如何向 python 函数添加异常?
How to add exception to python function?
美好的一天。我在 python 上编写了一个应用程序,它从 Avaya PBX 收集呼叫日志并将它们写入 mysql 数据库。它运行良好,但有时 PBX 出于某种原因发送一个空字符串并且程序失败。我在下面附上屏幕和代码。我知道您需要将函数包装在异常中:try except,但我不明白该怎么做。请告诉我该怎么做。enter image description here
def write_db(item, *agrs):
connection = pymysql.connect(host='localhost',
user='acdr',
password='it8ejokd',
db='avaya_cdr',
charset='utf8mb4',
cursorclass=pymysql.cursors.DictCursor)
DBTBL = "cdr102019"
DBFLD = "Date_call, Time_call, `Sec_dur`, `clg_num_in_tag`, `dialed_num`, dep_called, dep_dialed"
dep_num_call = find_dep(item[3].replace(' ', ''))
name_dep_call = name_dep(dep_num_call)
dep_num_dial = find_dep(item[4].replace(' ', ''))
name_dep_dial = name_dep(dep_num_dial)
item.append(name_dep_call)
item.append(name_dep_dial)
item[1] = item[1] + "00"
try:
with connection.cursor() as cursor:
sql = "INSERT INTO "+DBTBL+" ("+DBFLD+") VALUES (%s,%s,%s,%s,%s,%s,%s)"
cursor.execute(sql, (item))
connection.commit()
finally:
connection.close()
# Задаем адрес сервера
SERVER_ADDRESS = ('', 5100)
# Настраиваем сокет
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind(SERVER_ADDRESS)
server_socket.listen(5)
print('server is running, please, press ctrl+c to stop')
# Слушаем запросы и пишем в db
while True:
connection, address = server_socket.accept()
data = connection.recv(1024)
if not(b'\x00\x00\x00' in data) and not(b'1370' in data):
str = data.decode("utf-8")
item=[str[0:6],str[7:11],str[12:17],str[18:33],str[34:57]]
print(item)
write_db(item)
connection.close()
您必须捕获异常,因此我们可以满足一些类型的需求,但为了确保让您起床 运行,您可以执行以下操作:)
try:
with connection.cursor() as cursor:
sql = (
"INSERT INTO "+DBTBL+" ("+DBFLD+") VALUES "
"(%s,%s,%s,%s,%s,%s,%s)"
)
cursor.execute(
sql,
(item),
)
connection.commit()
except Exception as e:
print("Error occurred: %s"% e)
finally:
connection.close()
这应该可以解决问题。我在这里使用了 try/except/else/finally 的所有四个元素,并简要说明了它们何时执行。
try:
with connection.cursor() as cursor:
sql = "INSERT INTO "+DBTBL+" ("+DBFLD+") VALUES (%s,%s,%s,%s,%s,%s,%s)"
cursor.execute(sql, (item))
except Exception: # If this code fails, ignore it
pass
else: # If the code inside 'try' succeeds, execute this code.
connection.commit()
finally: # Regardless of whether or not the code inside 'try' succeeds, execute this code
connection.close()
美好的一天。我在 python 上编写了一个应用程序,它从 Avaya PBX 收集呼叫日志并将它们写入 mysql 数据库。它运行良好,但有时 PBX 出于某种原因发送一个空字符串并且程序失败。我在下面附上屏幕和代码。我知道您需要将函数包装在异常中:try except,但我不明白该怎么做。请告诉我该怎么做。enter image description here
def write_db(item, *agrs):
connection = pymysql.connect(host='localhost',
user='acdr',
password='it8ejokd',
db='avaya_cdr',
charset='utf8mb4',
cursorclass=pymysql.cursors.DictCursor)
DBTBL = "cdr102019"
DBFLD = "Date_call, Time_call, `Sec_dur`, `clg_num_in_tag`, `dialed_num`, dep_called, dep_dialed"
dep_num_call = find_dep(item[3].replace(' ', ''))
name_dep_call = name_dep(dep_num_call)
dep_num_dial = find_dep(item[4].replace(' ', ''))
name_dep_dial = name_dep(dep_num_dial)
item.append(name_dep_call)
item.append(name_dep_dial)
item[1] = item[1] + "00"
try:
with connection.cursor() as cursor:
sql = "INSERT INTO "+DBTBL+" ("+DBFLD+") VALUES (%s,%s,%s,%s,%s,%s,%s)"
cursor.execute(sql, (item))
connection.commit()
finally:
connection.close()
# Задаем адрес сервера
SERVER_ADDRESS = ('', 5100)
# Настраиваем сокет
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind(SERVER_ADDRESS)
server_socket.listen(5)
print('server is running, please, press ctrl+c to stop')
# Слушаем запросы и пишем в db
while True:
connection, address = server_socket.accept()
data = connection.recv(1024)
if not(b'\x00\x00\x00' in data) and not(b'1370' in data):
str = data.decode("utf-8")
item=[str[0:6],str[7:11],str[12:17],str[18:33],str[34:57]]
print(item)
write_db(item)
connection.close()
您必须捕获异常,因此我们可以满足一些类型的需求,但为了确保让您起床 运行,您可以执行以下操作:)
try:
with connection.cursor() as cursor:
sql = (
"INSERT INTO "+DBTBL+" ("+DBFLD+") VALUES "
"(%s,%s,%s,%s,%s,%s,%s)"
)
cursor.execute(
sql,
(item),
)
connection.commit()
except Exception as e:
print("Error occurred: %s"% e)
finally:
connection.close()
这应该可以解决问题。我在这里使用了 try/except/else/finally 的所有四个元素,并简要说明了它们何时执行。
try:
with connection.cursor() as cursor:
sql = "INSERT INTO "+DBTBL+" ("+DBFLD+") VALUES (%s,%s,%s,%s,%s,%s,%s)"
cursor.execute(sql, (item))
except Exception: # If this code fails, ignore it
pass
else: # If the code inside 'try' succeeds, execute this code.
connection.commit()
finally: # Regardless of whether or not the code inside 'try' succeeds, execute this code
connection.close()