Jonathan Karon wrote:
This is likely happening because the last line of the file is blank.
"data\ndata\n".split('\n') will return 3 values - 2 with the text "data" and
one a string with 0 length
The simplest thing to do is this:
for line in infile.read().split('\n'):
if not len(line.strip()): continue # ignore blank lines
if not line.strip(): continue # no need for the len() check
# ... existing code here ...
From http://docs.python.org/tutorial/inputoutput.html#methods-of-file-objects :
" f.readline() reads a single line from the file; a newline character (\n) is left
at the end of the string "
The last element of your chems list will still contain that trailing linefeed.
Try this when initially loading the chems list:
chems = [c.strip() for c in infile.readline().split(',')]
or, if not concerned about whitespace in the element headers:
chems = infile.readline().strip().split(',')
~Ethan~
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