|  Methods:
 |  
 |  __init__(linejunk=None, charjunk=None)
 |      Construct a text differencer, with optional filters.
 |  
 |  compare(a, b)
 |      Compare two sequences of lines; generate the resulting delta.
 |  
 |  Methods defined here:
 |  
 |  __init__(self, linejunk=None, charjunk=None)
 |      Construct a text differencer, with optional filters.
 |      
 |      The two optional keyword parameters are for filter functions:
 |      
 |      - `linejunk`: A function that should accept a single string argument,
 |        and return true iff the string is junk. The module-level function
 |        `IS_LINE_JUNK` may be used to filter out lines without visible
 |        characters, except for at most one splat ('#').  It is recommended
 |        to leave linejunk None; the underlying SequenceMatcher class has
 |        an adaptive notion of "noise" lines that's better than any static
 |        definition the author has ever been able to craft.
 |      
 |      - `charjunk`: A function that should accept a string of length 1. The
 |        module-level function `IS_CHARACTER_JUNK` may be used to filter out
 |        whitespace characters (a blank or tab; **note**: bad idea to include
 |        newline in this!).  Use of IS_CHARACTER_JUNK is recommended.
 |  
 |  compare(self, a, b)
 |      Compare two sequences of lines; generate the resulting delta.
 |      
 |      Each sequence must contain individual single-line strings ending with
 |      newlines. Such sequences can be obtained from the `readlines()` method
 |      of file-like objects.  The delta generated also consists of newline-
 |      terminated strings, ready to be printed as-is via the writeline()
 |      method of a file-like object.
 |      
 |      Example: