python中包的用法

先给一个简单的例子:
这是文件的结构:

run.py
package
| -- __init__.py
| -- fun1.py
| -- fun2.py

run.py

from package.fun1 import fun1
from package.fun2 import fun2

fun1()
fun2()

fun1.py

def fun1():
  print("fun1 is being used")

fun2.py

def fun2():
  print("fun2 is being used")

init.py置空, 用于标识当前文件夹是一个包\

输出结果

fun1 is being used
fun2 is being used