作为一名非计算机专业毕业的学生，一直想学Python用来解决工作中遇到的问题，但是对计算机一直摸不到好的门路，于是买到了Python语言程序程序设计这本书，用做习题的形式，积累自己的学习成果，相信不怕慢，只怕站。
# 1.1
print "Welcome to Python"
print "Welcome to Computer Science"
print "Program is fun"
# 1.2
print "Welcome to Python" * 5
# 1.3
print "F"*7," "*3,"U"," "*5,"U"," "*3,"N"*2," "*4,"N"*2
print "F"*2," "*4," "*3,"U"," "*5,"U"," "*3,"N"*3," "*3,"N"*2
print "F"*7," "*3,"U"," "*5,"U"," "*3,"N"*2,"","N"*1," "*1,"N"*2
print "F"*2," "*4," "*3,"","U"," "*3,"U"," "*4,"N"*2," "*2,"N","N"*2
print "F"*2," "*4," "*5,""*3,"U"*3," "*2," "*3,"N"*2," "*3,"N"*3
# 1.4
value = [1,2,3,4]
print "a"," "*4,"a^2"," "*2,"a^3"," "*4
print "1"," "*4,"1"," "*5,"1"," "*4
print "2"," "*4,"4"," "*5,"8"," "*4
print "3"," "*4,"9"," "*5,"27"," "*4
print "4"," "*4,"16"," "*4,"64"," "*4
# 1.5
solve = (9.5*4.5 - 2.5*3)/(45.5-3.5)
print solve
# 1.6
sum = 0
for i in range(10):
sum+=i
print sum
# 1.7
from __future__ import division
pi = 0.0
for i in range(1,8):
pi += 4*(((-1)**(i+1))/(2*i-1))
print pi
from __future__ import division
pi = 0.0
for i in range(1,11):
pi += 4*(((-1)**(i+1))/(2*i-1))
print pi
# 1.7
import numpy as np
class sl():
"""docstring for sl"""
def __init__(self, radius):
super(sl, self).__init__()
self.radius = radius
def area():
s = np.pi*self.radius*self.radius
return s
def perimeter():
l = 2*np.pi*self.radius
return l
solve = sl()
radius = 5
print solve.area(radius)
def area(radius):
s = np.pi*radius*radius
return s
def perimeter(radius):
l = 2*np.pi*radius
return l
r = 5
# print "area is %s" % area(r),"perimeter is %s" perimeter(r)
print area(r),perimeter(r)
# 1.9
def s(width,height):
s = width*height
return s
def l(width,height):
l = 2*width+2*height
return l
print s(4.5,7.9),l(4.5,7.9)
# 1.10
def milePerHour(m,s,mile):
enmile = mile/1.6
hour = (m*60+s)/3600
enmile_h = enmile/hour
return enmile_h
print milePerHour(40,30,14)
# 1.11
def predictPop(year):
a0 = 3120324986
s = year*365*3600
predict_pop = a0+(s/7.0+s/45.0-s/13.0)
return predict_pop
print predictPop(1)
print predictPop(2)
print predictPop(3)
print predictPop(4)
print predictPop(5)
# 1.12
import turtle
turtle.forward(100)
turtle.right(90)
turtle.forward(200)
turtle.right(90)
turtle.forward(200)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(200)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.left(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
# 1.13
import turtle
turtle.right(0)
turtle.forward(200)
turtle.right(180)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(180)
turtle.forward(200)
# 1.14
import turtle
turtle.right(60)
turtle.forward(100)
turtle.right(120)
turtle.forward(100)
turtle.right(120)
turtle.forward(100)
# 1.15
import turtle
turtle.right(60)
turtle.forward(100)
turtle.right(120)
turtle.forward(100)
turtle.right(120)
turtle.forward(200)
turtle.left(120)
turtle.forward(100)
turtle.left(120)
turtle.forward(100)
# 1.16
import turtle
turtle.color('red')
turtle.penup()
turtle.goto(0,0)
turtle.pendown()
turtle.circle(50)
turtle.color('blue')
turtle.penup()
turtle.goto(100,0)
turtle.pendown()
turtle.circle(50)
turtle.color('orange')
turtle.penup()
turtle.goto(0,-100)
turtle.pendown()
turtle.circle(50)
turtle.color('yellow')
turtle.penup()
turtle.goto(100,-100)
turtle.pendown()
turtle.circle(50)
# 1.17
import turtle
import math
import numpy as np
from __future__ import division
turtle.penup()
turtle.goto(-39,48)
turtle.write("(-39,48)")
turtle.pendown()
turtle.goto(50,-50)
# turtle.pendown()
turtle.write("50,-50")
turtle.done()
# 1.18
import turtle
# import math
# import numpy as np
# from __future__ import division
turtle.forward(200)
turtle.right(144)
turtle.forward(200)
turtle.right(144)
turtle.forward(200)
turtle.right(144)
turtle.forward(200)
turtle.right(144)
turtle.forward(200)
# 1.19
import turtle
turtle.penup()
turtle.goto(40,-69.28)
turtle.pendown()
turtle.goto(-40,-69.28)
turtle.goto(-80,-9.8)
turtle.goto(-40,69)
turtle.goto(40,69)
turtle.goto(80,0)
turtle.goto(40,-69.28)
turtle.done()
# 1.20
import turtle
turtle.goto(100,0)
turtle.goto(150,50)
turtle.goto(50,50)
turtle.goto(0,0)
turtle.goto(0,100)
turtle.goto(100,100)
turtle.goto(100,0)
turtle.penup()
turtle.goto(0,100)
turtle.pendown()
turtle.goto(50,150)
turtle.goto(150,150)
turtle.goto(100,100)
turtle.penup()
turtle.goto(50,150)
turtle.pendown()
turtle.goto(50,50)
turtle.penup()
turtle.goto(150,150)
turtle.pendown()
turtle.goto(150,50)
turtle.done()
# 1.21
import turtle
turtle.color("blue")
turtle.penup()
turtle.goto(0,0)
turtle.pendown()
turtle.circle(100)
turtle.penup()
turtle.goto(0,0)
turtle.pendown()
turtle.write("6")
turtle.penup()
turtle.goto(0,183)
turtle.pendown()
turtle.write("12")
turtle.penup()
turtle.goto(-96,100)
turtle.pendown()
turtle.write("9")
turtle.penup()
turtle.goto(90,100)
turtle.pendown()
turtle.write("3")
turtle.penup()
turtle.goto(0,100)
turtle.pendown()
turtle.goto(0,180)
turtle.penup()
turtle.goto(0,100)
turtle.pendown()
turtle.goto(-90,100)
turtle.penup()
turtle.goto(0,100)
turtle.pendown()
turtle.goto(80,100)
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