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Tomas-lee-git
python
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python
/
python_crash_course
/
python_work
/
dog.py
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30 lines (23 loc) · 1.22 KB
main
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python
/
python_crash_course
/
python_work
/
dog.py
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"""一个描述狗狗属性和方法的类"""
class
Dog
:
# 在 Python 中,首字母大写的名称指的是:类
"""一次模拟小狗的简单尝试"""
def
__init__
(
self
,
name
,
age
):
# 使用类来创建实例时,会自动调用这个方法
"""初始化属性 name 和 age"""
# 与实例相关的方法,会自动传入实参 self(指向实例本身的引用),让实例访问类的属性和方法
# print(type(self)) # <class '__main__.Dog'>
# 以 self 为前缀的变量可供类中的所有方法使用,可以通过类的任意实例来访问
self
.
name
=
name
# 使用 . 来设置实例的属性
self
.
age
=
age
def
sit
(
self
):
"""模拟小狗收到命令时坐下"""
print
(
f"
{
self
.
name
}
is now sitting."
)
def
roll_over
(
self
):
"""模拟小狗收到命令时打滚"""
print
(
f"
{
self
.
name
}
rolled over!"
)
def
check_dog_instance
(
instance
):
print
(
instance
)
# <__main__.Dog object at 0x10ed9b110>
print
(
f"My dog's name is
{
instance
.
name
}
"
)
# 使用 . 来访问实例的属性
print
(
f"My dog's age is
{
instance
.
age
}
"
)
instance
.
sit
()
# instance_name.function_name()
instance
.
roll_over
()
print
(
"=========="
)
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