In [10]:

    

def reverse(s):
    print(s[len(s)::-1])
    
s=str(input('输入字符串'))
reverse(s)


    

    




输入字符串abcde
edcba

In [14]:

    

def tran():
    m=str(input('输入符号：'))
    n=int(input('输入行数：'))
    for i in range(1,n*2+1):
        for j in range(0,i):
            print(m , end=' ')
        print()
        
def tran2():
    m=str(input('输入符号：'))
    n=int(input('输入行数：'))
    for i in range(1,n*2+1):
        for k in range(n*2-i,0,-1):
            print(' ',end='')
        for j in range(0,i):
            print(m , end=' ')
        print()
        
def tran3():
    m=str(input('输入符号：'))
    n=int(input('输入行数：'))
    for i in range(1,2*n+1):
        for k in range(4*n-2*i,0,-1):
            print(' ',end='')
        for j in range(0,i):
            print(m, end=' ')
        print()              
        
tran()
tran2()
tran3()


    

    




输入符号：*
输入行数：3
* 
* * 
* * * 
* * * * 
* * * * * 
* * * * * * 
输入符号：*
输入行数：3
     * 
    * * 
   * * * 
  * * * * 
 * * * * * 
* * * * * * 
输入符号：*
输入行数：3
          * 
        * * 
      * * * 
    * * * * 
  * * * * * 
* * * * * * 

In [37]:

    

word=str(input('请输入一个单词'))
if word[len(word)-1]=='f':
    print('把f变为ve加s')
elif word[len(word)-1]=='y':
    print('把y变i加es')
elif word[len(word)-1]=='s':
    print('加es')
elif word[len(word)-1]=='h' and word[len(word)-2]=='s':
    print('加es')
elif word[len(word)-1]=='h' and word[len(word)-2]=='c':
    print('加es')
elif word[len(word)-1]=='x':
    print('加es')
else :print('加s')


    

    




请输入一个单词watch
加es

In [ ]:

    




    

In [ ]: