4-1
a = []
while True:
ctn = input('would u continue to input(yes/no):')
if ctn == 'yes':
num = int(input('plz input the num:'))
a.append(num)
else:
break
def get_avg(l):
sum = 0
for i in l:
sum += i
avg = sum / len(a)
return avg
print(get_avg(a))
4-2
import time
date = time.localtime()
year, month, day = date[:3]
day_month = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
if year%400==0 or (year%4==0 and year%100!=0):
day_month[1] = 29
days = 0
for m in range(month):
if month == 1:
days = day
else:
days += m
print(days)
4-3sucks
num = int(input('plz input the size:'))
def print_rhombus(n):
for i in range(n):
print((' * ' * i).center(n*3))
for j in range(n, 0, -1):
print((' * ' * j).center(n*3))
print_rhombus(num)
