练习
1.斐波那契数列
n = 8
n_1 = n_2 = result = 1
for x in range(3,n+1):
result = n_1 + n_2
n_2 = n_1
n_1 = result
print(result)
2.求100~200中间的素数
print('___________________')
sum1 = 0
for x in range(100,201):
count = 0
for y in range(2,x):
if x % y == 0:
count += 1
break
if count == 0:
print(x)
sum1 += 1
print('个数',sum1)
4.
fz = 2
fm = 1
for _ in range(20):
# print('%d/%d'%(fz,fm))
fz,fm = fz+fm,fz#fz,fm = 3,2fz = 3, fm = 2
print('%d/%d'%(fz,fm))
5.
num = 12343543
count = 0
while num != 0:
count += 1
print(num%10)
num //=10
print(count)
day6 - 作业 1. age = 30
if 0 print('幼儿')
elif 7 print('儿童')
elif 13 print('青年')
elif 25 print('中年')
else:
print('老年')
结果：
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1.JPG 2.
print('______________')
num = 1
for x in range(1,6):
num *= x
print(num)
结果：
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2.JPG 3.
print('3———————————————————————')
num = 1
sum1 = 0
for x in range(1,21):
num *= x
sum1 += num
print(sum1)
结果
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3.JPG 4.
num = 1
sum1 = 0
for x in range(1,21):
num *= x
sum1 += 1/num
print(sum1)
结果：
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4.JPG 5.
num = input('请输入一个大于0的数字(输入0结束):')
num = int(num)
sum1 = 0
while num != 0:
sum1 += num
num = input('请输入一个大于0的数字(输入0结束):')
num = int(num)
print('输入数字的和为：',sum1)
结果
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5.JPG 6.
a = int(input('请输入a的值'))
n = int(input('请输入次数'))
m = 0
num = 0
sum1 = 0
sum2 = 0
while m < n:
while m < n:
num = a*10**m
sum1 += num
m += 1
print(sum1)
sum2 += sum1
m += 1
print('和：',sum2)
结果：
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6.JPG
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7.JPG 7.
a = int(input('输入第一个整数：'))
b = int(input('输入第二个整数：'))
c = int(input('输入第三个整数：'))
if a > b:
t = a
a = b
b = t
if b > c:
t = b
b = c
c = t
if a > b:
t = a
a = b
b = t
print(a,b,c)
结果：
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8.JPG 8. a.
n = 5
while n > 0:
# print('*')
m = n
while m > 0:
print('*',end = '')
m -= 1
n -= 1
print('\n')
结果：
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9.JPG
n = 4
while n > 0:
# print('*')
m = n
while m > 0:
print('*',end = '')
m -= 1
n -= 1
print('\n')
结果
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10.JPG
【Python基础|Python基础 - 练习1】b.
