如何优化代码: lstID = Server.objects.filter(Q(intnumber__startswith=leftID)).values_list('intnumber',flat=True).order_by('intnumber') lstID= list(lstID) n = len(lstID) if n == 0: new_intnumber=leftID + '0001' elif lstID[0] != leftID + '0001': new_intnumber = leftID + '0001' elif n == 1 and lstID[0] != leftID + '0001': new_intnumber = leftID + '0001' elif n == 1 and lstID[0] == leftID + '0001': new_intnumber = leftID + '0002' else: for i in range(n-1): print('i=',i) #i的取值范围是从0到n-2,即循环n-1次 if int(lstID[i])+1 == int(lstID[i+1]): break elif int(lstID[i])+1 != int(lstID[i+1]): print('lstID[i]的i=',i,lstID[i]) new_intnumber= int(lstID[i])+1 print('循环内=',new_intnumber) break new_intnumber= int(lstID[n-1])+1 print('最后一个数+1=',new_intnumber)
时间: 2024-02-14 13:15:56 浏览: 60
首先,在循环中使用print语句是不必要的,因为它会使代码变慢。建议使用logging模块来进行调试和记录。
其次,可以将if语句中的重复条件合并,以减少重复判断,提高效率。
最后,可以使用Python内置的函数来简化代码,例如min()和max()函数可以用来找到列表中的最小和最大值。
下面是优化后的代码:
```
lstID = Server.objects.filter(Q(intnumber__startswith=leftID)).values_list('intnumber',flat=True).order_by('intnumber')
lstID = list(lstID)
n = len(lstID)
if n == 0:
new_intnumber = leftID + '0001'
elif lstID[0] != leftID + '0001':
new_intnumber = leftID + '0001'
elif n == 1 and lstID[0] == leftID + '0001':
new_intnumber = leftID + '0002'
else:
for i in range(n-1):
if int(lstID[i])+1 != int(lstID[i+1]):
new_intnumber = int(lstID[i])+1
break
else:
new_intnumber = int(lstID[n-1])+1
```
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