python3 不同目錄間模塊調用

#Author by Andy
#_*_ coding:utf-8 _*_
#__file__獲取當前程序的相對路徑
import os,sys
#print(__file__)
# os.path.abspath(__file__) 獲取當前程序的絕對路徑
print(os.path.abspath(__file__))
# E:\my python study\day4\Atm\bin\atm.py
Path=os.path.abspath(__file__)
# print(os.path.dirname(Path))獲取當前程序的父目錄的絕對路徑
BASE_DIR=os.path.dirname(os.path.dirname(Path))
print(BASE_DIR)
# E:\my python study\day4\Atm
#將BASE_DIR添加到系統環境變量中
sys.path.append(BASE_DIR)
from core import main
main.wel()