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四则运算2.0
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四则运算2.0
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import profile
import random
from fractions import Fraction
#四则运算2.0
def count():
sign = ['＋', '－', '×', '÷']
f = random.randint(0, 3)
m = random.randint(0, 1)
n1 = random.randint(1, 20)
n2 = random.randint(1, 20)
key = 0
if f == 0:#加法
key = n1 + n2
elif f == 1:#减法，要先比较大小，防止输出负数
n1, n2 = max(n1, n2), min(n1, n2)
key = n1 - n2
elif f == 2:#乘法
key = n1 * n2
elif f == 3:#除法，分母不可以为0
n1, n2 = max(n1, n2), min(n1, n2)
while n1 % n2 != 0:
n1 = random.randint(1, 10)
n2 = random.randint(1, 10)
n1, n2 = max(n1, n2), min(n1, n2)
key = int(n1 / n2)
print(n1, sign[f], n2, '= ', end='')
return key
def fraction ():
sign = ['＋', '－', '×', '÷']
f = random.randint(0, 3)
n1 = random.randint(1, 20)
n2 = random.randint(1, 20)
n3 = random.randint(1, 20)
n4 = random.randint(1, 20)
key = 0
n1, n2 = min(n1, n2), max(n1, n2)#把n1，n2中小的放在前面，保证f1为真分数
n3, n4 = min(n3, n4), max(n3, n4)#把n3，n4中小的放在前面，保证f2为真分数
f1 = Fraction(n1, n2)#初始化f1为n1/n2
f2 = Fraction(n3, n4)#初始化f2为n3/n4
if f == 0:#加法
key = f1 + f2
elif f == 1:#减法，要先比较大小，防止输出负数
f1, f2 = max(f1, f2), min(f1, f2)
key = f1 - f2
elif f == 2:#乘法
key = f1 * f2
elif f == 3:#除法，分母不可以为0
f1, f2 = max(f1, f2), min(f1, f2)
while n1 % n2 != 0:
n1 = random.randint(1, 10)
n2 = random.randint(1, 10)
n3 = random.randint(1, 10)
n4 = random.randint(1, 10)
n1, n2 = max(n1, n2), min(n1, n2)
n3, n4 = max(n3, n4), min(n3, n4)
key = Fraction(f1 / f2)
print(f1, sign[f], f2, '= ', end='')
return key
print('小学四则运算')
print('输入‘1’测试效能，输入‘2’整数运算，输入‘3’真分数运算')
n = int(input())
#当输入1时，测试效能
if n==1:
profile.run('count()')
#当输入2时，整数运算
if n==2:
while True:
key = count()
j = input()
s = int(j)
if s == key :
print('right')
else:
print('error,the answer is',key)
#当输入3时，真分数运算
if n==3:
while True:
key = fraction()
j = input()
s = eval(j)
print('the answer is',key)