Python练习
Published in：2020-07-08 |

python 习题练习

python练习

1.华氏温度转换 （转换公式为：**$C=(F - 32) \div 1.8$**）

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f = float(input('请输入温度：'))
c = (f-32)/1.8
print('%.1f华氏度 = %.1f摄氏度'%(f,c))
print(f'{f:.1f}华氏度 = {c:.1f}摄氏度')

2.输入圆的半径计算圆的面积和周长

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radius = float(input('请输入圆的半径：'))
perimeter = 2*3.1416*radius
area = 3.1416*radius*radius
print('周长：%.2f'%perimeter)
print('面积：%.2f'%area)

3.判断输入年份是否为闰年

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year = int(input('年份：'))
is_leap = year%4 == 0  and  year % 100 !=0 or year % 400 ==0
print(is_leap)

4：英制单位英寸与公制单位厘米互换。

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value = float(input('长度:'))
unit = input('请输入单位：')
if unit =  'in' or unit = '英寸'：
    print('%f英寸 = %f厘米' %(value,value*2.54))
elif unit == 'cm' or unit == '厘米'：
	print('%f厘米 = %英寸' %(value,value/2.54))
else:
    print('请输入有效的单位！！')

5:百分制成绩转换为等级制成绩。

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score = float(input('请输入成绩: '))
if score >= 90:
    grade = 'A'
elif score >= 80:
    grade = 'B'
elif score >= 70:
    grade = 'C'
elif score >= 60:
    grade = 'D'
else:
    grade = 'E'
print('对应的等级是:', grade)

6:输入三条边长，如果能构成三角形就计算周长和面积。

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a = float(input('a = '))
b = float(input('b = '))
c = float(input('c = '))
if a + b > c and a + c > b and b + c > a:
    print('周长: %f' % (a + b + c))
    p = (a + b + c) / 2
    area = (p * (p - a) * (p - b) * (p - c)) ** 0.5
    print('面积: %f' % (area))
else:
    print('不能构成三角形')

t5PFGg.png
t5PBV8.png

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# # 1.
# sum = 0
# for i in range(0, 101):
#     sum += i
# print(sum)

# # 2.
# sum = 0
# while 1:
#     for i in range(1,100,2):
#         print(i)
#         sum += i
#     break
# print(sum)

# # 3.
# n = int(input('请输入一个小于10的整数：'))
# result = 1
# if n < 10 and n !=0:
#     while 1:
#         result *= n
#         n -= 1
#         if n == 1:
#             break
#     print(result)
# else:
#     print('输入不合法，请重新输入！！')

# n = int(input('请输入一个小于10的整数：'))
# result = 1
# if n < 10 and n !=0:
#     for i in range(0,n+1):
#         result *= n
#         n -= 1
#         if n == 1:
#             break
#     print(result)
# else:
#     print('输入不合法，请重新输入！！')

# # 4.
# sum = 0
# for i in range(0, 101):
#     if i % 3 == 0 and i % 5 != 0:
#        #print(i)
#        sum +=i
# print(sum)
# 1368

# # 5.cock公鸡 hen母鸡 小鸡chick
# cock = 0
# hen = 0
# for cock in range(1, 101):
#     for hen in range(1, 101):
#         chick = 100 - cock - hen
#         if (chick // 3 + cock * 3 + hen * 2) ==100 and chick % 3 == 0:
#             print(cock,hen,chick)

# # 6.
# male = 0
# female = 0
# for male in range(36):
#     for female in range(36):
#         child = 36 - male - female
#         if (male * 4 + female * 3 + child * 0.5) == 36:
#             print(male, female, child)

# # 7.
# for i in range(1000,10000):
#     cd = i%100
#     ab = (i-i%100)/100
#     if (ab+cd)**2 ==i:
#         print(i)
# 2025
# 3025
# 9801

# # 8.
# n=int(input("请输入一个整数:"))
# for i in range(n):
#     print("  "*(n-i-1),end='')
#     print(" *"*(2*i+1))

# # 9.
# for i in range(1,10):
#     for j in range(1,i+1):
#         print(j,'*',i,'=',i*j,end=' ')
#     print()
# 1 * 1 = 1
# 1 * 2 = 2 2 * 2 = 4
# 1 * 3 = 3 2 * 3 = 6 3 * 3 = 9
# 1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16
# 1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25
# 1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36
# 1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49
# 1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64
# 1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81

# 10.
# for i in range(100, 1000):
#     if (i // 100) ** 3 + (((i % 100 - i % 10)) / 10) ** 3 + (i % 10) ** 3 == i:
#         print(i)
# 153
# 370
# 371
# 407

# 11.
# number = int(input("请输入一个整数："))
# sum = 0
# n = number
# while n:
#     left = n % 10
#     n = n // 10
#     sum +=left
# print(str(number) + "的各位数的和为：" + str(sum))

# 12.
# n = int(input("请输入一个整数："))
# for i in range(2, int(n ** 0.5)):
#     if n % i == 0:
#         print(n, "不是质数")
#     else:
#         print(n, "是质数")


# n = int(input("请输入一个整数："))
# if n > 1:
#     for i in range(2, n):
#         if (n % i) == 0:
#             print(n, '不是质数')
#             break
#     else:
#         print(n, "是质数")
# else:
#     print('不是质数')
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