error handling pyhtin

1import traceback
2
3dict = {'a':3,'b':5,'c':8}
4try:
5  print(dict[q])
6 
7except:
8  traceback.print_exc()
9  
10# This will trace you back to the line where everything went wrong. 
11# So in this case you will get back line 5    
12  
13  

1# taking input from the user 
2try:
3    age = int(input("Please enter your age: "))
4    print(age)
5except:
6    print("please enter a number instead! ")
7    print('bye')
8
9
10# if you wanna ask their age until they enter the correct number use While Loop
11while True:
12    try:
13        age = int(input("Please enter your age: "))
14        print(age)
15    except:
16        print("please enter a number instead! ")
17    else:
18        break
19
20