python functions, classes, methods (Mushishi "selenium3 automated testing combat - based on the Python language Notes 4")

1. Function

 

# Defined function: 
DEF the Add (A =. 1, B = 2):   # A =. 1, B = 2 for the default parameters, calculated according to the default parameters does not have a value 
    return A + B 

# calling function: 
C1 = the Add () 
C2 the Add = (. 3,. 5 )
 Print (C1)
 Print (C2)

 

 

2. classes and methods

• Classes and methods

  # Define a class 
  class Myclass (Object):
       # class defines methods described below, when the difference function, the first argument must be declared, usually with self, self need not be provided in the call value 
      DEF say_hello (self, name):
           return  " Hello, " + name 
  
  # calling class 
  MC = Myclass ()
   Print (mc.say_hello ( " Kite " ))

• Initialization method

  # Declare when creating a class initializer __ the __init () 
  
  class A:
       # initialization statement 
      DEF  the __init__ (Self, A, B): 
          self.a = int (A) 
          self.b, = int (B) 
  
      # custom methods 
      DEF the Add (Self):
           return self.a + self.b, 
  
  # requires initialization parameters passed when calling class 
  COUNT A = (. 4,. 5 )
   Print (count.add ())

• inherit

  # Class A Class B inherits 
  class B (A):
       DEF Sub (Self, A, B):
           return A - B
   Print (B (2,. 3) .add ())   # 2+. 3. 5 =