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python tip : zip-hqtmit的博客
source link: http://blog.51cto.com/13606158/2073520
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python tip : zip
目标:
由python orm model.objects.all().values("id")
获取到queryset 格式 [(1,),(2,),(3,)]
转换为格式 (1,2,3) ,以便在jinja2模版中调用
#!/usr/bin/env python3
# -*- coding:utf-8 -*-
# info:
list1=[5,5,6]
list2=[1,2,3]
zipresult=zip(list1,list2)
print("1. zipresult: %s"%zipresult)
listresult=list(zip(list1,list2))
print("2. listreult: %s"%listresult)
### zip(*list)方式抽取,抽取后需要定位【0】
orilist_from_listresult=list(zip(*listresult))
print("3. orilist_from_listresult: %s"%orilist_from_listresult)
ori_list1=orilist_from_listresult[0]
ori_list2=orilist_from_listresult[1]
print("4. ori_list1: %s "%(ori_list1,))
print("5. ori_list2: %s 类型:%s"%(ori_list2,type(ori_list2)))
结果
补充
######################
########################
另一个例子
#/usr/bin/env python3
a = [
['u1', 'u2', 'u3'], # username
['p1', 'p2', 'p3'], # password
[0, 2, 3], # count 已错误次数
]
b=list(zip(*a))
c=list(zip(*b))
print(b)
print(c)
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