CODEWITHSUNDEEP
pythontkintercalculatorsquare-root
Silka
Silka

Reputation: 304

Making a square root for python calculator

I am new to Python and writing an engineering calculator on it. But i can't make a square root function currently. For example - this one show me an error "TypeError: unsupported operand type(s) for /: 'int' and 'str' ". Do you have any ideas how to make it work properly? 

    def square_root(self, number=1):
        e.delete(0, END)
        self.value = float(self.value ** (1/number))
        e.insert(0, self.value)

button_root = Button(gui, text="√", padx=40, pady=40, command=lambda: calculus.square_root(""))

button_root.grid(row=2, column=5)

Upvotes: 0

Views: 931

Answers (1)

Gwenn
Gwenn

Reputation: 534

The problem is exactly what the error says: you're passing a str ("") as your number for calculus.square_root. Change this to an int or float so that 1/number can be evaluated. Also, you might want to check for cases when number equals 0, as dividing by zero will lead to a ZeroDivisionError.

Upvotes: 2

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