87     def __init__(self, indent_with, add_line_information=False):  argument
88         self.result = []
89         self.indent_with = indent_with
90         self.add_line_information = add_line_information
91         self.indentation = 0
92         self.new_lines = 0
94     def write(self, x):  argument
95         if self.new_lines:
96             if self.result:
97                 self.result.append('\n' * self.new_lines)
98             self.result.append(self.indent_with * self.indentation)
99             self.new_lines = 0
100         self.result.append(x)
102     def newline(self, node=None, extra=0):  argument
103         self.new_lines = max(self.new_lines, 1 + extra)
104         if node is not None and self.add_line_information:
105             self.write('# line: %s' % node.lineno)
106             self.new_lines = 1
108     def body(self, statements):  argument
109         self.new_line = True
110         self.indentation += 1
112             self.visit(stmt)
113         self.indentation -= 1
115     def body_or_else(self, node):  argument
116         self.body(node.body)
118             self.newline()
119             self.write('else:')
120             self.body(node.orelse)
122     def signature(self, node):  argument
126                 self.write(', ')
133             self.visit(arg)
135                 self.write('=')
136                 self.visit(default)
139             self.write('*' + node.vararg)
142             self.write('**' + node.kwarg)
144     def decorators(self, node):  argument
146             self.newline(decorator)
147             self.write('@')
148             self.visit(decorator)
152     def visit_Assign(self, node):  argument
153         self.newline(node)
156                 self.write(', ')
157             self.visit(target)
158         self.write(' = ')
159         self.visit(node.value)
161     def visit_AugAssign(self, node):  argument
162         self.newline(node)
163         self.visit(node.target)
164         self.write(BINOP_SYMBOLS[type(node.op)] + '=')
165         self.visit(node.value)
167     def visit_ImportFrom(self, node):  argument
168         self.newline(node)
169         self.write('from %s%s import ' % ('.' * node.level, node.module))
172                 self.write(', ')
173             self.write(item)
175     def visit_Import(self, node):  argument
176         self.newline(node)
178             self.write('import ')
179             self.visit(item)
181     def visit_Expr(self, node):  argument
182         self.newline(node)
183         self.generic_visit(node)
185     def visit_FunctionDef(self, node):  argument
186         self.newline(extra=1)
187         self.decorators(node)
188         self.newline(node)
189         self.write('def %s(' % node.name)
190         self.signature(node.args)
191         self.write('):')
192         self.body(node.body)
194     def visit_ClassDef(self, node):  argument
198                 self.write(', ')
201                 self.write('(')
203         self.newline(extra=2)
204         self.decorators(node)
205         self.newline(node)
206         self.write('class %s' % node.name)
209             self.visit(base)
215                 self.write(keyword.arg + '=')
216                 self.visit(keyword.value)
219                 self.write('*')
220                 self.visit(node.starargs)
223                 self.write('**')
224                 self.visit(node.kwargs)
225         self.write(have_args and '):' or ':')
226         self.body(node.body)
228     def visit_If(self, node):  argument
229         self.newline(node)
230         self.write('if ')
231         self.visit(node.test)
232         self.write(':')
233         self.body(node.body)
238                 self.newline()
239                 self.write('elif ')
240                 self.visit(node.test)
241                 self.write(':')
242                 self.body(node.body)
244                 self.newline()
245                 self.write('else:')
246                 self.body(else_)
249     def visit_For(self, node):  argument
250         self.newline(node)
251         self.write('for ')
252         self.visit(node.target)
253         self.write(' in ')
254         self.visit(node.iter)
255         self.write(':')
256         self.body_or_else(node)
258     def visit_While(self, node):  argument
259         self.newline(node)
260         self.write('while ')
261         self.visit(node.test)
262         self.write(':')
263         self.body_or_else(node)
265     def visit_With(self, node):  argument
266         self.newline(node)
267         self.write('with ')
268         self.visit(node.context_expr)
270             self.write(' as ')
271             self.visit(node.optional_vars)
272         self.write(':')
273         self.body(node.body)
275     def visit_Pass(self, node):  argument
276         self.newline(node)
277         self.write('pass')
279     def visit_Print(self, node):  argument
281         self.newline(node)
282         self.write('print ')
285             self.write(' >> ')
286             self.visit(node.dest)
290                 self.write(', ')
291             self.visit(value)
294             self.write(',')
296     def visit_Delete(self, node):  argument
297         self.newline(node)
298         self.write('del ')
301                 self.write(', ')
302             self.visit(target)
304     def visit_TryExcept(self, node):  argument
305         self.newline(node)
306         self.write('try:')
307         self.body(node.body)
309             self.visit(handler)
311     def visit_TryFinally(self, node):  argument
312         self.newline(node)
313         self.write('try:')
314         self.body(node.body)
315         self.newline(node)
316         self.write('finally:')
317         self.body(node.finalbody)
319     def visit_Global(self, node):  argument
320         self.newline(node)
321         self.write('global ' + ', '.join(node.names))
