练习一下Python的基本语法，每一个单独的测试写进一个函数内，执行时只需调用相应的函数即可，可以对习题进行举一反三，加强理解。
#!/usr/bin/python
# while循环打印数字0到10
def pp1():
n = 0
while n <= 10:
print n,
n += 1
# for循环打印数字0到10
def pp2():
for n in range(0, 11):
print n,
# if 控制结构判断数字正负
def pp3():
# i = 23
i = int(raw_input('Input your number: '))
if i < 0:
print "less than 0."
elif i == 0:
print "equal 0."
else:
print "larger than 0."
# 依次打印一个字符串的每个字符
def pp4():
s = raw_input('type a string: ')
for i in range(0, len(s)):
print s[i]
# 用while改写上例
def pp5():
s = raw_input('type a string: ')
i = 0
while i < len(s):
print s[i]
i += 1
# 对五个数求平均值
def pp6():
num = [7, 7, 8, 9, 10]
sum = 0
for i in range(0, len(num)):
sum += num[i]
avg = float(sum/len(num))
print avg
# 猜一个数值
def pp7():
rdom = 56
while True:
ynum = int(raw_input('Input a number between 1 and 100: '))
if ynum > rdom:
print 'Your number is too high.'
continue
elif ynum < rdom:
print 'Your number is too low.'
continue
else:
print 'You got.'
break
# 根据菜单提示选择求和，平均值选项
def pp8():
print '\t\t\t1). Get sum\n\t\t\t2). Get average\n\t\t\tx). Exit'
ychoice = raw_input('Choose your option: ')
if ychoice == '1':
n1 = int(raw_input('Input first data: '))
n2 = int(raw_input('Input second data: '))
n3 = int(raw_input('Input third data: '))
n4 = int(raw_input('Input fourth data: '))
n5 = int(raw_input('Input fifth data: '))
sum = n1+n2+n3+n4+n5
print 'The sum is: ', sum
elif ychoice == '2':
n1 = int(raw_input('Input first data: '))
n2 = int(raw_input('Input second data: '))
n3 = int(raw_input('Input third data: '))
n4 = int(raw_input('Input fourth data: '))
n5 = int(raw_input('Input fifth data: '))
sum = n1+n2+n3+n4+n5
avg = sum / 5
print 'The average is: ', avg
elif ychoice == 'x':
print 'Exit.'
else:
print 'You type wrong choice. Exit.'
# 对3个数字进行由小到大排序
def pp9():
num1 = int(raw_input('Input number one: '))
num2 = int(raw_input('Input number two: '))
num3 = int(raw_input('Input number three: '))
print num1, num2, num3
if num1 > num2:
if num1 > num3:
if num2 > num3:
print num3, num2, num1
else:
print num2, num3, num1
else:
print num2, num1, num3
else:
if num1 > num3:
print num3, num1, num2
else:
if num3 > num2:
print num1, num2, num3
else:
print num1, num3, num2
# 执行相应函数
pp9()# 判断年份是否为闰年
def pp12():
yyear = int(raw_input('Input the year: '))
if yyear % 4 == 0:
if yyear % 100 == 0:
if yyear % 400 == 0:
return "Leap year."
else:
return "Not a leap year."
else:
return "Leap year."
else:
return "Not a leap year."
#print pp12()
# 输入小于1美元的美分，判断分别由几个25美分，10美分，5美分和1美分组成，按最少组合计
def pp13():
n1 = n2 = n3 = n4 = 0
ymoney = float(raw_input('Input your money(<1): '))
ymoney *= 100
if ymoney // 25 == 0:
n1 = ymoney // 25
else:
n1 = ymoney // 25
rest1 = ymoney % 25
if rest1 % 10 == 0:
n2 = rest1 // 10
else:
n2 = rest1 // 10
rest2 = rest1 % 10
if rest2 % 5 == 0:
n3 = rest2 // 5
else:
n3 = rest2 // 5
rest3 = rest2 % 5
if rest3 % 1 == 0:
n4 = rest3 // 1
print "Your money is ", int(n1), \
"*0.25 cents, ", int(n2), "*0.1 cents, ", int(n3), \
"*0.05 cents, ", int(n4), "*0.01 cents."
pp13()
