python learning Notes (xxii) - generate test data, getattr function

1 , generating test data

Import faker 

f = faker.Faker (locale = ' zh-CN ' ) # China Data 

Print (f.credit_card_number ()) # credit card number 
Print (f.email ()) # E-mail 
Print (f.phone_number ()) # phone number 
Print (f.ssn ()) # identification number 
Print (f.user_name ()) # random user name

2 , getattr () function

getattr () function returns the value of an object attribute.

getattr syntax:

getattr(object, name[, default])

ps: default can specify the default value, returns to the default value when the object attribute does not exist

class Stu:
     DEF eat (Self):
         Print ( ' eat !!!!!! ' ) 

nn = Stu () 
Result = getattr (nn, ' eat ' ) # objects to eat nn properties 
Result () # attribute method plus () can perform 
Print (Result) # <Method Stu.eat of bound <__ main __. Stu AT 0x01E6C030 >> Object 

# according to the second 
L = [l, 2,3 ] 
APD = getattr (L, ' the append ' ) # Get the append attribute list l 
Print ( ' APD ', APD) # APD <Built-in of the append Method AT 0x01E68738 Object List> 
APD ( ' Nana ' ) # corresponds l.append ( 'Nana') 
Print (L) # [. 1, 2,. 3, 'Nana'] 
Print (the hasattr (L, ' the append ' )) # determines that there are no objects to this method, returns True