1
我在使用函數啓動程序時無法連接到數據庫。如果我不用一個函數啓動它,它可以正常工作。 我的程序從serverlist.txt獲取一個計算機名,並在數據庫中查找它。然後它爲我提供該計算機的「位置ID」。如何與Pyodbc功能連接?
這個版本的作品:
import os
import shutil
import fileinput
import pypyodbc
def replaceid(servername):
try:
cursor = connection.cursor()
SQLCommand = ("SELECT Name, Location_ID "
"FROM dbo.I_Location " # table name
"with (nolock)"
"WHERE Name = ?")
Values = [servername]
cursor.execute(SQLCommand,Values)
results = cursor.fetchone()
if results:
print (" Name: " + results[0] + " Location ID: " + str(results[1]))
print (" ")
else:
print (" Location ID for " + servername + " does not exist.")
print (" ")
connection.close()
except:
print("Database is down or you are not connected to network.")
exit()
def grab(servername):
# copy config from remote computer
source = r'//' + servername + '/c$/Administrator/'
dest = "."
file = "Admin.config"
if os.path.isfile(os.path.join(source, file))
try:
shutil.copyfile(os.path.join(source, file), os.path.join(dest, file))
except:
print (" Local directory you are copying to does not exist.")
else:
pass
replaceid(servername)
os.system('cls' if os.name == 'nt' else 'clear')
array = []
with open("serverlist.txt", "r") as f:
for servername in f:
try:
connection = pypyodbc.connect('Driver={SQL Server};Server=mydbx;Database=WinOasis;Trusted_Connection=yes;')
except pypyodbc.Error as ex:
sqlstate = ex.args[0]
if sqlstate == '28000':
print ("You do not have access.")
grab(servername.strip())
當我添加在底部的start()函數,這是行不通的。它會移至例外情況,說 數據庫關閉或者您沒有連接到網絡。
import os
import shutil
import fileinput
import pypyodbc
def replaceid(servername):
try:
cursor = connection.cursor()
SQLCommand = ("SELECT Name, Location_ID "
"FROM dbo.I_Location " # table name
"with (nolock)"
"WHERE Name = ?")
Values = [servername]
cursor.execute(SQLCommand,Values)
results = cursor.fetchone()
if results:
print (" Name: " + results[0] + " Location ID: " + str(results[1]))
print (" ")
else:
print (" Location ID for " + servername + " does not exist.")
print (" ")
connection.close()
except:
print("Database is down or you are not connected to network.")
exit()
def grab(servername):
# copy config from remote computer
source = r'//' + servername + '/c$/Administrator/'
dest = "."
file = "Admin.config"
if os.path.isfile(os.path.join(source, file))
try:
shutil.copyfile(os.path.join(source, file), os.path.join(dest, file))
except:
print (" Local directory you are copying to does not exist.")
else:
pass
replaceid(servername)
def start():
# Option 1
os.system('cls' if os.name == 'nt' else 'clear')
array = []
with open("serverlist.txt", "r") as f:
for servername in f:
try:
connection = pypyodbc.connect('Driver={SQL Server};Server=mydbx;Database=WinOasis;Trusted_Connection=yes;')
except pypyodbc.Error as ex:
sqlstate = ex.args[0]
if sqlstate == '28000':
print ("You do not have access.")
grab(servername.strip())
start()
什麼是造成這種情況的任何想法?