比较列表和列表列表时遇到问题

Question

I have a list of ints and a list of lists. I need to compare the two.

The list of lists has a name, and a set of ints. My list just has a set of ints.

I know that in python you can just say is list == list . However, the order the ints are in is import and in my list of lists I also have a name before the ints.

Example my list will be 4 1 6 while a list I need to compare it to will be bob 6 7 2 . I just need to compare the ints and if i compare 4 1 6 to 1 6 4 or 1 4 6 it would not compare.

I've tried using loops but am not getting the result I want.

chdnalist will be one list just a set of 3 ints. dnalist is a list of lists and one list will be bob, 4, 1, 3 the next will be alice 9, 6, 4 .

I need to compare the three ints from chdnalist to the three ints in dna list and print the name if it matches including order.

Here is the set of loops I was trying. Currently the s loop doesn't increment.

def compare(dnalist, chdnalist):
    for i in range(1, len(dnalist)):
        for s in range(1, len(dnalist[1])):
            print (s)
            if (chdnalist[i - 1] != dnalist[i][s]):
                break
            if (s == len(dnalist[1])):
                print (dnalist[i][0])
                return
            else:
                print ("No Match")
    return

This is a copy of the csv file that becomes my list of lists (dnalist).

name,AGATC,AATG,TATC
Alice,2,8,3
Bob,4,1,5
Charlie,3,2,5

I happen to know that the text file I use to create the list I compare it to when it has been translated turns into 4,1,5 (chdnalist). However, when I go to compare them the s loop doesn't iterate. It only runs once.

Answer 1

Use spread assignment to split the name from the ints when iterating over dnalist . Then you can use == to compare the list of ints.

Also, No match should only be printed at the end of the loop, not during each iteration, since there could be a later match.

Since you read dnalist from a CSV file, everything will be read as strings, not integers. You'll need to convert them to integers before comparing.

def compare(dnalist, chdnalist):
    for name, *dna in dnalist:
        dna = list(map(int, dna))
        if dna == chdnalist:
            print(name)
            return
    print("No match")

DEMO