text_format.py

defformat_text(text):
words=text.replace(',', ', ').split()

i=0
whileTrue:
try:
i=words.index(',', i)
words[i-1] +=words.pop(i)
exceptValueError:
break

max_word_length=max(len(word.rstrip(',')) forwordinwords)
max_line_length=max_word_length*3

lines= []
cur_line=''

forwordinwords:
iflen(cur_line) +len(word) + (bool(cur_line)) <=max_line_length:
ifcur_line:
cur_line+=' '
cur_line+=word
else:
lines.append(cur_line)
cur_line=word
ifcur_line:
lines.append(cur_line)

return'\n'.join(lines)

if__name__=='__main__':
importsys
input=sys.stdin.read().strip()
formatted_text=format_text(input)
print(formatted_text)