Python doctest错误。OSX

Question

我有MBP13'R运行最新的OSX。

因为某种原因我不能参加博士考试..。

Python代码：

def area_tri(base, height):
    """
    >>>area_tri(10, 10)
    50
    """
    return base / 2 * height

import doctest

doctest.testmod()

错误消息：

  Traceback (most recent call last):
  File "/Users/name/Documents/doctest.py", line 8, in <module>
    import doctest
  File "/Users/name/Documents/doctest.py", line 9, in <module>
    doctest.testmod()
  AttributeError: 'module' object has no attribute 'testmod'

我刚开始在我的Mac电脑上编程我无法修复它..。Python版本为3.3.4

Answer 1

您的文件命名混淆了解释器。您已经将文件命名为"/Users/name/Documents/doctest.py"，它与doctest模块具有相同的名称。

更改名称，然后再试一次(确保还删除了旧的doctest.pyc )。

演示：

您的代码如预期的那样中断：

msvalkon@Lunkwill:/tmp$ python doctest.py 
Traceback (most recent call last):
  File "doctest.py", line 8, in <module>
    import doctest
  File "/tmp/doctest.py", line 9, in <module>
    doctest.testmod()
AttributeError: 'module' object has no attribute 'testmod'

重命名和删除.pyc之后

msvalkon@Lunkwill:/tmp$ mv doctest.py dtest.py 
msvalkon@Lunkwill:/tmp$ rm doctest.pyc
msvalkon@Lunkwill:/tmp$ python dtest.py
Traceback (most recent call last):
  File "dtest.py", line 9, in <module>
    doctest.testmod()
  File "/usr/lib/python2.7/doctest.py", line 1885, in testmod
    for test in finder.find(m, name, globs=globs, extraglobs=extraglobs):
  File "/usr/lib/python2.7/doctest.py", line 900, in find
    self._find(tests, obj, name, module, source_lines, globs, {})
  File "/usr/lib/python2.7/doctest.py", line 954, in _find
    globs, seen)
  File "/usr/lib/python2.7/doctest.py", line 942, in _find
    test = self._get_test(obj, name, module, globs, source_lines)
  File "/usr/lib/python2.7/doctest.py", line 1026, in _get_test
    filename, lineno)
  File "/usr/lib/python2.7/doctest.py", line 645, in get_doctest
    return DocTest(self.get_examples(string, name), globs,
  File "/usr/lib/python2.7/doctest.py", line 659, in get_examples
    return [x for x in self.parse(string, name)
  File "/usr/lib/python2.7/doctest.py", line 621, in parse
    self._parse_example(m, name, lineno)
  File "/usr/lib/python2.7/doctest.py", line 679, in _parse_example
    self._check_prompt_blank(source_lines, indent, name, lineno)
  File "/usr/lib/python2.7/doctest.py", line 766, in _check_prompt_blank
    line[indent:indent+3], line))
ValueError: line 2 of the docstring for __main__.area_tri lacks blank after >>>: '>>>area_tri(10, 10)'

注意，您没有遵循doctest规则，但这是另一个问题。