Matthew Wilson wrote: > I'm writing a command-line application and I want to search through lots > of text files for a string. Instead of writing the python code to do > this, I want to use grep. > > This is the command I want to run: > > $ grep -l foo dir > > In other words, I want to list all files in the directory dir that > contain the string "foo". > > I'm looking for the "one obvious way to do it" and instead I found no > consensus. I could os.popen, commands.getstatusoutput, the subprocess > module, backticks, etc. > > As of May 2009, what is the recommended way to run an external process > like grep and capture STDOUT and the error code?
subprocess. Which becomes pretty clear when reading it's docs: """ The subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. This module intends to replace several other, older modules and functions, such as: os.system os.spawn* os.popen* popen2.* commands.* """ Diez -- http://mail.python.org/mailman/listinfo/python-list
