1、元素分類python
有以下值集合 [11,22,33,44,55,66,77,88,99],將全部大於 66 的值保存至字典的第一個key中,將小於 66 的值保存至第二個key的值中。
即: {'k1': 大於66的全部值, 'k2': 小於66的全部值}api
l = [11, 22, 33, 44, 55, 66, 77, 88, 99] d = {'k1': [], 'k2': []} for i in l: if i >= 66: d['k1'].append(i) else: d['k2'].append(i) print(d)
li = ["alec", " aric", "Alex", "Tony", "rain"] print(li) for i in li[:]: x = li.index(i) li[x] = i.strip() print(li) l2 = [] for i in li[:]: if i.capitalize().startswith('A') and i.endswith('c'): l2.append(i) print(l2) #>>>>>>>>>> ['alec', ' aric', 'Alex', 'Tony', 'rain'] ['alec', 'aric', 'Alex', 'Tony', 'rain'] ['alec', 'aric'] tu = ("alec", " aric", "Alex", "Tony", "rain") l3 = [] print(tu) for i in tu: l3.append(i.strip()) tu = tuple(l3) #在循環裏面逐個修改會報錯: print(tu) l4 = [] for i in tu: if i.capitalize().startswith('A') and i.endswith('c'): l4.append(i) tu4 = tuple(l4) print(tu4) #>>>>>>>>>> ('alec', ' aric', 'Alex', 'Tony', 'rain') ('alec', 'aric', 'Alex', 'Tony', 'rain') ('alec', 'aric') dic = {'k1': "alex", 'k2': ' aric', "k3": "Alex", "k4": "Tony"} print(dic) for i in dic.keys(): dic[i] = dic[i].strip() print(dic) dic1 = {} for i in dic.keys(): if dic[i].capitalize().startswith('A') and dic[i].endswith('c'): dic1.update({i: dic[i]}) print(dic1) #>>>>>>>>>> {'k4': 'Tony', 'k2': ' aric', 'k1': 'alex', 'k3': 'Alex'} {'k4': 'Tony', 'k2': 'aric', 'k1': 'alex', 'k3': 'Alex'} {'k2': 'aric'}
li = ['手機', '電腦', '鼠標墊', '遊艇'] print('Exit If Not Number!') while True: s = input() if not s.isnumeric(): print('Exit') break z = int(s) if z > 4 or z < 1: print('Input Again Please:') continue for k, i in enumerate(li, 1): if k == z: print(i)
功能要求:app
goods = [ {"name": "電腦", "price": 1999}, {"name": "鼠標", "price": 10}, {"name": "遊艇", "price": 20}, {"name": "美女", "price": 998}, ]
print('請輸入您的總資產:') assets = int(input()) #總資產 cart = [] #購物車 price = 0 #花銷 balance = assets - price #餘額 goods = [ {"name": "電腦", "price": 1999}, {"name": "鼠標", "price": 10}, {"name": "遊艇", "price": 20}, {"name": "美女", "price": 998}, ] print('序號', '物品', '\t', '價格') for k, i in enumerate(goods, 1): print(k, '\t', i['name'], '\t', i['price']) while True: menu = ['購買', '充值', '購物車'] print('請輸入操做序號:') for k, i in enumerate(menu, 1): print(k, i) print('********************************') choose = int(input()) if choose == 1: while True: print('請輸入要購買的商品序號,若要返回請按其餘數字') seq = int(input()) # 購買物品的序號 if seq > 4: break if balance - goods[seq - 1]['price'] < 0: print('餘額不足!請前往充值!') break cart.append(goods[seq - 1]) price += goods[seq - 1]['price'] balance = assets - price elif choose == 2: print('請輸入充值金額:') money = int(input()) assets += money balance = assets - price print('充值成功!資產以下:') print('總資產:', assets, '\t' '總花費:', price, '\t', '餘額:', balance) elif choose == 3: while True: print('********************************') print('Shopping Cart:') print('序號', '物品', '\t', '價格') for k, i in enumerate(cart, 1): print(k, '\t', i['name'], '\t', i['price']) print('總資產:', assets, '\t' '總花費:', price, '\t', '餘額:', balance) print('********************************') menu_cart = ['移除', '結算'] print('請輸入操做序號,若要返回請按其餘數字') for k, i in enumerate(menu_cart, 1): print(k, i) print('********************************') choose_cart = int(input()) if choose_cart == 1: print('請輸入要移除的商品在購物車的序號') rm = int(input()) remove = cart.pop(rm - 1) price -= remove['price'] balance += remove['price'] print('移除成功!') elif choose_cart == 2: print('購買成功!訂單以下') print('********************************') print('Shopping Cart:') print('序號', '物品', '\t', '價格') for k, i in enumerate(cart, 1): print(k, '\t', i['name'], '\t', i['price']) print('總資產:', assets, '\t' '總花費:', price, '\t', '餘額:', balance) print('********************************') exit() else: break
忽然發現,受C語言影響,這裏將全部的輸入輸出分開寫了。。。顯得有些繁瑣,在input()裏面顯示提示信息會好一些。優化
另外,購物車結構能夠優化,把相同的條目計數,如 {商品 ,單價,數目}spa
5、用戶交互,顯示省市縣三級聯動的選擇blog
dic = { "河北": { "石家莊": ["鹿泉", "藁城", "元氏"], "邯鄲": ["永年", "涉縣", "磁縣"], }, "河南": { "鄭州": ["二七", "金水", "慧濟"], "洛陽": ["龍門", "白馬寺", "上清宮"], }, "山西": { "太原": ["萬柏林", "尖草坪", "杏花嶺"], "臨汾": ["堯都區", "金殿鎮", "屯裏鎮"], } } sheng = input("輸入省名查看市:") for i in dic[sheng]: print(i) shi = input("輸入市名查看縣區:") for j in dic[sheng][shi]: print(j)