint "daily_price_ticker_price_date_key"
DETAIL: Key (ticker, price_date)=(EQUINOR, 1990-02-28) already exists.
你在 try 语句之外有 insert 语句。 你能从外面取下插件吗,你应该没问题。
for row in df.head().itertuples(index=False):
#cur.execute(
# "INSERT INTO daily_price (price_date, ticker, close_price) VALUES (%s, %s, %s)",
row)
try:
print(row)
cur.execute(
"INSERT INTO daily_price (price_date, ticker, close_price) VALUES (%s, %s,
%s)", row)
except psycopg2.IntegrityError, psycopg2.errors.UniqueViolation) as e:
print("something went wrong")
print(e)
此外,您不需要在 except 语句的末尾继续作为它的最后一行。
除了检查特定错误之外,您还可以使用以下命令捕获所有错误和警告:
except (psycopg2.Error, psycopg2.Warning) as e:
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