python script 21-30

已经是第三天了 。感觉真是不错。
渐渐的 有 点 感觉了 。每天看近4小时，还真有点累阿！
再说一次，这些都是俺自己打的，略有改动，文件中加如解释比较多。
代码越来越长了。呵呵
1，no_vowels.py
message=raw_input("Enter a message:")
new_message=''
VOWELS='aeiou'
print
for letter in message:
        if letter.lower() not in VOWELS:
                # make sure only lowercase letters when using "in" operator
                new_message+=letter
                print "A new string has been created.", new_message
print "\nYour message without vowels is:", new_message
raw_input("\n\nPress the enter key to exit.")
2，pizza.py
word='pizza'
print "enter the beginning and ending index for your slice of 'pizza'"
print "press the enter key at 'begin' to exit."
begin=None                   # None is python's way of representing nothing
                                        # evaluates to false when treated as a condition
while begin != '':
        begin=(raw_input("\nBegin:"))
        if begin:
                begin=int(begin)
               
                end=int(raw_input("End:"))
                print "word[", begin, ":", end, "]\t\t",
                print word[begin:end]
raw_input("\nPress the enter key to exit.")
3,inventory.py
inventory=()
# treat the tuple as a condition
if not inventory:
        print "you are empty-handed."
raw_input("\nPress the enter key to continue.")
# create a tuple with some items
inventory=("sword",
                        "armor",
                        "shield",
                        "healing potion")
# you can write a tuple in one line
# or span it across multiple lines
# make your programs easier to read by creating tuples
# across multiple lines
# print the tuple
print "\nThe tuple inventory is:\n", inventory
# print each element in the tuple
print "\nYour items:"
for item in inventory:
        print item
raw_input("\nPress the enter key to exit.")
4,inventory2.py
inventory = ("sword",
                        "armor",
                           "shield",
                              "healing potion")
print " Your items : "
for item in inventory :
        print item
raw_input ( " \nPress the enter key to continue")
# get the length of the inventory
print " You have ", len(inventory), " items in your possesion."
raw_input ( " \nPress the enter key to continue")
# test for membership with in
if "healing potion" in inventory:
        print " You will live to fight another day."
# display one item through an index
index = int ( raw_input ( "\nEnter the index number for an item in inventory : "))
print "At index", index, "is", inventory[index]
# display a slice
begin = int ( raw_input (" \nEnter the index number to begin a slice: "))
end = int ( raw_input ("\nEnter the index number to end the slice:"))
print "inventory[", begin, " : " , end , "]\t\t",
print inventory [begin : end]
raw_input ( "\nPress the enter key to continue")
# concatenate two tuples
chest = ( "gold", "gems")
print  "You find a chest. It contains :"
print chest
print "You add the contents of the chest to your inventory"
inventory+=chest
print "Your inventory is now:"
print inventory
raw_input("\n\nPress the enter key to exit.")
5,word_jumble.py
import random
# create a sequence of words to choose from
WORDS=( "python",
                "jumble",       
                  "easy",
                    "difficult",
                      "answer",
                "xylophone")
# use random.choice() to grab a random word form WORDS
# pick one word randomly from the sequence
word = random.choice(WORDS)
# this function generates strings in WORDS
# assign word to correct to see the player makes a correct guess
# create a variable to use later to see if the guess is correct
correct = word
# create a jumbled version of word
jumble =" "
while word:
        position = random.randrange(len(word))
        # create a new version of the string jumble
        jumble+=word[position]
        word = word[: position] + word[ (position+1) :]
       
# star the game
print \
"""
                                Welcome to word Jumble!
                Unscramble the letters to make a word.
(press the enter key at the promt to quit.)
"""
print " The jumble is:", jumble
# getting the player's guess
guess = raw_input("\nYour guess : ")
guess = guess.lower()
while (guess!=correct) and (guess!=" "):
        print "sorry, that's not it."
        guess=raw_input("Your guess:")
        guess = guess.lower()
if guess==correct:
        print "That's it! You guessed it!\n"
       
