python怎样去调用其他脚本?3种调用方式介绍
发布时间:2020-12-10 12:05:05
1.用python调用python脚本
#!/usr/local/bin/python3.7 import time import os count = 0 str = ('python b.py') result1 = os.system(str) print(result1) while True: count = count + 1 if count == 8: print('this count is:',count) break else: time.sleep(1) print('this count is:',count) print('Good Bye')
其余一个python脚本b.py给出:
#!/usr/local/bin/python3.7 print('hello world')
运行结果:
[python@master2 while]$ python a.py hello world this count is: 1 this count is: 2 this count is: 3 this count is: 4 this count is: 5 this count is: 6 this count is: 7 this count is: 8 Good Bye
2.python调用shell方式os.system()
''' 遇到问题没人解答?小编创建了一个Python学习交流QQ群:579817333 寻找有志同道合的小伙伴,互帮互助,群里还有不错的视频学习教程和PDF电子书! ''' #!/usr/local/bin/python3.7 import time import os count = 0 n = os.system('sh b.sh') while True: count = count + 1 if count == 8: print('this count is:',count) break else: time.sleep(1) print('this count is:',count) print('Good Bye')
shell脚本给出:
#!/bin/sh echo "hello world"
运行结果:
[python@master2 while]$ python a.py hello world this count is: 1 this count is: 2 this count is: 3 this count is: 4 this count is: 5 this count is: 6 this count is: 7 this count is: 8 Good Bye
3.python调用shell方式os.popen()
''' 遇到问题没人解答?小编创建了一个Python学习交流QQ群:579817333 寻找有志同道合的小伙伴,互帮互助,群里还有不错的视频学习教程和PDF电子书! ''' #!/usr/local/bin/python3.7 import time import os count = 0 n = os.system('sh b.sh') while True: count = count + 1 if count == 8: print('this count is:',count) break else: time.sleep(1) print('this count is:',count) print('Good Bye')
运行结果:
[python@master2 while]$ python a.py <os._wrap_close object at 0x7f7f89377940> ['hello world\n'] this count is: 1 this count is: 2 this count is: 3 this count is: 4 this count is: 5 this count is: 6 this count is: 7 this count is: 8 Good Bye
os.system.popen()这种方式会开启一个管道,返回结果是一个连接管道的文件对象,该文件对象的操作步骤同open(),能够从该文件对象中获取返回结果。假如执行成功,并不会返回状态码,假如执行失败,则会将错误信息输出到stdout,并返回一个空字符串。这边官方也表明subprocess模块早已实现了更为强大的subprocess.Popen()方式。

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