python - Splitting string into different line lengths -


i'm trying split variable length string across different predefined line lengths. i've thrown code below fails on key error 6 when plonk python tutor (i don't have access proper python ide right now) guess means while loop isn't working , it's trying keep incrementing linenum i'm not sure why. there better way this? or fixable?

the code:

import re  #dictionary containing line number key , max line length linelengths = {         1:9,         2:11,         3:12,         4:14,         5:14                }  inputstr = "this long desc 7x7 needs splitting"        #test string, should split on spaces , around "x"  splitted = re.split("(?:\s|((?<=\d)x(?=\d)))",inputstr)     #splits inputstr on white space , x surrounded numbers eg. dimensions  linenum = 1                         #initialises line number @ 1  linestr1 = ""                           #initialises each line string linestr2 = "" linestr3 = "" linestr4 = "" linestr5 = ""  #dictionary creating dynamic line variables linenumdict = {         1:linestr1,         2:linestr2,         3:linestr3,         4:linestr4,         5:linestr5         }  if len(inputstr) > 40:     print "the short description longer 40 characters" else:     while linenum <= 5:         word in splitted:             if word != none:                 if len(linenumdict[linenum]+word) <= linelengths[linenum]:                     linenumdict[linenum] += word                 else:                     linenum += 1             else:                 if len(linenumdict[linenum])+1 <= linelengths[linenum]:                     linenumdict[linenum] += " "                 else:                     linenum += 1  lineout1 = linestr1.strip() lineout2 = linestr2.strip() lineout3 = linestr3.strip() lineout4 = linestr4.strip() lineout5 = linestr5.strip()

i've taken @ answer don't have real understanding of c#: split large text string variable length strings without breaking words , keeping linebreaks , spaces

it doesn't work because have for words in splitted loop inside loop linelen condition. have this:

    if len(inputstr) > 40:         print "the short description longer 40 characters"     else:         word in splitted:             if linenum > 5:                  break             if word != none:                 if len(linenumdict[linenum]+word) <= linelengths[linenum]:                     linenumdict[linenum] += word                 else:                     linenum += 1             else:                 if len(linenumdict[linenum])+1 <= linelengths[linenum]:                     linenumdict[linenum] += " "                 else:                     linenum += 1

also linestr1, linestr2 , on won't changed, have access dict directly (strings immutable). tried , got results working:

    print("lines: %s" % linenumdict)

gives:

    lines: {1: 'this a', 2: 'long desc 7', 3: '7 needs ', 4: '', 5: ''}

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