Python常用API及其效果实现------Python_python apl

a = 100;
b = 500;
if a > b:
    print("A大一些");
else:
    print("B大一些");
import random;
 
print(random.randint(1, 100));
 
 
class Cat:
    @staticmethod
    def eat():
        print("猫吃鱼")
 
    def sleep(self):
        print("猫睡觉")
 
 
cat = Cat()
Cat.eat()
cat.eat()
cat.sleep()
list = ["哈哈", "哈哈哈", "哈哈哈哈", 1, True]
 
# for 变量 in 可以迭代的对象:
#     pass
range(1, 10)
str = 'hello'
# java  数组：  列表、元祖
 
for i in str:
    print(i)
 
 
def sum_2_num(num1, num2):
    result = num1 + num2
 
    print("%d + %d = %d" % (num1, num2, result))
 
 
sum_2_num(30, 40)
 
 
class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age
        print("孩子被生出来了")
 
    def __del__(self):
        print("人死了")
 
    def __str__(self):
        print("人的生平介绍")
 
 
p = Person('zhangsan', 19)
print(p.age)
print(p.name)
p.__str__()
 
 
class Student(Person, Cat):
    def __init__(self):
        print("学生出生了");
 
 
# stu = Student();
# stu.__str__();
# stu.eat();
# stu.sleep();
 
 
try:
    int('abc')
except:
    print("有异常")
'
运行
运行

a = 100;
b = 500;
if a > b:
    print("A大一些");
else:
    print("B大一些");
import random;

print(random.randint(1, 100));


class Cat:
    @staticmethod
    def eat():
        print("猫吃鱼")

    def sleep(self):
        print("猫睡觉")


cat = Cat()
Cat.eat()
cat.eat()
cat.sleep()
list = ["哈哈", "哈哈哈", "哈哈哈哈", 1, True]

# for 变量 in 可以迭代的对象:
#     pass
range(1, 10)
str = 'hello'
# java  数组：  列表、元祖

for i in str:
    print(i)


def sum_2_num(num1, num2):
    result = num1 + num2

    print("%d + %d = %d" % (num1, num2, result))


sum_2_num(30, 40)


class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age
        print("孩子被生出来了")

    def __del__(self):
        print("人死了")

    def __str__(self):
        print("人的生平介绍")


p = Person('zhangsan', 19)
print(p.age)
print(p.name)
p.__str__()


class Student(Person, Cat):
    def __init__(self):
        print("学生出生了");


# stu = Student();
# stu.__str__();
# stu.eat();
# stu.sleep();


try:
    int('abc')
except:
    print("有异常")