Python IndentationError: unexpected indent

Question

Here is my code ... I am getting indentation error but i don't know why it occurs.

->

# loop while d <= end_date:     # print d.strftime("%Y%m%d")     fecha = d.strftime("%Y%m%d")     # set url     url = 'http://www.wpemergencia.omie.es//datosPub/marginalpdbc/marginalpdbc_' + fecha + '.1'     # Descargamos fichero     response = urllib2.urlopen(url)     # Abrimos fichero     output = open(fname,'wb')     # Escribimos fichero     output.write(response.read())     # Cerramos y guardamos fichero     output.close()     # fecha++     d += delta 

Answer 1

Run your program with

python -t script.py 

This will warn you if you have mixed tabs and spaces.

On *nix systems, you can see where the tabs are by running

cat -A script.py 

and you can automatically convert tabs to 4 spaces with the command

expand -t 4 script.py > fixed_script.py 

PS. Be sure to use a programming editor (e.g. emacs, vim), not a word processor, when programming. You won't get this problem with a programming editor.

PPS. For emacs users, M-x whitespace-mode will show the same info as cat -A from within an emacs buffer!

Answer 2

find all tabs and replaced by 4 spaces in notepad ++ .It worked.