323     def visit_Nonlocal(self, node):  argument
324         self.newline(node)
325         self.write('nonlocal ' + ', '.join(node.names))
327     def visit_Return(self, node):  argument
328         self.newline(node)
329         self.write('return ')
330         self.visit(node.value)
332     def visit_Break(self, node):  argument
333         self.newline(node)
334         self.write('break')
336     def visit_Continue(self, node):  argument
337         self.newline(node)
338         self.write('continue')
340     def visit_Raise(self, node):  argument
342         self.newline(node)
343         self.write('raise')
345             self.write(' ')
346             self.visit(node.exc)
348                 self.write(' from ')
349                 self.visit(node.cause)
351             self.visit(node.type)
353                 self.write(', ')
354                 self.visit(node.inst)
356                 self.write(', ')
357                 self.visit(node.tback)
361     def visit_Attribute(self, node):  argument
362         self.visit(node.value)
363         self.write('.' + node.attr)
365     def visit_Call(self, node):  argument
369                 self.write(', ')
373         self.visit(node.func)
374         self.write('(')
377             self.visit(arg)
380             self.write(keyword.arg + '=')
381             self.visit(keyword.value)
384             self.write('*')
385             self.visit(node.starargs)
388             self.write('**')
389             self.visit(node.kwargs)
390         self.write(')')
392     def visit_Name(self, node):  argument
393         self.write(node.id)
395     def visit_Str(self, node):  argument
396         self.write(repr(node.s))
398     def visit_Bytes(self, node):  argument
399         self.write(repr(node.s))
401     def visit_Num(self, node):  argument
402         self.write(repr(node.n))
404     def visit_Constant(self, node):  argument
408         self.write(repr(node.value))
410     def visit_Tuple(self, node):  argument
411         self.write('(')
415                 self.write(', ')
416             self.visit(item)
417         self.write(idx and ')' or ',)')
420         def visit(self, node):  argument
421             self.write(left)
424                     self.write(', ')
425                 self.visit(item)
426             self.write(right)
433     def visit_Dict(self, node):  argument
434         self.write('{')
437                 self.write(', ')
438             self.visit(key)
439             self.write(': ')
440             self.visit(value)
441         self.write('}')
443     def visit_BinOp(self, node):  argument
444         self.visit(node.left)
445         self.write(' %s ' % BINOP_SYMBOLS[type(node.op)])
446         self.visit(node.right)
448     def visit_BoolOp(self, node):  argument
449         self.write('(')
452                 self.write(' %s ' % BOOLOP_SYMBOLS[type(node.op)])
453             self.visit(value)
454         self.write(')')
456     def visit_Compare(self, node):  argument
457         self.write('(')
458         self.write(node.left)
460             self.write(' %s %%' % CMPOP_SYMBOLS[type(op)])
461             self.visit(right)
462         self.write(')')
464     def visit_UnaryOp(self, node):  argument
465         self.write('(')
467         self.write(op)
469             self.write(' ')
470         self.visit(node.operand)
471         self.write(')')
473     def visit_Subscript(self, node):  argument
474         self.visit(node.value)
475         self.write('[')
476         self.visit(node.slice)
477         self.write(']')
479     def visit_Slice(self, node):  argument
481             self.visit(node.lower)
482         self.write(':')
484             self.visit(node.upper)
486             self.write(':')
488                 self.visit(node.step)
490     def visit_ExtSlice(self, node):  argument
493                 self.write(', ')
494             self.visit(item)
496     def visit_Yield(self, node):  argument
497         self.write('yield ')
498         self.visit(node.value)
500     def visit_Lambda(self, node):  argument
501         self.write('lambda ')
502         self.signature(node.args)
503         self.write(': ')
504         self.visit(node.body)
506     def visit_Ellipsis(self, node):  argument
507         self.write('Ellipsis')
510         def visit(self, node):  argument
511             self.write(left)
512             self.visit(node.elt)
514                 self.visit(comprehension)
515             self.write(right)
523     def visit_DictComp(self, node):  argument
524         self.write('{')
525         self.visit(node.key)
526         self.write(': ')
527         self.visit(node.value)
529             self.visit(comprehension)
530         self.write('}')
532     def visit_IfExp(self, node):  argument
533         self.visit(node.body)
534         self.write(' if ')
535         self.visit(node.test)
536         self.write(' else ')
537         self.visit(node.orelse)
539     def visit_Starred(self, node):  argument
540         self.write('*')
541         self.visit(node.value)
543     def visit_Repr(self, node):  argument
545         self.write('`')
546         self.visit(node.value)
547         self.write('`')
551     def visit_alias(self, node):  argument
552         self.write(node.name)
554             self.write(' as ' + node.asname)
556     def visit_comprehension(self, node):  argument
557         self.write(' for ')
558         self.visit(node.target)
559         self.write(' in ')
560         self.visit(node.iter)
563                 self.write(' if ')
564                 self.visit(if_)
566     def visit_excepthandler(self, node):  argument
567         self.newline(node)
568         self.write('except')
570             self.write(' ')
571             self.visit(node.type)
573                 self.write(' as ')
574                 self.visit(node.name)
575         self.write(':')
576         self.body(node.body)