Python-根据列表位置匹配对象

Question

I am trying to match objects in a list, based on their positions in a list. The position in the list is always the same for a specific CSV, but varies based on client.

I have a Dictionary that contains 5 clients and the column in the CSV where the data is contained:

d = {'Client1':{
                'file1DataPositions':[1,3,5,6,9],
                'file2DataPositions':[2,4,5,7,8]},
     'Client2':{
                'file1DataPositions':[3,4,5,6,7],
                'file2DataPositions':[1,5,7,8,9]},
     'Client3':{
                'file1DataPositions':[2,6,7,8,9],
                'file2DataPositions':[1,2,7,8,9]},
     'Client4':{
                'file1DataPositions':[2,3,4,6,6],
                'file2DataPositions':[1,3,5,7,9]},
     'Client5':{
                'file1DataPositions':[2,4,6,8,9],
                'file2DataPositions':[5,6,7,8,9]}
     }

I have a populated, embedded list (a parsed CSV):

l = [['data1','123','ABC','CompanyName','Employee1','15','123 Notareallstreet','Bobs Trucks','Newyork'],
     ['data2','456','DEF','CompanyName','Employee2','15','123 Notareallstreet','Bobs Trucks','Newyork'],
     ['data3','789','GHI','CompanyName','Employee3','15','123 Notareallstreet','Bobs Trucks','Newyork'],
     ['data4','012','JKL','CompanyName','Employee4','15','123 Notareallstreet','Bobs Trucks','Newyork']]

Based on the position of the index in the embedded list, I would like to check to see if the index matches:

def iterationTest():
    for item in l:
        for lis in item:
            if lis.index() == d['Client1']['file1DataPositions']:
                print('Match Found')

iterationTest()

When I run this, I get an: "index() takes at least 1 argument (0 given)" error.

Is there a correct way to do what I am trying to do?

Answer 1

Use enumerate() :

def iterationTest():
    for item in l:
        for idx, lis in enumerate(item):
            if idx in d['Client1']['file1DataPositions']:
                print('Match Found')

iterationTest()

This will iterate over each lis in item , and at each stage in the loop it will provide access to both lis and its index, idx (which you use for comparison).

Answer 2

what you exactly trying to do? you are looking for index of list? i'm guessing you are trying to do this:

d = {'Client1':{
                'file1DataPositions':[1,3,5,6,9],
                'file2DataPositions':[2,4,5,7,8]},
     'Client2':{
                'file1DataPositions':[3,4,5,6,7],
                'file2DataPositions':[1,5,7,8,9]},
     'Client3':{
                'file1DataPositions':[2,6,7,8,9],
                'file2DataPositions':[1,2,7,8,9]},
     'Client4':{
                'file1DataPositions':[2,3,4,6,6],
                'file2DataPositions':[1,3,5,7,9]},
     'Client5':{
                'file1DataPositions':[2,4,6,8,9],
                'file2DataPositions':[5,6,7,8,9]}
     }
l = [['data1','123','ABC','CompanyName','Employee1','15','123 Notareallstreet','Bobs Trucks','Newyork'],
     ['data2','456','DEF','CompanyName','Employee2','15','123 Notareallstreet','Bobs Trucks','Newyork'],
     ['data3','789','GHI','CompanyName','Employee3','15','123 Notareallstreet','Bobs Trucks','Newyork'],
     ['data4','012','JKL','CompanyName','Employee4','15','123 Notareallstreet','Bobs Trucks','Newyork']]

def iterationTest(Preview=True):
    for clientKey , clientValue in d.iteritems():
        for dataKey, dataValue in clientValue.iteritems():
            if Preview:
                print "Data Position: %s"%dataKey
            for eachnum in dataValue:
                if eachnum <= len(l[0])-1:
                    if Preview:
                        print "Match Number: %s"%eachnum
                        print "Number Value: %s"%l[0][eachnum]
                        print "------------------------------"
            if Preview:
                print "=============================="

iterationTest()