[Python] TypeError: unsupported operand type(s) for ** or pow(): 'str' and 'int' with Python3...

My Python3 code

def ask():

while True:
try:
n = input('Input an integer: ')
except:
print ('An error occurred! Please try again!')
continue
else:
break


print ('Thank you, you number squared is: ', n**2)


Why do I got error if I want to take a square of number?

TypeError: unsupported operand type(s) for ** or pow(): 'str' and 'int'


From command line no problems

>>> 3**2
9

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