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From: Peter Otten <__peter__@web.de>
Subject: Re: Reading files in from the proper directory
Date: Tue, 07 Feb 2012 21:16:57 +0100
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:19981

SMac2347@comcast.net wrote:

> xls_files   = glob.glob(in_dir + "*.xls")

Try changing that to

pattern = os.path.join(in_dir, "*.xls")
xls_files = glob.glob(pattern) 

os.path.join() inserts a (back)slash between directory and filename if 
necessary.

> merge_xls(in_dir="C:\Documents and Settings\smacdon\Desktop\09 Aggregate JWS")

If you paste the directory name literal into the interactive interpreter 
you'll be surprised:

>>> "C:\Documents and Settings\smacdon\Desktop\09 Aggregate JWS"
'C:\\Documents and Settings\\smacdon\\Desktop\x009 Aggregate JWS'

"\09" is intrpreted as chr(9). Use a raw string to prevent Python from 
interpreting a backslash as the start of an escape sequence

>>> r"C:\Documents and Settings\smacdon\Desktop\09 Aggregate JWS"
'C:\\Documents and Settings\\smacdon\\Desktop\\09 Aggregate JWS'

or use forward slashes as directory separators.