28）：題目：請輸入星期幾的第一個字母來判斷一下是星期幾，如果第一個字母一樣，則繼續判斷第二個字母。

程序分析：用情況語句比較好，如果第一個字母一樣，則判斷用情況語句或if語句判斷第二個字母。

#!/usr/bin/python
# -*- coding: UTF-8 -*-

letter = raw_input("please input:")
#while letter  != ‘Y‘:
if letter == ‘S‘:
    print (‘please input second letter:‘)
    letter = raw_input("please input:")
    if letter == ‘a‘:
        print (‘Saturday‘)
    elif letter  == ‘u‘:
        print (‘Sunday‘)
    else:
        print (‘data error‘)
    
elif letter == ‘F‘:
    print (‘Friday‘)
    
elif letter == ‘M‘:
    print (‘Monday‘)
    
elif letter == ‘T‘:
    print (‘please input second letter‘)
    letter = raw_input("please input:")
 
    if letter  == ‘u‘:
        print (‘Tuesday‘)
    elif letter  == ‘h‘:
        print (‘Thursday‘)
    else:
        print (‘data error‘)
        
elif letter == ‘W‘:
    print (‘Wednesday‘)
else:
    print (‘data error‘)
 

以上實例輸出結果為：

please input:S
please input second letter:
please input:a
Saturday

#!/usr/bin/python
# -*- coding: UTF-8 -*-

import  re

def judge(first,list):
    li=[]
    first = first.upper()
    for a in list:
        if re.match(first,a):
            li.append(a)
    if len(li)==1:
        print li[0]
    else:
        second=raw_input(‘請輸入第二個字母：‘)
        for b in li:
            if re.match(first+second,b):
                print b

list=[‘Monday‘,‘Tuesday‘,‘Wednesday‘,‘Thursday‘,‘Friday‘,‘Saturday‘,‘Sunday‘]
first=raw_input(‘請輸入第一個字母：‘)
judge(first,list)
 

Python3 測試實例：

#!/usr/bin/python3

weeklist = {‘M‘: ‘Monday‘,‘T‘: {‘u‘: ‘Tuesday‘,‘h‘:‘Thursday‘}, ‘W‘: ‘Wednesday‘, ‘F‘:‘Friday‘,‘S‘:{‘a‘:‘Saturday‘,‘u‘:‘Sunday‘}}
sLetter1 = input("請輸入首字母：")
sLetter1 = sLetter1.upper()

if (sLetter1 in [‘T‘,‘S‘]):
    sLetter2 = input("請輸入第二個字母：")
    print(weeklist[sLetter1][sLetter2])
else:
    print(weeklist[sLetter1])
 

Python3實例，使用遞歸函數實現，對字符相同的個數沒有限制：

#!/usr/bin/env python3

week=[‘Monday‘,‘Tuesday‘,‘Wednesday‘,‘Thursday‘,‘Friday‘,‘Saturday‘,‘Sunday‘]

def find(s,week):
    a = input("please input a letter\n")
    s=s+a
    #print(s)    
    result=[]
    for i in week:
        if i.startswith(s):
            result.append(i)
    #print (result)    
    if len(result)==1:
        return result
    else:
        return find(s,result)

s=‘‘
print(find(s,week))

情況語句練習小例子。如果感覺不錯的話，請多多點贊支持哦。。。

　　原文鏈接：https://blog.csdn.net/luyaran/article/details/80075427

python2.7練習小例子（二十八）