regex - python reg exp: how to delete a field delimited by [ and ] from a string -

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i have file , every line looks this:

2013-04-23 16:04:12.276 bla[16878:950f] 'asdf' : 0, 'asds': 0, 'adf': 0

i need replace part bla[16878:950f] , .

note text bla same, text within [and ] different , can have different length.

what need @ end is: 

2013-04-23 16:04:12.276, 'asdf' : 0, 'asds': 0, 'adf': 0

any ideas? i'm bad @ regular expressions, think way.

thanks

>>> import re >>> line = "2013-04-23 16:04:12.276 bla[16878:950f] 'asdf' : 0, 'asds': 0, 'adf': 0" >>> re.sub(r'bla\[[^\]]+\]', ',', line) "2013-04-23 16:04:12.276 , 'asdf' : 0, 'asds': 0, 'adf': 0"

i think want replace spacebla[16878:950f] though: add space in if wish


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