1.用python調(diào)用python腳本

#!/usr/local/bin/python3.7import timeimport os count = 0str = (’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’)

另外一個(gè)python腳本b.py如下：

#!/usr/local/bin/python3.7print(’hello world’)

運(yùn)行結(jié)果：

[python@master2 while]$ python a.py hello worldthis count is: 1this count is: 2this count is: 3this count is: 4this count is: 5this count is: 6this count is: 7this count is: 8Good Bye

2.python調(diào)用shell方法os.system()

#!/usr/local/bin/python3.7import timeimport os count = 0n = 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腳本如下：

#!/bin/shecho 'hello world'

運(yùn)行結(jié)果：

[python@master2 while]$ python a.py hello worldthis count is: 1this count is: 2this count is: 3this count is: 4this count is: 5this count is: 6this count is: 7this count is: 8Good Bye

3.python調(diào)用shell方法os.popen()

#!/usr/local/bin/python3.7import timeimport os count = 0n = 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’)

運(yùn)行結(jié)果：

[python@master2 while]$ python a.py <os._wrap_close object at 0x7f7f89377940>[’hello worldn’]this count is: 1this count is: 2this count is: 3this count is: 4this count is: 5this count is: 6this count is: 7this count is: 8Good Bye

os.system.popen() 這個(gè)方法會(huì)打開一個(gè)管道，返回結(jié)果是一個(gè)連接管道的文件對(duì)象，該文件對(duì)象的操作方法同open()，可以從該文件對(duì)象中讀取返回結(jié)果。如果執(zhí)行成功，不會(huì)返回狀態(tài)碼，如果執(zhí)行失敗，則會(huì)將錯(cuò)誤信息輸出到stdout，并返回一個(gè)空字符串。這里官方也表示subprocess模塊已經(jīng)實(shí)現(xiàn)了更為強(qiáng)大的subprocess.Popen()方法。

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