How to use while loop for exception handling?

Question

try:
age=int(input("How old are you?: "))
except ValueError:
age=int(input("Please enter a number: "))

#If user make a mistake for the second time , it will not work

#I know the isdigit() method , But need some thing for floats too.

Answer 1

while True:
try:
print( 'Enter a number: ' )
val = float( input() )
print( f'Input given {val}' )
break
except ( TypeError, ValueError ):
continue
except EOFError:
break

Answer 2

I mean can we write a code like this?:

while ValueError:
age=int(input("Enter a number: "))

Answer 3

Loop input does not work in the code playground.
Maybe, you should separate the logic of initializing situation and exception.

age = input("How old are you?: ")
while True:
if age.isdigit():
age = int(age)
break
else:
age = input("Enter a number: ")