Q:

Writing to a new directory in Python without changing directory

Currently, I have the following code...
file_name = content.split('=')[1].replace('"', '') #file, gotten previously
fileName = "/" + self.feed + "/" + self.address + "/" + file_name #add folders 
output = open(file_name, 'wb')
output.write(url.read())
output.close()

My goal is to have python write the file (under file_name) to a file in the "address" folder in the "feed" folder in the current directory (IE, where the python script is saved)
I've looked into the os module, but I don't want to change my current directory and these directories do not already exist.

A:

First, I'm not 100% confident I understand the question, so let me state my assumption:
1) You want to write to a file in a directory that doesn't exist yet.
2) The path is relative (to the current directory).
3) You don't want to change the current directory.
So, given that:
Check out these two functions: os.makedirs and os.path.join.  Since you want to specify a relative path (with respect to the current directory) you don't want to add the initial "/".
dir_path = os.path.join(self.feed, self.address)  # will return 'feed/address'
os.makedirs(dir_path)                             # create directory [current_path]/feed/address
output = open(os.path.join(dir_path, file_name), 'wb')

A:

This will create the file feed/address/file.txt in the same directory as the current script:
import os

file_name = 'file.txt'
script_dir = os.path.dirname(os.path.abspath(__file__))
dest_dir = os.path.join(script_dir, 'feed', 'address')
try:
    os.makedirs(dest_dir)
except OSError:
    pass # already exists
path = os.path.join(dest_dir, file_name)
with open(path, 'wb') as stream:
    stream.write('foo\n')

