python dmidecode模块中的方法/属性是什么？

Question

I need to know about my system's hardware as described in BIOS and use it in a python program. So I came to know about this python module dmidecode and I installed it in my machine. But I cannot understand the methods in it. For instance :

>>> dir(dmidecode)
['TYPE', '__builtins__', '__doc__', '__file__', '__name__', '__package__', '__version__', '_get_output', '_parse_handle_section', '_show', 'parse_dmi', 'profile']

Now, when I am trying to access the individual methods, it is giving the following errors:

>>> dmidecode._parse_handle_section()

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: _parse_handle_section() takes exactly 1 argument (0 given)

>>> dmidecode._show()

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: _show() takes exactly 1 argument (0 given)

>>> dmidecode.parse_dmi()

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: parse_dmi() takes exactly 1 argument (0 given)

Now, the real problem is that, I cannot find any good tutorial to study and understand the usage of these methods.

So any help or links will be greatly appreciated.

Answer 1

Here are some alternatives:

• You can use pydoc <module> to access the module's documentation from the system shell, and pydoc <module>.<method> to access a specific method docstring.

• You can use help(<module>) to access the same documentation from the Python shell, and help(<module>.<method>) for a method docstring.

• You can use %pinfo <module> and %pinfo2 <module> to access the docstrings and read the source code from the IPython shell, which is an alternative to the normal shell you are using. This also works for methods.

If there is no documentation or docstrings whatsoever, then your only option is to read the code with IPython and %pinfo2 .

And a word of advice: in Python, a method which has a _ prepended usually is meant to be private, while methods starting and ending with __ are called "magic" and are "even more private", so to speak.

You can always access everything, but from the looks of the dir call, you should concentrate on the parse_dmi and profile functions.