function Function - function definitions and parameters

_ * _ Coding #: UTF-8 _ * _ 
# Author: Wang Dian-yuan 
# Date: 2019/12/21 
# subrouting function function \ Procedure 
# function meaning 
    # 1. reduce code duplication 
    # 2 more scalable 
    # 3. Keep the code consistency 
DEF log # (log_text): 
# = F Open ( 'log.txt', 'A') 
# f.write ( '% S 2019-10-25 15:30', log_text%) 
# f.close () 
# Print ( '*************************************** function1') 
# = F Open ( 'log.txt', 'A') 
# f.write ( 'Exec function1 2019-10-25 15:30') 
# F .close () 
# 
# Print ( '*************************************** function2') 
# = F Open ( 'log.txt', 'A') 
# f.write ( 'Exec function2') 
# f.close () 
# 
# Print ( '*************************************** Function3') 
# = F Open ( 'log.txt', 'a')
# f.write('exec function3')
# F.close () 

format # function: def function_name (): function names are case sensitive 
# DEF show_shopping (): 
# Print ( 'the OK') 
# Print (show_shopping) 

# DEF the Add (A): 
# Print (A ) 
# # print (B) 
# the Add (. 1,. 3) 

# DEF print_info (name, Age, Sex = 'MALE'): # default parameter value set up, the default parameters and the other parameters constant on the back 
# print ( '% S:% D: S%'% (name, Age, Sex)) 
# # print_info ( 'derywong', 18 is) must parameter # 
# # print_info (age = 39, name = 'derywong') # keyword parameter 
# Print ( 'Dery', 30) 
# Print ( 'Wong', 35) 
# Print ( 'aliex', 45, 'FEMALE') 

# variable length parameter * args 
# DEF the Add (* args): 
# # Print (args ) 
# = SUM 0 
# for i in args:
#         sum += i
Print # (SUM) 
# the Add (. 1, 2,. 3,. 4) 

# ** kwargs variable length parameter variable length * args parameter received no named parameters, on the left must have received ** args named parameters, must be placed on the right 
def print_info (Sex = 'MALE', * args, ** kwargs): 
    Print (Sex) 
    Print (args) 
    for I in kwargs: 
        Print ( '% S:% S'% (I, kwargs [I])) 
print_info ( 'Dery', l, 2,3, name = 'Wong') 
# print_info ( 'nihoa', 18 is, name = 'Dery', Job = 'the IT') 

DEF FUNC (name, Age = 22 is, args *, * * kwargs):