C + + to python knowledge of one of the little notes

#-*-Coding:utf-8-*-  #utf-8 Support Chinese encoding  words=[' cat ', ' dog ', ' chicken ']for W in words[:]:   #words [:] Copied the original list    Words.insert (0, w) Print Words a = Range (0,10,4) print Aargs=[3,10,3]print range (*args) #[3, 6, 9] #我们还可以把range的argument储存在list或tuple中  def F (A, l=[]):    L.append (a)     return l  Print f (1) print F (2) print F (3) [1][1, 2][1, 2, 3] The default value of the function parameter is initialized only the first time, which is the static variable ' def A (a=0):    a=a+1    Print A a () a () "But this shows only 1 because the Mutable object in Python is List,dictionary,instances" def AA (*args,**keys):    for a in args:        print a    for D in keys:        print D, ' : ', keys[d]      AA (1,2,3,a=1,b=2,c=3) #类似cpp的 *arg Plus * indicates that it will accept arbitrary arg,** to accept arbitrary dict  def Parrot (Voltage, state= ' a stiff ', action= ' voom '):    print "--this parrot wouldn ' t", action,  &NB Sp Print "If you put", voltage, "volts through it.",  &NBSp Print "E ' s", State, "!"   d = {"state": "Bleedin ' demised", "Voltage": "Four Million", "Action": "Voom"}parrot (**d) #--this parrot would N ' t voom if you put the four million volts through it. E ' s bleedin ' demised! #我们可以把参数保存在字典中 if key is corresponding to argument.   f=lambda a,b,c:a*b+cprint F (2,3,5) # Enter the previous argument, return the following value   #字典树user ={}user[' CS ']={}user[2]={}user[' cs ' [' bo ']=1user[' CS ' [' Co ']=2user[2][1]= 1print User.keys () print user.values () print user[' CS '].values () print user[' CS '].keys ()

C + + to python knowledge of one of the little notes