我不知道为什么我的代码会继续出错

Question

def square(10):
    """returns the square of a number"""
    squared = 10**2
    print "%d squared is %d." % (10, squared)
    return squared

一直在说

  File "python", line 1
    def square(10):
                ^
SyntaxError: invalid syntax

我该如何解决？

Answer 1

您使用了文字10，您应该使用参数名称。看到： http://www.tutorialspoint.com/python/python_functions.htm

你真正想要的基本上是：

def square(x):
    """returns the square of a number"""
    squared = x**2
    print "%d squared is %d." % (10, squared)
    return squared

square(10)