python语句

输出
age = 11
name = "冬冬"
score = 95.6
print("%s今年%d岁,我考了%.2f分" % (name,age,score))
其他格式化方式

print("我叫{} \n,我今年{} \n,我语文考了{}分".format(name,age,score))


练习

nameTest = "豆豆"

qq = 342135687
phone = 18756325897
address = "上海市浦东新区"
result = "==========我的名片========== \n 姓名 ：{} \n QQ ：{} \n 手机号 ：{} \n 公司地址 ：{} \n ======================"

print(result.format(nameTest,qq,phone,address))

输入

a = input("请输入内容")
print(type(a))
print("您输入的变量是：{}".format(a))


运算符

a = 10
b = 20
print(a+b)
print(a-b)
print(a*b)
print(a/b)
print(b//a)取整除
print(b%a) 取余
print(b**a)

# b= b+a
b+=a
print(b)

数据类型转换

# str无法转float，任何数据类型可以转str
a = 123
a = str(a)
a = float(a)
a = int(a)
# 去掉引号
a = eval(a)
print(type(a))

逻辑控制

age = 17
if age>= 18:
    print("可以进入网吧上网")
else:
    print("不可以进入网吧上网")

score = 95
if score < 60:
    print("及格")
elif 60<=score<85:
    print("良好")
else:
    print("优秀")

if嵌套语句

# 去火车站坐火车，有票才能进站，没有票不能进站，刀大于10cm
ticket = 1
knife = 9
if ticket == 1:
    if knife < 10:
        print("进入火车站")
    else: print("安检未通过")
else:
    print("没有票无法进站")

循环语句

i = 0
while i < 100:
    i += 1
    print("继续执行{}".format(i))

while循环应用

# 计算1到100的累计和
i= 1
sum = 1
while i <= 100:
    sum = sum+i
    i += 1

print(sum)

for循环

name = "zhangsan"
for i in name:
    print(i)

break和continue

for i in range(0,10):
    if i == 5:
        continue #结束当次循环
        # break 结束当前循环
    print(i)

随机数

import random

a = random.randint(1,3)
print(a)