# end the game
print "Thanks for playing"
raw_input( "\n\nPress the enter key to exit.")
6,inventory3.py
inventory = [ "sword", "armor", "shield", "healing potion"]
print " Your items:"
for item in inventory:
        print item
raw_input("\nPress the enter key to continue.")
# get the length of a list
print "You have", len(inventory), "items in your inventory"
raw_input("\nPress the enter key to continue")
# test for membership with in
if "healing potion" in inventory:
        print "You will live to fight another day."
# display one item through an index
index=int(raw_input("\nEnter the index number for an item in inventory:"))
print "At index", index, "is", inventory[index]
# display a slice
begin=int(raw_input("\nEnter the index number to begin a slice:"))
end=int(raw_input("\nEnter the index number to end a slice:"))
print "inventory[", begin, ":", end, "]\t\t",
print inventory[begin:end]
# concatenate two lists
chest=["gold", "gems"]
print "You find a chest which contains:"
print chest
print "You add the contents of the chest to your inventory"
inventory+=chest
print "Your inventory is now:"
print inventory
raw_input("\nPress the enter key to continue")
# assign by index
print "You trade your sword for a crossbow"
inventory[0]="crossbow"
print "Your inventory is now:"
print inventory
raw_input("\nPress the enter key to continue")
# assin by slice
print "You use your gold and gems to buy an orb of future telling."
inventory[4:6] =["orb of future telling"]
print "Your inventory is now:"
print inventory
raw_input("\nPress the enter key to continue")
# delete an element
print "In a great battle , your shield is destroyed."
del inventory[2]
print "Your inventory is now:"
print inventory
raw_input("\nPress the enter key to continue")
# delete a slice
print "Your crossbow and armor are stolen by thieves."
del inventory[:2]
print "Your inventory is now:"
print inventory
raw_input("\n\nPress the enter key to exit.")
7,shared_references.py
mike=["khakis", "dress shirt", "jacket"]
mr_dawson=mike
honey=mike
print "\na friend calls me Mike, I'm wearing",
print mike
print "\na dignitary calls me Mr Dawson, I'm wearing",
print mr_dawson
print "\nmy girlfirend calls me Honey, I'm wearing",
print honey
# all three variables, mike mr_dawson, and honey,
# refer to the same, single list, representing me
# at least what i'm wearing
honey[2]="red sweater"
print "\nmy girlfirend asks me to change my jacket for a red sweater now, i'm wearing",
print honey
print "\nif a friend meets me, he calls me mike, and i'm wearing",
print mike
print "\nif a dignitary meets me, he calls me Mr Dawson, and i'm still wearing",
print mr_dawson
mike=["khakis", "dress shirt", "jacket"]
honey=mike[:]
# honey is assigned a copy of mike
# honey doesnot refer to the same list
# just as i was cloned
# one at home with my girlfirend
# one at my work place with my friend
honey[2]="red sweater"
print "\nat home a cloned me  is wearing",
print honey
print "\nbut at my work place, i'm still wearing",
print mike
8,high_scores.py
scores =[92,92,87,90,85,93,96,95,98]
choice =None
while choice !="0":
        print \
        """
        High Scores Keeper
       
        0        exit
        1        show scores
        2        add a score
        3        delete a score
        4        sort scores
        """
        choice=raw_input("Choice:")
        print
        # exit
        if choice =="0":
                print "goodbye"
        # list high-score table
        elif choice=="1":
                print "high scores"
                for score in scores:
                        print scores
        # add a scores
        elif choice=="2":
                score=int(raw_input("what score did you get?:"))
                scores.append(score)
                print "your new scores are:", scores
        # delete a score
        elif choice =="3":
                score=int(raw_input("Delete which score?:"))
                if score in scores:
                        scores.remove(score)
                        print "Your new scores are:", scores
                else:
                        print score, "isn't in the high scores list."
        # sort scores
        elif choice=="4":
                scores.sort()
                print "the scores in acending order  are:",scores
                scores.reverse()     # want the highest number first
                print " in reverse, the scores are:", scores
        # some unknow choice
        else:
                print "sorry, but", choice, "isn't a valid choice."
       
raw_input("\n\nPress the enter key to exit.")
9,high_scores2.py
scores=[("A",1000),  ("D", 4000),("C", 3000) ,("E", 5000),("B",2000),]
print  scores
choice=None
while choice!="0":
        print \
        """
        High Scores Keeper
        0        quit
        1        list scores
        2        add a score
        """
        choice=raw_input("Choice:")
        print
        # exit
        if choice=="0":
                print "Goodbye!"
       
