a python error- too many values -

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i'm trying extract proper noun tagged file. problem the code i'm trying gives error :

traceback (most recent call last): file "e:\pt\paragraph", line 35, in <module> sen1= noun(mylist[s]) file "e:\pt\paragraph", line 5, in noun word, tag = word.split('/') valueerror: many values unpack

the code works fine texts gives error.

the code:

def noun(words): nouns = [] word in words.split(): word, tag = word.split('/')   if (tag.lower() == 'np'):     nouns.append(word); return nouns  def splitparagraph(paragraph):  import re paragraphs = paragraph.split('\n\n') return paragraphs  if __name__ == '__main__': import nltk rp = open("t3.txt", 'r') text = rp.read() mylist = [] para = splitparagraph(text)  s in para: mylist.append(s) s in range(len(mylist)-1): sen1= noun(mylist[s]) sen2= noun(mylist[s+1])

the i'm trying works if remove 1st paragraph other wise gives error.

sample of text:

a/at good/jj man/nn-hl departs/vbz-hl ./. goodbye/uh-hl ,/,-hl mr./np-hl sam/np-hl./. sam/np rayburn/np was/bedz a/at good/jj man/nn ,/, a/at good/jj american/np ,/, and/cc ,/, third/od ,/, a/at good/jj democrat/np ./. he/pps was/bedz all/abn of/in these/dts rolled/vbn into/in one/cd sturdy/jj figure/nn ;/. ;/. mr./np speaker/nn-tl ,/, mr./np sam/np ,/, and/cc mr./np democrat/np ,/, at/in one/cd and/cc the/at same/ap time/nn ./.  the/at house/nn-tl was/bedz his/pp$ habitat/nn and/cc there/rb he/pps flourished/vbd ,/, first/rb as/cs a/at young/jj representative/nn ,/, then/rb as/cs a/at forceful/jj committee/nn chairman/nn ,/, and/cc finally/rb in/in the/at post/nn for/in which/wdt he/pps seemed/vbd intended/vbn from/in birth/nn ,/, speaker/nn-tl of/in-tl the/at-tl house/nn-tl ,/, and/cc second/od most/ql powerful/jj man/nn in/in washington/np ./.

if remove 1st paragraph (a/at good/jj man/nn-hl departs...) code works. how solve problem.

thanks in advance.

your "word" contains more 1 "/". unpacking (tag, word) not work. you'll have figure out how want handle case tag/word has more 1 "/".

def noun(words):     nouns = []     word in words.split():         items = word.split('/')         if len(items) == 2:             tag, word = items         else:             # else parse      ....

i realized can use "maxsplit" option strings split method if want split on first "/".

>>> word = "a/b/c" >>> >>> word.split("/", 1) ['a', 'b/c']

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