如何将列表中的第一项设置为字典键，并将以下项设置为该键的值？

Question

Here is what I'm trying:

def dict1(filename):
        try:
            file_handle=open(filename,"r")
        except FileNotFoundError:
            return None
        newdict = {}
        for line in file_handle:
            list1 = line.split(",")
            (k, v) = list1
            newdict[k]] = v
        return newdict

The text file has lines like such:

cow 1,dog 1
john 1,rob 1,ford 1
robert 1,kyle 1,jake 1

I'm trying to create a dictionary like so:

{'cow 1': ['dog 1'],
 'john 1': ['rob 1','ford 1'],
 'robert 1': ['kyle 1, 'jake 1']}

The problem is in the (k,v), how can i set the k to the first item in the list, and the v to all items following it?

Answer 1

Using the csv module.

Ex:

import csv

result = {}
with open(filename) as infile:
    reader = csv.reader(infile)
    for row in reader:           #Iterate each row
        result[row[0]] = row[1:] #column 0 as key and others as value. 

print(result)

Output:

{'cow 1': ['dog 1'],
 'john 1': ['rob 1', 'ford 1'],
 'robert 1': ['kyle 1', 'jake 1']}