Python-day6

1、条件表达式

num1=int(input('num1='))
num2=int(input('num2='))
print(str(num1)+'>='+str(num2) if num1>=num2 else str(num1)+'<='+str(num2))

2、pass语句

s=input('您是会员吗：Y/N')
if s=='Y':
    pass
else:
    pass

3、布尔值

age=int(input('您的年龄是：'))
if age:
    print(age)
else:
    print('年龄是',age)

4、range()

s1=range(12)
print(list(s1))
s2=range(12,44)
print(list(s2))
s3=range(12,44,2)
print(list(s3))
num=int(input('请输入要判断的数值：'))
print('num在数列1中',num in s1)
print('num在数列2中',num in s2)
print('num在数列3中',num in s3)

5、while

num=1
while num<=10:
    print(num)
    num+=1

num1=int(input('请输入起始数：'))
num2=int(input('请输入终止数：'))
sum=0
while num1<=num2:
    sum+=num1
    num1+=1
print('sum=',sum)

#1~100的偶数和
sum1=0
num=1
while num<=100:
    if num%2==0:#if not bool(num%2):
        sum1+=num
    else:
        sum1=sum1
    num+=1
print('sum1=',sum1)
#1~100的奇数和
sum2=0
num=1
while num<=100:
    if num%2:
        sum2+=num
    else:
        sum2=sum2
    num+=1
print('sum2=',sum2)

6、for-in循环

for i in range(100):
    print(i)
    for _ in range(100):
        print('hello')

sum=0
for i in range(1,101):
    if i%2==0:
        sum += i
print(sum)以下

#输出100-999之间的水仙花数，例如153=3*3*3+5*5*5+1*1*1
for i in range(100,1000):
    g=i%10
    s=i//10%10
    b=i//100
    if i==g**3+s**3+b**3:
        print(i)

7、break

for s in range(3):
    psw=input('请输入密码：')
    if psw=='123456':
        print('密码正确')
        break
    else:
        print('密码错误')

i=0
while i<3:
    psw = input('请输入密码')
    if psw=='123456':
        print('密码正确')
        break
    else:
        print('密码错误')
        i+=1

8、continue

#1-50之间所有5的倍数
#1-50之间所有5的倍数
for i in range(1,51):
    if(i%5!=0):
        continue
    print(i)