Getting Started with Python functions

X=print (' a ') #返回a

Print (a) #返回None

Here are three kinds of scores of programmers

a=[1,2,3,4] #想让输出结果显示次数和数字一样 (compared by five total)

The results shown are:

1

22

333

4444

The first method: (three points) the second method: (four points) the third method: (Five points)

For x in a:                                                 for  x in a:                                                           for x in  A:

    If x==1:                                                     if x==1:                                                              Print (SHR (x) *x)

Print (x) print (' 1 ')

Elif x==2:if x==2: When demand becomes more (a=[1,2,3,4 , 5,6,7,8]), the first must be changed to achieve basic functions, obviously more troublesome

       Print (str (x) *)                                        print (' $ ')                                                                                               The second kind also needs to be added, simple and convenient one point

    else:                                                           if x==3:                                                                                                   The third type does not need to change, the most concise and convenient

       If x==3:                                                      print (' 333 ')                                                                                              

Print (str (x)) if x=4:

Else:print (' 4444 ')

Print (str (x))

Getting Started with Python functions