python核心编练习答案

text = raw_input('enter a word: ')
print text

num = int(raw_input('enter a num: ')

print num

i = 0
while i <= 10:
    print i
    i += 1

for i in range(0,11):
print i

#-*- coding:utf-8 -*-

num = int(raw_input('请输入一个整数： '))
if num >0:
print '%d 是正数' % num
elif num <0:
print "%d 是负数" % num

else:
print "这个数值是0"

#-*- coding:utf-8 -*-

text = raw_input('输入内容： ')

for i in range(len(text)):
print i,text[i]

#-*- coding:utf-8 -*-

text = raw_input('输入内容： ')

i = len(text)

j = 0

while j < i:
print j,text[j]

j += 1

#coding=utf-8
i  = 0
alist = []
while i < 5:
num = int(raw_input('enter a num: '))
i += 1
alist.append(int(num))
num = sum(alist)
print num

# coding=utf-8

print sum(int(raw_input('输入一个整数：')) for i in range(5))

# coding=utf-8

print sum(float(raw_input('输入一个浮点数：')) for i in range(5)) / 5.0

# -*- coding:utf-8 -*-

print '请输入一个整数.'
count = 2
while count > 0:
num = int(raw_input())

if 1<num<100:
break
else:
if num >= 100:
print "错了错了，数字太大"

elif num <=1:
print '错了错了，数字太小'

print 'Game Over'

#coding=utf-8
print """欢迎进入菜单程序，请选择下列序号：
｜－－1 取五个数的和；
｜－－2 取五个数的平均值；
｜－－X 退出程序
"""

choice = 0
while 1:
choice = raw_input('请选择序号： ')
if choice == 'x' or choice == 'X':
break
else:
if choice == '1':
print sum(int(raw_input('请输入一个整数：')) for i in range(5))
elif choice == '2':
print (sum(float(raw_input('请输入一个小数：')) for i in range(5))) / 5.0
else:
print '输入错误，请重新输入序号'