파이썬에서 함수에 대한 정보를 찾는 방법은 무엇입니까?

Question

나는 R에서 "function_name"을 입력 할 수 있음을 알고 있습니다. 어떻게 파이썬에서 이것을합니까? 특히 pyplot 라이브러리에서 set_position에 대한 정보를 찾으려고합니다.

Answer 1

help(function) 

트릭을해야합니다.

데모 : ipython에서

def func(): 
    """ 
    I am a function who doesn't do anything, 
    I just sit in your namespace and crowd it up. 
    If you call me expecting anything 
    I'll just return to you the singleton None 
    """ 
    pass 

help(func) 

Answer 2

의 supereasy - 단지 문제의 함수 (소스 코드와 함께 확장 된 정보를 원하시면 또는 ??) ?를 추가합니다. matplotlib에서 대화식으로 작업 할 때

난 항상 그것을 사용 :

In [2]: from matplotlib.axes import Axes 

In [3]: Axes.set_position?? 
Type:  instancemethod 
String Form:<unbound method Axes.set_position> 
File:  /home/tzelleke/.local/modules/active_python_2.7/lib/python2.7/site-packages/matplotlib/axes.py 
Definition: Axes.set_position(self, pos, which='both') 
Source: 
    def set_position(self, pos, which='both'): 
     """ 
     Set the axes position with:: 

      pos = [left, bottom, width, height] 

     in relative 0,1 coords, or *pos* can be a 
     :class:`~matplotlib.transforms.Bbox` 

     There are two position variables: one which is ultimately 
     used, but which may be modified by :meth:`apply_aspect`, and a 
     second which is the starting point for :meth:`apply_aspect`. 


     Optional keyword arguments: 
      *which* 

      ========== ==================== 
      value  description 
      ========== ==================== 
      'active'  to change the first 
      'original' to change the second 
      'both'  to change both 
      ========== ==================== 

     """ 
     if not isinstance(pos, mtransforms.BboxBase): 
      pos = mtransforms.Bbox.from_bounds(*pos) 
     if which in ('both', 'active'): 
      self._position.set(pos) 
     if which in ('both', 'original'): 
      self._originalPosition.set(pos) 

In [4]: 

Answer 3

, ipython에서 실행 해보십시오 경우에 입력 할 수 있습니다

In [1]: from matplotlib import pyplot as pl 

In [2]: pl.set_position? 
Object `pl.set_position` not found. 

를 여기에서 찾아 google을 사용해야합니다 그 set_position은 Axes 클래스의 메소드입니다 :

In [3]: pl.Axes.set_position? 
Type:  instancemethod 
String Form:<unbound method Axes.set_position> 
File:  /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/axes.py 
Definition: pl.Axes.set_position(self, pos, which='both') 
Docstring: 
Set the axes position with:: 

    pos = [left, bottom, width, height] 

in relative 0,1 coords, or *pos* can be a 
:class:`~matplotlib.transforms.Bbox` 

There are two position variables: one which is ultimately 
used, but which may be modified by :meth:`apply_aspect`, and a 
second which is the starting point for :meth:`apply_aspect`. 


Optional keyword arguments: 
    *which* 

    ========== ==================== 
    value  description 
    ========== ==================== 
    'active'  to change the first 
    'original' to change the second 
    'both'  to change both 
    ========== ====================