# 显示星期数
def Convert(i):
strWeek = "MonTueWedThuFriSatSun"
j = (i-1)*3
strDay = strWeek[j: j+3]
return strDay
def main():
i = int(input("请输入1-7中的某个数字： "))
strDay = Convert(i)
print("对应的星期数为：",strDay)
main()
#九九乘法表
for i in range(1,10):
for j in range(1,i+1):
print("%d*%d=%d "%(j,i,i*j),end="")
print()
#求一元二次方程的实数根
import math
def FindRoot(a,b,c):
x1=0
x2=0
numOfRoots=0
if a==0:
#print("这不是一元二次方程")
numOfRoots=-1
else:
delta=b**2-4*a*c
if delta<0:
#print("方程无实根")
numOfRoots=0
elif delta==0:
numOfRoots=1
x1=x2=-b/(2*a)
#print("root1=root2=",root1)
else:
numOfRoots=2
x1=(-b+math.sqrt(delta))/(2*a)
x2=(-b-math.sqrt(delta))/(2*a)
#print("root1=%g,root2=%g"%(root1,root2))
return x1,x2,numOfRoots
def main():
a=eval(input("请输入系数a:"))
b=eval(input("请输入系数b:"))
c=eval(input("请输入系数c:"))
x1,x2,numOfRoots=FindRoot(a,b,c)
if numOfRoots==-1:
print("这不是一元二次方程")
elif numOfRoots==0:
print("方程无实根")
elif numOfRoots==1:
print("x1=x2=",x1)
else:
print("x1=%g,x2=%g"%(x1,x2))
main()
#整型列表随机化
import random
array=[]
for i in range(20):
array.append(random.randint(0,15))
print("随机化整型列表：",array)
if 1 in array:
print("列表中有%d个1"%array.count(1))
#找出列表中的最大值
import random
array=[]
for i in range(20):
array.append(random.randint(0,100))
print(array)
maxItem=array[0]
for item in array:
if item >=maxItem:
maxItem=item
print("列表中的最大值是",maxItem)
#冒泡排序法
import random
M=20
array=[]
for i in range(M):
array.append(random.randint(0,100))
print(array)
for i in range(M-1):
for j in range(M-1-i):
if array[j]>array[j+1]:
t=array[j]
array[j]=array[j+1]
array[j+1]=t
print(array)
#选择排序法
import random
M=20
array=[]
for i in range(M):
array.append(random.randint(0,100))
print(array)
for i in range(M-1):
index=0
for j in range(M-i):
if array[j]>array[index]:
index=j
t=array[index]
array[index]=array[M-1-i]
array[M-1-i]=t
print(array)
#斐波那契数列
def Fibonacci(i):
if i<=1:
return 1
else:
return Fibonacci(i-1)+Fibonacci(i-2)
array=[1,1]
for i in range(2,40):
print(i)
#array.append(Fibonacci(i))
array.append(array[i-1]+array[i-2])
print(array)
#求π.py
from random import random
from math import sqrt
from time import clock
dots=99999
hits=0
clock()
for i in range(1,dots):
#print(i)
x,y=random(),random()
distense=sqrt(x**2+y**2)
if distense<=1:
hits+=1
pi=4*hits/dots
print("pi的大小为",pi)
#画python
import turtle
def drawSnake(rad,angle,len,neckrad):
for i in range(len):
turtle.circle(rad,angle)
turtle.circle(-rad,angle)
turtle.circle(rad,angle/2)
turtle.fd(rad)
turtle.circle(neckrad+1,180)
ttrutle.fd(rad*2/3)
def main():
turtle.setup(1300,800,100,0)
pythonsize=15
turtle.pensize(pythonsize)
turtle.pencolor("#3B9909")
turtle.seth(-40)
drawSnake(40,80,5,pythonsize/2)
main()
#字符串反转
def reverse(str):
if len(str)==1:
return str
else:
return reverse(str[1:])+str[0]
def main():
str=input("请输入一个字符串：")
print("反转后的字符串："+reverse(str))
main()
# drawtree.py
from turtle import Turtle, mainloop
import time
def tree(plist, l, a, f):
""" plist is list of pens
l is length of branch
a is half of the angle between 2 branches
f is factor by which branch is shortened
from level to level."""
if l > 5: #
lst = []
for p in plist:
p.forward(l)#沿着当前的方向画画Move the turtle forward by the specified distance, in the direction the turtle is headed.
q = p.clone()#Create and return a clone of the turtle with same position, heading and turtle properties.
p.left(a) #Turn turtle left by angle units
q.right(a)# turn turtle right by angle units, nits are by default degrees, but can be set via the degrees() and radians() functions.
lst.append(p)#将元素增加到列表的最后
lst.append(q)
tree(lst, l*f, a, f)
def main():
p = Turtle()
p.color("green")
p.pensize(5)
#p.setundobuffer(None)
p.hideturtle() #Make the turtle invisible. It’s a good idea to do this while you’re in the middle of doing some complex drawing,
#because hiding the turtle speeds up the drawing observably.
#p.speed(10)
#p.getscreen().tracer(1,0)#Return the TurtleScreen object the turtle is drawing on.
p.speed(10)
#TurtleScreen methods can then be called for that object.
p.left(90)# Turn turtle left by angle units. direction 调整画笔
p.penup() #Pull the pen up – no drawing when moving.
p.goto(0,-200)#Move turtle to an absolute position. If the pen is down, draw line. Do not change the turtle’s orientation.
p.pendown()# Pull the pen down – drawing when moving. 这三条语句是一个组合相当于先把笔收起来再移动到指定位置，再把笔放下开始画
#否则turtle一移动就会自动的把线画出来
#t = tree([p], 200, 65, 0.6375)
t = tree([p], 200, 65, 0.6375)
main()
time.sleep(10)
#文件拷贝
def CopyFile():
file1=input("请输入需要被拷贝的文件名：")
file2=input("请输入拷贝后的文件名：")
inFile=open(file1,"r")
outFile=open(file2,"w")
countLines=countChars=0
for line in inFile:
countLines+=1
countChars+=len(line)
outFile.write(line)
print(countLines,"lines and",countChars,"chars copied!")
inFile.close()
outFile.close()
CopyFile()
#计算器
i=eval(input("请输入式子："))
print("结果为：",i)
