Automate Boring Stuff with Python Collatz Function

# Write a function named collatz() that has one parameter named number. If number is odd or even
#number is even, then collatz() should print number // 2 and return this value.
#If number is odd, then collatz() should print and return 3 * number + 1.

# First example def of collatz()
def collatz( number ):
    if number % 2 == 0:
        return " it is even number "
    else:
        return  "it is an odd number"
number = int(input("input a number: "))
print( collatz( number ) )

# Second example def of collatz()
def collatz( number ):
    if number % 2 == 0:
        return " it is even number " , float(number / 2)
    else:
        return  "it is an odd number" , 3*number + 1
number = int(input("input a number: "))
print( collatz( number ) )