Python Traceback(最近调用最后)错误

Question

我已经开始编码大约一个星期了，在练习创建一个形状计算器时，我遇到了这样的错误:

Traceback (most recent call last):
File "python", line 4
if option = 'C':
          ^
SyntaxError: invalid syntax

代码如下:

print "The Calculator has been launched"
option = raw_input ("What shape is your object?     Enter C for circle or T 
for Triangle.")
if option = 'C': 
    radius = float (raw_input ("What is the radius of your circle?") )
    area_1 = 3.14159 * ( radius ** 2)
    print area_1 

elif option = 'T':
    base = float (raw_input ("What is the base of the triangle?"))
    height = float (raw_input ("What is the corresponding height of the 
    triangle?"))
    area_2 = (base * height) * 1/2
    print area 
else :
    print "Please, enter a valid shape" 

如果有人能解释错误的原因，我将不胜感激。

谢谢!

Answer 1

比较时必须使用==。 = 仅用于赋值。

因此在您的示例中，该行应该是

if option == 'C':