        # display high-score table
        elif choice=="1":
                print "NAME\tSCORE"
                for entry in scores:
                        name,score=entry
                        print name, "\t", score
        # add a score
        elif choice=="2":
                name=raw_input("what is the player's name?:")
                score=int(raw_input("what score did the player get?:"))
                entry=( name,score)
                scores.append(entry)
                print "\nThe new scores are:",scores
                scores.sort()
                print "\nAscending order", scores
                scores.reverse()
                print "\nDescending order",scores
                scores=scores[:5]
                print "\nthe first FOUR",scores
       
        # some unknow choice
        else:
                print "sorry, but", choice, "isn't a valid choice"
       
raw_input("\nPress the enter key to ex it")
10,geek_translator.py
geek = { "404": "Clueless. From the web error message 404, meaning page not found.",
                "Googling": "Searching the Internet for background information on a person.",
                "Link Rot" : "The process by which web page links become obsolete.",
                "Keyboard Plaque": "The collection of debris found in computer keyboards.",
                "Percussive Maintenance": " The act of striking an electronic device to make it work.",
                "Uninstalled" : "Being fired. Especially popular during the dot-bomb era."}
print "the dictionary is:",geek
# using a key to retrieve a value
print "\nThe value of dictionary geek\'s key '404' is :",
print geek["404"]
print "\nThe value of geek\'s  key 'Link Rot' is:",
print geek["Link Rot"]
# dictionaries don't have position numbers at all
if "Dancing Baloney" in geek:
        print "\nI know what Dancing Baloney is."
else:
        print "\nI have no idea what Dancing Baloney is."
print "\nAs 'Dancing Baloney' is not in geek, so when retrieve it ,you will get:",
print geek.get("Dancing Baloney", "i have no idea.")
print "\nAs '404' is in geek, so when you retrieve it, you will get:",
print geek.get("404")
choice=None
while choice!="0":
        print \
        """
        Geek Translator
        0        quit
        1        look up a geek term
        2        add a geek term
        3        redefine a geek term
        4        delete a geek term
       
        """
        choice=raw_input("Choice:")
        print
       
        # exit
        if choice=="0":
                print "goodbye"
        # get a definition
        elif choice=="1":
                term=raw_input("what term do you want me to translate?")
                if term in geek:
                        definition=geek[term]
                        print "\n", term, "means", definition
                else:
                        print "\nSorry, I don't know", term
        # add a term-definition pair
        elif choice=="2":
                term=raw_input("what term do you want me to add?:")
                if term not in geek:
                        definition=raw_input("what's the definition?:")
                        geek[term]=definition
                        print "\n", term, "has been added."
                        print "\nNow the new geek is :", geek
                else:
                        print  "\nThat term already exists! Try redefining it."
        # redefine an existing term
        elif choice=="3":
                term=raw_input("what term do you want me to redefine?:")
                if term in geek:
                        definition=raw_input("what's the new definition?:")
                        geek[term]=definition
                        print "\n", term, "has been redefined"
                        print geek
                else:
                        print "\nThat term doesn't exist! Try adding it."
        # delete a term-definition pair
        elif choice=="4":
                term=raw_input("what term do you want me to delete?:")
                if term in geek:
                        del geek[term]
                        print "\nOK, I deleted", term
                else:
                        print "\nI can't do that!", term, "doesn't exist in the dictionary."
        # some unknow choice
        else:
                print "\nSorry, but", choice, "isn't a valid choice."
raw_input("\nPress the enter key to exit.")
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