python 核心编程 第十一章

第3题

#!/usr/bin/env python
def max2(x,y):
    return x if x>y else y
def min2(x,y):
    return x if x<y else y

print max2(8,4)
print min2(8,4)

def my_max(anyList):
    try:                      #Be sure the list isn't empty
        a = anyList[0]
    except Exception , docs:
        print str(docs)
    else:
        for L in anyList:
            a = a if a>L else L
        return a
def my_min(anyList):
    try:                      
        a = anyList[0]
    except Exception , docs:
        print str(docs)
    else:
        for L in anyList:
            a = a if a<L else L
        return a
print my_max("123456765")
print my_min("bcdaoe")

第4题

#!/usr/bin/env python
def changeTime(H,M):
    timeH = H + float(M)/float(60)
    timeM = H*60 + M
    return [timeH,timeM]
print changeTime(3,10)

第5题

#!/usr/bin/env python
def GD(G,pt = 0.1):
    return G*pt
print GD(100)
print GD(100,0.3)

第6题

#!/usr/bin/env python
def printf(strings,*lists):
    LEN = len(strings)
    listKey = ['d','f','s']
    nuEle = 0
    nuEle = strings.count("%f") + strings.count("%d") + strings.count("%s")
#    for ch in strings:
#        if ch == "%" and strings.index(ch) != LEN-1:         #The Code print strings.index(ch) aways show the index of firs"%"
#            nextCh = strings[strings.index(ch)+1]            #I don,t know what happen...
#            if nextCh in listKey:
#                nuEle += 1
    if nuEle != len(lists[0]):
        print "Wrong Element."
        return

    resultString = ""
    i = 0
    iterStr = 0
    while True:
        if strings[iterStr] == "%":
            try:
                nextChs = strings[iterStr+1]   #Be sure not out of range
            except Exception:
                resultString += strings[iterStr]
                break
            nextChs = strings[iterStr+1]
            resultString += str(lists[0][i])
            iterStr += 2
            i += 1
        else:
            resultString += strings[iterStr]
            iterStr += 1
        if iterStr == LEN:
            break
    print resultString

printf("abc%fabc%d",[3.1,6])
printf("aa%d%s%d",[100,"gogogogogo",20])
printf("asd%d%",[11])

第7题

#!/sur/bin/env python
def poly(X,Y):
    return X,Y
list_1 = [1,2,3,4,5]
list_2 = ['a','b','c','d','e']
print map(poly,list_1,list_2)
print zip(list_1,list_2)

第8题

#!/usr/bin/env python
def checkYear(Y):
    if (Y%4 == 0 and Y%100 != 0) or (Y%400 == 0 and Y%100 == 0):
        return True
    else:
        return False
listYear = [1000,2000,2600,1996,2001,1990,1900,1906]
print filter(checkYear,listYear)

第9题

#!/sur/bin/env python
def avgerage(X,Y):
    return X+Y
db = [1,2,3,5,7,9,10]
print "%.2f"%(float(reduce(avgerage,db))/float(len(db)))

第11题

#!/usr/bin/env python
import sys
import os
def clearSpace(chs):
    newChar = ""
    if chs == " ":
        return newChar
    else:
        return chs
newText = ""
fileName = open((sys.argv)[1],"r+")
for line in fileName:
    newText += str(map(clearSpace,line))
    newText += os.linesep
fileName.close()
fileName = open((sys.argv)[1],"w+")
fileName.write(newText)
fileName.close()

第12题

#!/usr/bin/env python
import time
def counts(LEN):
    for i in range(0,LEN):
        pass
def timeit(fun_1,Len):
    print"%s"%(time.clock())
    fun_1(Len)
    print"%s"%(time.clock())

print"Please Input Any Integer To Test:",
L = int(raw_input())
timeit(counts,L)

第13题

#!/sur/bin/env python
import time
High = 10
SUM = 0
SUM_L = 0
def mult(X,Y):
    return X*Y
for i in range(1,High+1):    #b
    SUM += reduce(mult,[x for x in range(1,i+1)])
print SUM

MULT = lambda x,y:x*y
for i in range(1,High+1):    #c
    SUM_L += reduce(MULT,[x for x in range(1,i+1)])
print SUM_L

第16题

#!/usr/bin/env python
from operator import add,sub,imul,ifloordiv
from random import randint,choice
ops = {'+':add,'-':sub,'*':imul,'/':ifloordiv}
fakeResult = randint(0,100)
ele = [randint(1,10) for i in range(2)]
op = choice("+-*/")
print"%d %s %d = %d"%(ele[0],op,ele[1],fakeResult)
realResult = (ops[op])(ele[0],ele[1])

print "Do You Think It's Right.(Y/N)",
jk = raw_input()
if fakeResult == realResult:
    if jk == 'Y':
        print"You Right."
    else:
        print "You Wrong"
else:
    if jk == 'N':
        print"You Right."
    else:
        print "You Wrong"