Use of *args and **kargs in big talk python

For beginners, see *args and **kargs on the head of the big, in the end what they are useful, how to use? This article will uncover the mysteries of variable parameters for you.

1.*args essence is the parameter passed into the function, stored in the variable args of the tuple type

def Fun_var_args (farg, *args):      print"arg:", Farg        for inch args:           Print " Other arg: " , Valuefun_var_args ("i", 313

2. The second scenario:

def fun_input_list (VAR1,VAR2,VAR3):     Print var1,var2,var3var_list=["second", 3]fun_input_list (1,*var_list )1 Second 3

The essence of 3.**kargs is to store the parameters and values of the function in the Kargs variable of the dictionary type.

def Fun_var_kargs (farg,**Kargs):    print"firsr value%s"% Farg      for inch Kargs.keys ():         Print Kargs[key]fun_var_kargs (1,var1="second", var2=35,var3=" Third "  1secondthird35

4.**kargs's second usage scenario

def fun_input_dic (var1,var2=2,var3=3):    print  var1,var2,var3dic_input={ " var2 ": 2,"var3":"third"}fun_input_dic ( 1,**dic_input)1 2 third

Use of *args and **kargs in big talk python