import time
print time.ctime(time.time())
print time.asctime(time.localtime(time.time())) print time.asctime(time.gmtime(time.time())) '''
【程序92】
题目:时间函数举例2
1.程序分析: 2.程序源代码: '''
if __name__ == '__main__': import time
start = time.time() for i in range(3000): print i
end = time.time() print end - start '''
【程序93】
题目:时间函数举例3 1.程序分析: 2.程序源代码: '''
if __name__ == '__main__': import time
start = time.clock() for i in range(10000): print i
end = time.clock()
print 'different is %6.3f' % (end - start) '''
【程序94】
题目:时间函数举例4,一个猜数游戏,判断一个人反应快慢。(版主初学时编的) 1.程序分析: 2.程序源代码:
'''
if __name__ == '__main__': import time import random
play_it = raw_input('do you want to play it.(\\'y\\' or \\'n\\')') while play_it == 'y':
c = raw_input('input a character:\\n') i = random.randint(0,2**32) % 100
print 'please input number you guess:\\n' start = time.clock() a = time.time()
guess = int(raw_input('input your guess:\\n')) while guess != i: if guess > i:
print 'please input a little smaller'
guess = int(raw_input('input your guess:\\n')) else:
print 'please input a little bigger'
guess = int(raw_input('input your guess:\\n')) end = time.clock() b = time.time()
var = (end - start) / 18.2 print var
# print 'It took you %6.3 seconds' % time.difftime(b,a)) if var < 15:
print 'you are very clever!' elif var < 25:
print 'you are normal!' else:
print 'you are stupid!' print 'Congradulations'
print 'The number you guess is %d' % i
play_it = raw_input('do you want to play it.') '''
【程序96】
题目:计算字符串中子串出现的次数 1.程序分析: 2.程序源代码: '''
if __name__ == '__main__':
str1 = raw_input('input a string:\\n') str2 = raw_input('input a sub string:\\n') ncount = str1.count(str2) print ncount '''
【程序97】
题目:从键盘输入一些字符,逐个把它们送到磁盘上去,直到输入一个#为止。 1.程序分析: 2.程序源代码: '''
if __name__ == '__main__': from sys import stdout
filename = raw_input('input a file name:\\n') fp = open(filename,\
ch = raw_input('input string:\\n') while ch != '#': fp.write(ch) stdout.write(ch) ch = raw_input('') fp.close() '''
【程序98】
题目:从键盘输入一个字符串,将小写字母全部转换成大写字母,然后输出到一个磁盘文 件“test”中保存。
输入的字符串以!结束。 1.程序分析: 2.程序源代码: '''
if __name__ == '__main__': fp = open('test.txt','w')
string = raw_input('please input a string:\\n') string = string.upper() fp.write(string)
fp = open('test.txt','r') print fp.read() fp.close() '''
【程序99】
题目:有两个磁盘文件A和B,各存放一行字母,要求把这两个文件中的信息合并(按字母顺序 排列),
输出到一个新文件C中. 1.程序分析: 2.程序源代码: '''
if __name__ == '__main__': import string
fp = open('JCP099.py') a = fp.read() fp.close()
fp = open('JCP098.py') b = fp.read() fp.close()
fp = open('C.txt','w') l = list(a + b) l.sort() s = ''
s = s.join(l) fp.write(s) fp.close()
c经典100例【python实现】修正版2010年11月



