I just started using Python today for my class and one of my problems is cubing a number in Python. I know the way to do it is x^3, but that doesn't work in Python. I was just wondering how I would be able to do that.
This is what I tried so far, but as you can see, I keep getting syntax errors:
>>> def volume (v) :
return v^3
volume(4)
SyntaxError: invalid syntax
Python uses the ** operator for exponentiation, not the ^ operator (which is a bitwise XOR):
>>> 3*3*3
27
>>>
>>> 3**3 # This is the same as the above
27
>>>
Note however that the syntax error is being raised because there is no newline before volume(4):
>>> def volume(v):
... return v**3
... volume(4)
File "<stdin>", line 3
volume(4)
^
SyntaxError: invalid syntax
>>>
>>> def volume(v):
... return v**3
... # Newline
>>> volume(4)
64
>>>
When you are in the interactive interpreter, the newline lets Python know that the definition of function volume is finished.
Actually different symbols mean different things in different programming languages. In some languages, ^ means exponent, but in Python, the exponent operator symbol is **:
>>> 3**3
27
The ^ symbol is for the bitwise 'xor' operation:
>>> 1^1
0
>>> 1^0
1
Read the documentation on the operator module to see how Python really treats these symbols.
Use the * key twice
def volume (v) :
return v**3
volume(4)
You can use the ** operator to do exponential calculations.
def volume(v)
return v**3
Use two asteric's between the number and the power. Ex 2^5 in math is 2**5 in python. You can also do something along the lines of math.pow(100, 2) = 10000.0.
The Best way to do this is
cube = lambda x: x**3
cube(3)
but one another solution be like which result in the same
cube = lambda x: x*x**2
cube(3)
one another alter solution be like
math.pow(3,3)
all will return the cube of number 3.
def volume(v):
result = v * v * v
return result
print("enter a number to be cubed: ")
print(volume(int(input())))
or
def volume(v):
result = v ** 3
return result
print("enter a number to be cubed: ")
print(volume(int(input())))
Your syntax is attempting to use ^ as the exponentiation operator, but you should be using the ** operator. For example:
>>> def volume (v) :
... return v ** 3
...
>>> volume(4)
64
I have tried this with using a simple print function, you can calculate the cube by using ** operators
a = int(input())
b = int(input())
print(a**3)
print(b**3)
