diff options
Diffstat (limited to 'Lib/textwrap.py')
| -rw-r--r-- | Lib/textwrap.py | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/Lib/textwrap.py b/Lib/textwrap.py index 355c469..ef6c372 100644 --- a/Lib/textwrap.py +++ b/Lib/textwrap.py @@ -22,20 +22,23 @@ class TextWrapper: Several instance attributes control various aspects of wrapping: - expand_tabs - if true (default), tabs in input text will be expanded - to spaces before further processing. Each tab will - become 1 .. 8 spaces, depending on its position in its line. - If false, each tab is treated as a single character. - replace_whitespace - if true (default), all whitespace characters in the input - text are replaced by spaces after tab expansion. Note - that expand_tabs is false and replace_whitespace is true, - every tab will be converted to a single space! - break_long_words - if true (default), words longer than the line width constraint - will be broken. If false, those words will not be broken, - and some lines might be longer than the width constraint. + expand_tabs (default: true) + Expand tabs in input text to spaces before further processing. + Each tab will become 1 .. 8 spaces, depending on its position in + its line. If false, each tab is treated as a single character. + replace_whitespace (default: true) + Replace all whitespace characters in the input text by spaces + after tab expansion. Note that if expand_tabs is false and + replace_whitespace is true, every tab will be converted to a + single space! + fix_sentence_endings (default: false) + Ensure that sentence-ending punctuation is always followed + by two spaces. Off by default becaus the algorithm is + (unavoidably) imperfect. + break_long_words (default: true) + Break words longer than the line width constraint. If false, + those words will not be broken, and some lines might be longer + than the width constraint. """ whitespace_trans = string.maketrans(string.whitespace, @@ -51,10 +54,14 @@ class TextWrapper: r'\w{2,}-(?=\w{2,})|' # hyphenated words r'(?<=\w)-{2,}(?=\w))') # em-dash + # Punctuation characters found at the end of a sentence. + sentence_end = ".?!" + def __init__ (self): self.expand_tabs = 1 self.replace_whitespace = 1 + self.fix_sentence_endings = 0 self.break_long_words = 1 @@ -100,10 +107,11 @@ class TextWrapper: space to two. """ i = 0 + punct = self.sentence_end while i < len(chunks)-1: # chunks[i] looks like the last word of a sentence, # and it's followed by a single space. - if (chunks[i][-1] == "." and + if (chunks[i][-1] in punct and chunks[i+1] == " " and islower(chunks[i][-2])): chunks[i+1] = " " @@ -207,7 +215,8 @@ class TextWrapper: if len(text) <= width: return [text] chunks = self._split(text) - self._fix_sentence_endings(chunks) + if self.fix_sentence_endings: + self._fix_sentence_endings(chunks) return self._wrap_chunks(chunks, width) def fill (self, text, width, initial_tab="", subsequent_tab=""): |