python-字典与列表学习

rule

　　#字典练习
　　def print_dict():
　　contect_file = 'contect_list.txt'
　　f = file(contect_file)  #读取
　　contect_dic = {}
　　for line in f.readlines():
　　name = line.split()[1]
　　contect_dic[name] = line  #是修改也是添加
　　#print contect_dic  #调试输出
　　'''
　　for n,v in contect_dic.items():
　　print "%s \t%s" % (n,v),  #调试输出看
　　'''
　　while True:
　　inputvales = raw_input("Please input the staff name:").strip()
　　if len(inputvales) == 0:
　　continue
　　if contect_dic.has_key(inputvales):
　　print "%s \t"% contect_dic[inputvales]
　　else:
　　print 'Sorry ,no staff name find!'
　　#print_dict()
　　#列表练习
　　def print_show():
　　f = file('shop.txt')
　　products = []
　　prices = [0]
　　shops_list = [0]
　　for line in f.readlines():
　　new_line = line.split()
　　print new_line[0]
　　products.append(new_line[0])
　　prices.append(int(new_line[1])) #如果不改变类型，这样加进入是str类型
　　#print products
　　#print prices
　　salary = int(raw_input("please input your salary:"))
　　while True:
　　print "welcome ,things you can buy as below:"
　　for p in products:
　　p_index = products.index(p)
　　p_price = prices[p_index]   #通过索引查找对应值
　　print p,p_index,p_price    #验证结果
　　choice = raw_input('Please input what your want to buy:')
　　f_choice = choice.strip()
　　if f_choice in products:
　　print 'Yes ,it is in list!'
　　f_index = products.index(f_choice)
　　f_price = prices[f_index]
　　# print f_price  ,type(f_price) #调试
　　if salary >= f_price:
　　print "Congrautations,added %s to shop list "% f_choice
　　shops_list.append(f_choice)
　　salary = salary - f_price
　　print "Now you have %d left !keep buying!" % salary,
　　else:
　　if salary < min(prices):
　　print "Soory ,your can not buy anththing !bye!\n"
　　print "you have bought :",shops_list
　　sys.exit()
　　else:
　　print "Sorry ,money is not enough to buy %s ,please tyr another one!"% f_choice
　　else:
　　print 'Sorry ,%s  not in the list ,pleass try another one :'% f_choice
　　#文件操作
　　def open_file():
　　#f = open('contanct_list.txt','r+')
　　with open('data.txt','r+') as f:
　　old = f.read()
　　f.seek(36)       #单行修改
　　f.write("liwen is back is good")
　　#open_file()
　　def open_file_01():
　　for line in fileinput.input("data.txt",backup="bak",inplace=1): #back 备份
　　line = line.replace('meingli','liwen is good')  #只有meingli 就 替换
　　print line
　　#open_file_01()