#D:\编程\Python\maths.py
def mydef():
while True:
try:
a = 1
b = 0
c = input('请输入一个数字:')
c = eval(c)
d=c**0.5
e=int(d)
for i in range(e):
if c % a == 0:
b += 1
if a < c:
a += 1
if b >= 2:
print('这是一个合数')
else:
print('这是一个质数')
except:
print("错误")
exit()
while True:
try:
a = 1
b = 0
c = input('请输入一个数字:')
c = eval(c)
d=c**0.5
e=int(d)
for i in range(e):
if c % a == 0:
b += 1
if a < c:
a += 1
if b >= 2:
print('这是一个合数')
else:
print('这是一个质数')
except:
print("错误")
exit()