Python 字典（三）

計算字典內的單字數和改成小

#改成小寫

lowersong = SONG.lower()

print(lowersong)
#去掉標點符號

for ch in lowersong:    if ch in “.,”:       

lowersong =lowersong.replace(ch,””)

print(“去掉標點符號”)

print(lowersong)
#歌曲串列

SONGLIST = lowersong.split()

print(“歌曲串列”)

print(SONGLIST)

#字出現的次數
for word in SONGLIST:   

if word in SONGDICT:       

SONGDICT[word] +=1   

else:       

SONGDICT[word] =1

print(“字出現的次數”)

print(SONGDICT)

執行結果

簡化的計算字典中字母出現次數

word = “GOODWORKTONY”
wordcount = {alphabet:word.count(alphabet)for alphabet in word}

print(wordcount)

執行結果

字典內容查詢

Class1 ={“Nini”:”Taiwan”,          “Momo”:”Japan”,          “Koko”:”Korea”,          “Roro”:”Iceland”}

wd =input(“Please input the name:”)

if wd in Class1:   

print(wd,”Location:”,Class1[wd])

else:   

print(“Error”)

執行結果

文件加密的凱薩密碼

eng =”abcdefghijklmnopqrstuvwxyz”

eng_DICT = {}

front5 = eng[:5] //abcde

end5 = eng[5:] //fghi….z

neweng = end5 + front5

newdict = dict(zip(eng,neweng))
text =input(“please input your password:”)
passwordlist=[]

for i in text:   

newpassword = newdict[i]   

passwordlist.append(newpassword)

newpasswords =””.join(passwordlist) //串列轉字串

print(newdict)

print(“Yor password:”,text)

print(“Yor new password:”,newpasswords)

執行結果

摩斯電碼翻譯器 

morse_code= {“A”:”.-“,”B”:”-…”,”C”:”-.-.”,”D”:”-..”,”E”:”.”,”F”:”..-.”,”G”:”–.”,”H”:”….”,”I”:”..”,”J”:”.—“,”K”:”-.-“,”L”:”.-..”,”M”:”–“,”N”:”-.”,”O”:”—“,”P”:”.–.”,”Q”:”–.-“,”R”:  “.-.”,”S”:”…”,”T”:”-“,”U”:”..-“,”V”:”…-“,”W”:”.–“,”X”:   “-..-“,”Y”:”-.–“,”Z”:”–..”,”0″:”—–“,”1″:”.—-“,”2″:”..—“,”3”:”…–“,”4”:”….-“,”5″:”…..”,”6″:”-….”,”7″:”–…”,”8″:”—..”,”9″:”—-.”}

Text = input(“Please input password:”)

UPTEXT =Text.upper()

for i in UPTEXT:   

print(morse_code[i])

執行結果

PYTHON 反轉字典

morse_code_r = {value:key for key,value in morse_code.items()}

print(morse_code_r)

Text = input(“Please input morse code:”)print(morse_code_r[Text])

執行結果