Reading files, splitting on a delimiter and newlines.
bdesth.quelquechose at free.quelquepart.fr
Mon Jul 23 01:17:21 CEST 2007
attn.steven.kuo at gmail.com a écrit :
> On Jul 25, 8:46 am, chris... at gmail.com wrote:
>>I have a situation where I have a file that contains text similar to:
>>myValue1 = contents of value1
>>myValue2 = contents of value2 but
>> with a new line here
>>myValue3 = contents of value3
>>My first approach was to open the file, use readlines to split the
>>lines on the "=" delimiter into a key/value pair (to be stored in a
>>After processing a couple files I noticed its possible that a newline
>>can be present in the value as shown in myValue2.
>>In this case its not an option to say remove the newlines if its a
>>"multi line" value as the value data needs to stay intact.
>>I'm a bit confused as how to go about getting this to work.
>>Any suggestions on an approach would be greatly appreciated!
> Check the length of the list returned from split; this allows
> your to append to the previously extracted value if need be.
> import StringIO
> import pprint
> buf = """\
> myValue1 = contents of value1
> myValue2 = contents of value2 but
> with a new line here
> myValue3 = contents of value3
> mockfile = StringIO.StringIO(buf)
> for line in mockfile:
> kvpair = line.split('=', 2)
You want :
kvpair = line.split('=', 1)
>>> toto = "x = 42 = 33"
>>> toto.split('=', 2)
['x ', ' 42 ', ' 33']
> if len(kvpair) == 2:
> key, value = kvpair
> record[key] = value
> record[key] += line
Also, this won't handle the case where the first line doesn't contain an
'=' (NameError, name 'key' is not defined)
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