Question

import doctest

def create_grid(size):
   grid = []
   for i in range(size):
       row = ['0']*size
       grid.append(row)
   """
   >>> create_grid(4)
   [['0', '0', '0', '0'], ['0', '0', '0', '0'],
    ['0', '0', '0', '0'], ['0', '0', '0', '0']]
   """
   return grid

if __name__ == '__main__':
    doctest.testmod()

使用python Test_av_doctest.py -v运行上述内容会显示以下消息：

2 items had no tests:
    __main__
    __main__.create_grid
0 tests in 2 items.
0 passed and 0 failed.
Test passed.

知道这个错误发生的原因吗？

Answer 1

问题是您的doctest格式化字符串不是文档字符串。

Which docstrings are examined?

模块docstring，搜索所有函数，类和方法文档字符串。

如果将测试字符串移到函数定义下面，它将成为函数docstring，因此将被doctest定位：

def create_grid(size):
   """
   >>> create_grid(4)
   [['0', '0', '0', '0'], ['0', '0', '0', '0'],
    ['0', '0', '0', '0'], ['0', '0', '0', '0']]
   """
   grid = []
   for i in range(size):
       row = ['0']*size
       grid.append(row)

   return grid

if __name__ == '__main__':
    doctest.testmod()

$ python Test_av_doctest.py -v
...
1 passed and 0 failed.
Test passed.

Doctest没有运行测试

1 个答案: