Area Calculator

def calc_area():
    _input_ = input('Enter the shape you want to calculate area of (Triangle/Square/Rectangle/Rhombus/Trapezoid): ')
    area = 0
    if _input_ == 'Triangle':
        base = int(input('Enter the value of base: '))
        height = int(input('Enter the value of height: '))
        area = area + (0.5 * base * height)
    elif _input_ == 'Square':
        side = int(input('Enter the value of side: '))
        area = area + (side ** 2)
    elif _input_ == 'Rectangle':
        length = int(input('Enter the value of length: '))
        width = int(input('Enter the value of length: '))
        area = area + (length * width)
    elif _input_ == 'Rhombus':
        diagonal_1 = int(input('Enter Rhombus First Diagonal: '))
        diagonal_2 = int(input('Enter Rhombus Second Diagonal: '))
        area = (diagonal_1 * diagonal_2) / 2
    elif _input_ == 'Trapezoid':
        height = int(input('Height of trapezoid: '))
        base_1 = int(input('Enter Trapezoid first base: '))
        base_2 = int(input('Enter Trapezoid second base: '))
        area = ((base_1 + base_2) / 2) * height
    else:
        print('Enter a valid shape')
    print(area)

calc_area()