蟒蛇系統調用

Question

有困難的時候瞭解如何讓Python調用系統函數...

the_file = ('logs/consolidated.log.gz')   
webstuff = subprocess.Popen(['/usr/bin/zgrep', '/meatsauce/', the_file ],stdout=subprocess.PIPE) % dpt_search 
    for line in webstuff.stdout: 
     print line 

試圖讓蟒蛇建立與我的搜索字符串的另一個文件。

謝謝！

Answer 1

我推薦道格·赫爾曼誰（的引用）PyMotW Subprocess page「讀取文檔，所以你不必」

從

除了：

f = file('sourcefile') 
for line in f: 
    if 'pattern' in line: 
      # mind the , at the end, 
      # since there's no stripping involved 
      # and print adds a newline without it 
      print line, 

如果需要分開匹配的正則表達式

從Python Standard Library documentation for the re module的文檔也參考PyMotW Regular Expression page