如何在Python中处理中断数组? [英] How to process break an array in Python?

问题描述

我想使用双精度数组.但是我仍然做不到.这就是我所做的.

I would like to use a double array. But I still fail to do it. This what I did.

Folder = "D:\folder"
Name = ['gadfg5', '546sfdgh']
Ver = [None, 'hhdt5463']
    for dn in Name :
        for dr in Ver :
            if dr is None:
                Default = "asbsda"
                Path = os.path.join(Folder, Default)
                print(Path)
            else:
                Path = os.path.join(Folder, dr, dn)
                print(Path)

它返回此:

D:\folder\gadfg5\asbsda
D:\folder\gadfg5\asbsda
D:\folder\gadfg5\asbsda
D:\folder\546sfdgh\hhdt5463

但是我对输出的期望是:

But my expectation of the output is:

D:\folder\gadfg5\asbsda
D:\folder\546sfdgh\hhdt5463

任何人都可以给我建议或想法.谢谢.

Anyone can give me advice or idea please. Thank you.

推荐答案

您发布的代码输出为:

D:\Folder\asbsda
D:\Folder\hhdt5463\gadfg5
D:\Folder\asbsda
D:\Folder\hhdt5463\546sfdgh

这是可以预期的，因为您要遍历两个数组，每个数组都有2个元素，并给出4种组合:

it is expected because you iterate through both arrays that has 2 elements each and that gives 4 combinations:

gadfg5&没有

gadfg5&hhdt5463

546sfdgh&没有

546sfdgh&hhdt5463

希望您能理解

要获得所需的结果，请尝试使用zip:

To get the desired result try using zip:

Folder = "D:\Folder"
Name = ['gadfg5', '546sfdgh']
Ver = [None, 'hhdt5463']
for dn, dr in zip(Name, Ver): # get each element of Name and Ver in sequence
    if dr is None:
        Default = "asbsda"
        Path = os.path.join(Folder, dn, Default)
        print(Path)
    else:
        Path = os.path.join(Folder, dn, dr)
        print(Path)

Zip将每个数组的每个元素组合成一个元组，并返回一个元组数组以迭代遍历 zip([a，b，c]，[1,2,3])->[(a，1)，(b，2)，(c，3)]

Zip combines each element of each of the array to a tuple and return an array of tuples to iterate through, zip([a,b,c], [1,2,3]) -> [(a,1),(b,2),(c,3)]

或枚举:

Folder = "D:\Folder"
Name = ['gadfg5', '546sfdgh']
Ver = [None, 'hhdt5463']
for idx, dn in enumerate(Name): # get index and element of Name
    if Ver[idx] is None:
        Default = "asbsda"
        Path = os.path.join(Folder, dn, Default)
        print(Path)
    else:
        Path = os.path.join(Folder, dn, Ver[idx])
        print(Path)

enumerate为可迭代对象添加一个计数器，并为数组的每个元素提供索引.

enumerate adds a counter to your iterable and gives you each element of the array with its index.

输出:

D:\Folder\gadfg5\asbsda
D:\Folder\546sfdgh\hhdt5463

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