try this : as a solution ;
i already update your code to take in considerations the type of the age only an integer
name = input("What's your name? ")
print("Nice to meet you " + name + "!")
while True:
try:
age = int(input("Your age? "))
break
except Exception as e:
print("please enter a valid age")
print("So, you are already " + str(age) + " years old, " + name + "!")
if age > 50:
print ("you are to old thx ")
else:
print ("nice age using your apportunity ")
