python - AttributeError: 'str' object has no attribute 'fileno' -

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code:

import subprocess  def printit():     in range(6):         j in range(6):             query = "select rxpkts, txpkts ./log.csv datapath = "+str(i)+" , port = "+str(j)             filename = str(i)+"_"+str(j)+".csv"             open(filename, "w+"):                 p = subprocess.popen(["python", "q", "-h", "-d", ",", query], stdout=filename)  printit()

error:

$ python processlog.py  traceback (most recent call last):   file "processlog.py", line 11, in <module>     printit()   file "processlog.py", line 9, in printit     p = subprocess.popen(["python", "q", "-h", "-d", ",", query], stdout=filename)   file "/usr/lib/python2.7/subprocess.py", line 702, in __init__     errread, errwrite), to_close = self._get_handles(stdin, stdout, stderr)   file "/usr/lib/python2.7/subprocess.py", line 1128, in _get_handles     c2pwrite = stdout.fileno() attributeerror: 'str' object has no attribute 'fileno'

what issue? using q

the stdout argument needs file object, not string filename.

try using -

import subprocess  def printit():     in range(6):         j in range(6):             query = "select rxpkts, txpkts ./log.csv datapath = "+str(i)+" , port = "+str(j)             filename = str(i)+"_"+str(j)+".csv"             open(filename, "w+") f:                 p = subprocess.popen(["python", "q", "-h", "-d", ",", query], stdout=f)  printit()

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