Python Multiple key in a text file

Question

My Data is as below:

Name: Joe
Age: 26
Property: 1 of 3
Item : Car
Make: Toyota
Model: Corolla
Year:2006
Property: 2 of 3
Item : House
Address : new Street
Cost : 20000
Property: 3 of 3
Item: Stocks
Investment: 1000
Name: Blogg
Age: 28
Property: 1 of 2
Item : Bike
BikeMake: Harley
BikeModel: IronRod
BikeYear:2018
Property: 2 of 2
Item: Stocks
Investment: 2000

I need the result to look like below:

Name	Age	Property	Item	Make	Model	Year	Address	Cost	Investment	BikeMake	BikeMode	BikeYear
Joe	26	1 of 3	Car	Toyota	Corolla	2006
Joe	26	2 of 3	House				new Street	20000
Joe	26	3 of 3	Stocks						1000
Blogg	28	1 of 2	Bike							Harley	Ironrod	2018
Blogg	26	3 of 3	Stocks						2000

My code is currently

for line in t:
    print(line)
    key, _, value = line.partition(": ")
    if not value:    # separator was not found
        value = "NA"
    if "Name" in key:
        stuff[index] = {"Reference": [value]}  # Always use a list as vale
        current_key = index
        index += 1
    elif key not in stuff[current_key]:  # If key does not exist
        stuff[current_key][key] = [value]  # Create key with value in a list.
    else:
        stuff[current_key][key].append(value) 

My current results are being pivoted by the Name key (e.g)

Name	Age	Property	Item	Make	Model	Year	Address	Cost	Investment	BikeMake	BikeMode	BikeYear
Joe	26	1 of 3,2 of 3,3 of 3	Car,House,Stocks	Toyota	Corolla	2006	New Street	20000	1000
Blogg	28	1 of 2,2 of 2	Bike,Stocks						2000	Harley	IronRod	2018