How to solve this code

Question

Contact management system making
https://code.sololearn.com/cVAklRhtVn0E/?ref=app

Answer 1

For the concatenation in print statement has to be a string:

str(age)

Answer 2

#1
print(name ,"is",age ,"years old")
#2
print(f'{name} is {age} years old')

Answer 3

Tnx