Python 3.5 (11) function

Functional programming The most important thing is to enhance the reusability and readability of code

Ii. Definition and use

def 函数名(参数):  

     ...      函数体      ...

The definition of a function has the following main points:

• def: A keyword that represents a function
• Function name: the names of functions, which are called later by function name
• Function Body: A series of logical calculations in a function, such as sending a message, calculating the maximum number in [11,22,38,888,2], etc...
• Parameters: Providing data for the function body
• Return value: Once the function has finished executing, it can return data to the caller.

In the above points, it is more important to have parameters and return values:

There are three different parameters to the function:

• General parameters
• Default parameters
• Dynamic parameters

   #   ######### define function #########  #   name is called the formal parameter of function func, abbreviation: formal parameter  def   func (name):  print   name  #   ######### Execute function #########  #   func ( " Span style= "COLOR: #800000" >wupeiqi   " ) Normal parameters  

  def func (name, age =):        print"%s:%s" %(name,age)  #  Specify parameter func ('wupeiqi', +)#  Use default parameter func ('Alex') Note: Default parameters need to be placed at the end of the parameter list

Python 3.5 (11) function