Python經典基礎程式設計練習題（四） 每日10題

a = 2.0

b = 1.0
s = 0
for n in range(1,21):
s += a / b
t = a
a = a + b
b = t
print (s)

n = 0

s = 0
t = 1
for n in range(1,21):
t *= n
s += t
print ('1! + 2! + 3! + ... + 20! = %d' % s)

sum=0

def digui(n):
if n==0:
sum=1
else:
sum=n*digui(n-1)
return sum
print(digui(5))

def out(s,n):

if n == 0:
return
else:
print(s[n-1],end=' ')
out(s,n-1)
s=input('請輸入:')
#s=s.split(',')
n= len(s)
out(s,n)

def age(n):

if n == 1:
a=10
else:
a=age(n-1)+2
return a
print(age(5))

def jisuan(n):

l=while n!=0:
a=n%10
n=n//10
return l
n=int(input('請輸入:'))
l=jisuan(n)
a= len(l)
for i in range(a):
print(l[i],end=' ')

str=input('請輸入:')

a=int(str)
t=1for i in range(5//2):
if str[i] != str[5-i-1]:
t=0break
if t:
print('%d 是乙個回文數' % a)
else:
print('%d 不是乙個回文數' % a)

import datetime

if __name__ == '__main__':
# 輸出今日日期，格式為 dd/mm/yyyy。更多選項可以檢視 strftime() 方法
print(datetime.date.today().strftime('%d/%m/%y'))
# 建立日期物件
miyazakibirthdate = datetime.date(1998,3,18)
print(miyazakibirthdate.strftime('%d/%m/%y'))
# 日期算術運算
miyazakibirthnextday = miyazakibirthdate + datetime.timedelta(days=1)
print(miyazakibirthnextday.strftime('%d/%m/%y'))
# 日期替換
miyazakifirstbirthday = miyazakibirthdate.replace(year=miyazakibirthdate.year + 1)
print(miyazakifirstbirthday.strftime('%d/%m/%y'))

t=0

for i in range(ord('x'),ord('z') + 1):#a選手
for j in range(ord('x'),ord('z') + 1):#b選手
if i != j:
for k in range(ord('x'),ord('z') + 1):#c選手
if (i != ord('x')) and (k != ord('x')) and (k != ord('z')):#如果a不和x，c不和x和z
print('order is a -- %s\t b -- %s\tc -- %s' % (chr(i), chr(j), chr(k)))
t=1break
if t==1:
break
if t==1:
break

letter = input("please input:")

if letter == 's':
letter = input("please input second letter:")
if letter == 'a':
print('saturday')
elif letter == 'u':
print('sunday')
else:
print('data error')
elif letter == 'f':
print('friday')
elif letter == 'm':
print('monday')
elif letter == 't':
letter = input("please input second letter:")
if letter == 'u':
print('tuesday')
elif letter == 'h':
print('thursday')
else:
print('data error')
elif letter == 'w':
print('wednesday')
else:
print('data error')

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