homework for 2nd class

Practice2-1.py

@@ -0,0 +1,45 @@
+# 四則運算
+
+while True :
+
+    print('\n這是小學生計算機, 運算式請輸入 "+,-,*,/" \n')
+    print("輸入格式 : 3 * 5  (全部輸入完請按 Enter ) \n")
+    try:
+        n1,op,n2=input().split() 
+    except ValueError:
+        print("\n忘記空格了齁！ 重來 OK ?!\n")
+        continue
+
+
+
+    n1=int(n1)
+    n2=int(n2)
+
+
+    print("= ",end="")
+
+
+    if op =="+":
+        print(n1+n2)
+
+
+    elif op =="-":
+        print(n1-n2)
+
+
+    elif op =="*":
+        print(n1*n2)
+
+
+    elif op =="/":
+        print(n1/n2)
+
+
+    else :
+        print("What the hell ?")
+
+    print("\n")
+
+
+
+

Practice2-2.py

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+# 使用者輸入一個正整數，算整數平方根
+
+while True:
+
+    print("\n我要來算平方根, you know.")
+    n=int(input("請輸入一個正整數 : "))
+    x=1
+
+    while x**2 <= n:
+
+        if x**2 == n:
+            print("\n",n,"的平方根 = " ,x)
+            break
+
+        else :
+            x+=1
+    if x**2>n :
+        print("\nSorry 我只有國中智商...")
+        print("輸入個我會算的 QAQ\n")
+        continue
+
+    else:
+        w=input("\n還要再看我表演一次嗎？ y or n  :")
+
+    if w=="y" :
+
+        continue
+
+    else:
+        print("\nBye !")
+
+        break
+

Practice2-3.py

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+# 輸出九九乘法表
+
+print("Ladies & Gentleman !")
+print("來看我一次變出九九乘法表囉！")
+print("倒數五秒~\n")
+
+import threading
+import time
+
+def fun_timer():
+
+    print("秒")
+    global timer
+    timer = threading.Timer(1, fun_timer)
+    timer.start()
+
+print("秒")
+
+timer = threading.Timer(1, fun_timer)
+timer.start()
+
+time.sleep(5)
+timer.cancel()
+
+
+for w in range(1,10) :
+
+    for n in range(1,9):
+
+        if n*w <10 :
+            print(n,"x",w,"= ",n*w,end="     ")
+
+        else:
+            print(n,"x",w,"=",n*w,end="     ")
+
+    if w==1:
+        print(9,"x",w,"= ",9*w)
+    else:
+        print(9,"x",w,"=",9*w)
+
+
+

Practice2-4.py

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+# 質數偵測
+
+print("\n我要來幫你檢查是不是質數了, you know.")
+n=int(input("請輸入一個正整數 : "))
+print("\n",n,"的因數有 : ",end="")
+const=0
+
+for x in range(1,n+1) :
+
+    if n%x ==0 :
+
+        print(x,",",end=" ")
+        const+=1
+
+
+if const >=3 :
+
+    print("\n\n除了 1 和",n,"以外還有其他因數")
+    print("\n所以",n,"不是質數 ~")
+
+else:
+    print("\n\n唉呦, 看來",n,"是質數喔 ~")
+