Saving an nested list into a text file

Question

Problem 1: I want to create a program that gathers the Name, Age and Year Group from a person. I then want to save this into a nested loop.

AD = [["Name","Age","Year"],["Mark","15","11"]]

Inp = input("Name:")
AD.append(Inp)

Inp = input("Age:")
AD.append(Inp)

Inp = input("Year:") 
AD.append(Inp)

print(AD)

So I tried this...

Name:Jack
Age:14
Year:10
[['Name', 'Age', 'Year'], ['Mark', '15', '11'], 'Jack', '14', '10']
>>> 

I want the result to look like...

Name:Jack
Age:14
Year:10
[['Name', 'Age', 'Year'], ['Mark', '15', '11'], ['Jack', '14', '10']]
>>> 

Problem 2: I wish to then save and read from a File.

AD = [["Name","Age","Year"],["Mark","15","11"]]

Inp = input("Name:")
AD.append(Inp)

Inp = input("Age:")
AD.append(Inp)

Inp = input("Year:")
AD.append(Inp)

File = open("Details.txt","w")
File.write(AD)
File.close()

print(AD)

It then comes up with the problem of "write()" only using strings. How can easily save this information so when I'm given a name I can use it to find the 2 numbers related to it?

Thanks <3

Answer 1

Problem 1:

AD = [["Name","Age","Year"],["Mark","15","11"]]

name = input("Name:")
age = input("Age:")
year = input("Year:") 

AD.append([name, age, year])
print(AD)

Problem 2:

writing

with open('Details.txt','w') as f:
    f.write('\n'.join([','.join(person) for person in AD]))

reading

with open('Details.txt', 'r') as f:
   lines = f.readlines()
   AD = {}
   for line in list(lines)[1:]:
       name, age, year = line.split(',')
       AD[name] = [age, year]

name = input('Wich person do you want to squery? ')
age, year = AD[name]
print('This person has age {0} and year {1}'.format(age, year))

Answer 2

If you don't mind to save as a CSV file, then you can create a Panda data frame with 3 columns using these lists and then save as a CSV file. Later you can read the CSV file and fetch the values of "Age" and "Year" columns based on the value in "Name" column