Region: IOError: [Errno 22] invalid mode ('w') or filename

Question

I'm not sure why, but for some reason, whenever I have "region" in the file name of the output file, it gives me this error:

IOError: [Errno 22] invalid mode ('w') or filename: 'path\regionlog.txt'

It does this for "region.txt", "logregion.txt", etc.

class writeTo:
    def __init__(self, stdout, name):
       self.stdout = stdout
       self.log = file(name, 'w') #here is where it says the error occurs

output = os.path.abspath('path\regionlog.txt')
writer = writeTo(sys.stdout, output) #and here too

Why is this? I really would like to name my file "regionlog.txt" but it keeps coming up with that error. Is there a way around it?

Answer 1

Use forward slashes:

'path/regionlog.txt'

Or raw strings:

r'path\regionlog.txt'

Or at least escape your backslashes:

'path\\regionlog.txt'

---

\r is a carriage return.

---

Another option: use os.path.join and you won't have to worry about slashes at all:

output = os.path.abspath(os.path.join('path', 'regionlog.txt'))