Python语言程序设计基础（3）—— 基本数据类型

天天向上

dayup,dayfactor = 1.0,0.01

for i in range(365):

    if i % 7 in [6,0]:

        dayup = dayup*(1-dayfactor)

    else:

        dayup = dayup*(1+dayfactor)

print("{:.2f}".format(dayup))

天天向上2

def dayUP(df):

    dayup = 1.0

    for i in range(365):

        if i % 7 in [6,0]:

            dayup = dayup*(1-0.01)

        else :

            dayup = dayup*(1+df)

    return dayup

dayfactor = 0.01

while dayUP(dayfactor) < 37.78:

    dayfactor+=0.01

print("{:.3f}".format(dayfactor))

获取星期字符串

weekstr = "星期一星期二星期三星期四星期五星期六星期日"

weekid = eval(input(""))

pos = (weekid-1)*3

print(weekstr[pos:pos+3])

凯撒密码

text = input()

for i in range(len(text)):

    if text[i] >= 'a' and text[i] <='z':

        print(chr(ord('a')+(ord(text[i])-ord('a')+3)%26),end='')

    else :

        print(text[i],end="")

文本精度条

import time

print("-------执行开始--------")

scale = 10

for i in range(scale+1):

    a = '**'*i

    b = '..'*(scale-i)

    c = (i/scale)*100

    print("%{:^3.0f}[{}->{}]".format(c,a,b))

    time.sleep(0.1)

print("-------执行结束--------")

单行刷新

import time

scale = 50

print("执行开始".center(scale,'-'))

t = time.clock()

for i in range(scale+1):

    a = '*'*i

    b = '.'*(scale-i)

    c = (i/scale)*100

    t-=time.clock()

    print("\r{:^3.0f}%[{}->{}]{:.2f}s".format(c,a,b,-t),\

          end='')

    time.sleep(0.05)

print("\n"+"执行结束".center(scale,'-'))

习题部分

回文

a = input()

flag = True

for i in range(len(a)//2):

    if a[i]!=a[len(a)-i-1]:

        flag = False

        break

    else:

        continue

if flag:

    print("YES")

else:

    print("NO")