def关键字似乎总是给我一个错误反馈

Question

def my_function(country = "Norway"):
  print("I am from " + country)

my_function("Sweden")
my_function("India")
my_function()
my_function("Brazil")

  

语法错误：语法无效

Answer 1

您的代码应该可以正常工作。

我在下面的PyCharm IDE中尝试过，它为我工作。

def my_function(country = "Norway"):
    print("I am from " + country)
my_function("Sweden")

# Output = I am from Sweden

在命令行中尝试以下代码：

C:\Users\OmkarJ>python
Python 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:57:36) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> def my_function(country = "Norway"):
...     print("I am from " + country)
...
>>> my_function("Sweden")
I am from Sweden
>>> my_function("India")
I am from India
>>>