CODEWITHSUNDEEP
pythonpython-3.x
mhisham
mhisham

Reputation: 123

Why am I getting TypeError: cannot unpack non-iterable builtin_function_or_method object?

I am new to coding and I am starting with python. I am trying to make a method that will take an equation and solve for an unknown variable. It works for just one equation (one operator) but didn't work when I tried to make it return value based on an operator.

This worked:

def solveforx(y):
    x, add, num1, equal, num2 = y.split()

    # convert the strings into ints
    num1, num2 = int(num1), int(num2)
    # convert the result into a string and join it to the string "x = "
    return "x = "+ str(num2 - num1)

print(solveforx("X + 5 = 9"))

This didn't:

def solveforx(y):
    x, op, num1, equal, num2 = y.split

    num1, num2 = int(num1), int(num2)

    if op == "+":
        return "x = " + str(num2 - num1)
    elif op == "-":
        return "x = " + str(num1 + num2)
    elif op == "*":
        return "x = " + str(num2/num1)
    elif op == "/":
        return "x = " + str(num1*num2)
    else:
        return "wrong operator"

print(solveforx("X + 5 = 9"))

TypeError: cannot unpack non-iterable builtin_function_or_method object

Upvotes: 5

Views: 13017

Answers (1)

Corentin Pane
Corentin Pane

Reputation: 4943

You forgot the parentheses after y.split, so you tried to unpack the method split instead of its actual result.

It should be

x, op, num1, equal, num2 = y.split()

Upvotes: 5

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