Python學習筆記三

#函數的舉例

1 def add(a,b,c,d):
2     e=a+b+c+d
3     #print(e)
4     return e
5 
6 res1=add(1,2,3,4)
7 print("本次相加結果：",res1)

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#線程舉例

 1 import treading
 2 import time
 3 
 4 def run(name):
 5     print(name,"線程執行了")
 6     time.sleep(5)
 7 
 8 t1=treading.Tread(target=run,args=("t1",))
 9 t2=treading.Tread(target=run,args=("t2",))
10 
11 t1.start() #啓動線程
12 t2.start()
13 
14 print("執行完畢")

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#模擬銀行實時存取款(while，connection，break等嵌套使用)

 1 card1="1001"
 2 pwd1="123456"
 3 ban1=10000
 4 
 5 card2="1002"
 6 pwd2="123456"
 7 ban2=10000
 8 
 9 card3="1003"
10 pwd3="123456"
11 ban3=10000
12 
13 print("歡迎來到python銀行！")
14 times=1
15 
16 while True:
17     card=input("請輸入銀行卡號：")
18     pwd=input("請輸入密碼：")
19 
20     ban=0 #餘額
21 
22     if card==card1 and pwd==pwd1:
23         ban=ban1
24     elif card==card2 and pwd==pwd2:
25         ban=ban2
26     elif card==card3 and pwd==pwd3:
27         ban=ban3
28     else:
29         times=times+1
30         if times>=3:
31             print("您已經3次輸入錯誤，請聯繫銀行櫃檯")
32             break
33         else:
34             print("卡號密碼輸入錯誤,請從新輸入")
35             continue
36 
37     while True:
38         num=input("請輸入要辦理的業務：1.存款 2.取款 3.退卡")
39         if num=="1":
40             inn=float(input("請輸入存款金額："))
41             if inn<=0:
42                 print("存款金額請大於0！")
43             else:
44                 ban=ban+inn
45                 print("存款成功，存入:",inn,"餘額:",ban)
46         elif num=="2":
47             out=float(input("請輸入取款金額："))
48             if out>ban:
49                 print("餘額不足，趕忙去賺錢！")
50                 continue
51             else:
52                 ban=ban-out
53                 print("取款成功，取出：",out,"餘額：",ban)
54         elif num=="3":
55             print("請收好您的卡片，歡迎下次再來!")
56             break
57         else:
58             print("輸入有誤")
59             continue

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