将参数传递给 subprocess.Popen

Question

Need to call grep from python grep command: grep -B 5 -A 5 "make.*Error|Error-" file

Tried various combinations of escaping the regex make it work with subprocess.Popen

proc = subprocess.Popen(['grep','-B 5', '-A 5', r'"make.*Error|Error-"', file], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

Am I missing some sort of escape characters to pass that regex correctly to grep?

Appreciate the help

Answer 1

changed grep to egrep and used the following format to pass regex and it worked!

proc = subprocess.Popen(['egrep','-C 5', r"Error-|make.*Error", 'file.log'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)