資料結構

判斷質數(1)

i=2

prime=0

num = int(input("輸入一個整數:"))

while (i<=num**0.5):

   

    if (num%i==0):

        prime=1

    i+=1

   

if (prime==1):

    print("%s不是質數"%num)

else:

    print("%s是質數"%num)

判斷質數(2)

num = int(input("請輸入一個數字: "))

# 質數大於 1

if num > 1:

   # 查看因子

   for i in range(2,num):

       if (num % i) == 0:

           print(num,"不是質數")

           print(i,"乘與",num//i,"是",num)

           break

   else:

       print(num,"是質數")

       

# 如果輸入的數字小於或等於 1，不是質數

else:

   print(num,"不是質數")

九九乘法表

for i in range(1,10):

    for j in range(1,10):

        print(i,"*",j," = ","%2d"%(i*j),sep='',end='  ')

    print()

計算輸入的數的平均和總和

nums = count = 0

while True:

    num = int(input("輸入一個成績"))

    if num == -1:

        print('總成績為:',nums,'平均成績為:',nums/count)

        break

    

    nums += num

    count += 1

2017/10/12

2017/10/19

point = [

         [-1, 3],

         [-1, -1],

         [1, 1],

         [2, 0.5],

         [2, -1],

         [3, 3],

         [4, 2],

         [4, -0.5]

        ]

def distance(A, B):

    return((A[0]-B[0])**2 + ((A[1]-B[1])**2))**0.5

for a in point:

    for b in point:

        print(round(distance(a,b),1),'',end='')

print()

輸出一亂數

判斷是否為奇數，若是的話就把這數字「*3+1」，若否的話就「/2」，這是一個迴圈，直到數字n變為1才停止

import random

rand_num = random.randint(100,1000)

orig_rand_num = rand_num

loop_count = 0

every_step = []

while True:

    every_step.append(int(rand_num))

    if(rand_num == 1): break

    if(rand_num % 2 == 0):

        rand_num = rand_num/2

    else:

        rand_num = rand_num*3 + 1

    loop_count +=1

print("亂數 = ",orig_rand_num)

print("運算次數 = ",loop_count)

print("運算過程 : ",every_step)

建立一個字典

搜尋字典內的Key，然後輸出Value

name_dict = {}

key = ""

SearchKey = ""

print("Create dictionary:")

while key != "end":

    key = input("key:")

    if key == "end":

        break

    else:

        value = input("value:")

        name_dict[key] = value

        

while SearchKey != "end":

    SearchKey = input("Search key:")

    if SearchKey == "end":

        break

    else:

        if(SearchKey in name_dict) == False:

            print("Value:no such key")

        else:

            print("Value:"+name_dict[SearchKey])

open()使用方法

content = '''hello python

逢甲應用數學系

Welcome'''

f = open("file1.txt",'w')

f.write(content)

f.close()

f = open("file1.txt",'r')

for line in f:

    print(line)   

f.close()

with open("file1.txt",'r')as f:

    for line in f:

        print(line)

Tk1

import tkinter as tk

#主視窗名稱 = tk.Tk()

win = tk.Tk()

win.geometry("200x100")

win.title("這是主視窗")

lable = tk.Label(win,text = "hello world")

lable.pack()

cont = 0

def b():

    global cont

    cont += 1

    textvar.set("按我")

    lable.pack()

textvar = tk.StringVar()

button = tk.Button(win,textvariable = textvar,command = b)

textvar.set("按我")

button.pack()

win.mainloop()

Tk2

import tkinter as tk

win = tk.Tk()

win.title("這是主視窗")

frame1 = tk.Frame(win)

frame1.pack()

lable1 = tk.Label(frame1,text = "username:")

entry1 = tk.Entry(frame1)

lable1.grid(row = 0,column = 0)

entry1.grid(row = 0,column = 1)

frame2 = tk.Frame(win)

frame2.pack()

button1 = tk.Button(frame2,text = "yes")

button2 = tk.Button(frame2,text = "NO")

button1.grid(row = 0,column = 0)

button2.grid(row = 0,column = 1)

win.mainloop()