introspection – Finding what methods a Python object has

introspection – Finding what methods a Python object has

For many objects, you can use this code, replacing object with the object youre interested in:

object_methods = [method_name for method_name in dir(object)
                  if callable(getattr(object, method_name))]

I discovered it at (now archived). Hopefully, that should provide some further detail!

If you get an AttributeError, you can use this instead:

getattr( is intolerant of pandas style python3.6 abstract virtual sub-classes. This code does the same as above and ignores exceptions.

import pandas as pd
df = pd.DataFrame([[10, 20, 30], [100, 200, 300]],
                  columns=[foo, bar, baz])
def get_methods(object, spacing=20):
  methodList = []
  for method_name in dir(object):
        if callable(getattr(object, method_name)):
    except Exception:
  processFunc = (lambda s:  .join(s.split())) or (lambda s: s)
  for method in methodList:
        print(str(method.ljust(spacing)) +   +
              processFunc(str(getattr(object, method).__doc__)[0:90]))
    except Exception:
        print(method.ljust(spacing) +   +  getattr() failed)


You can use the built in dir() function to get a list of all the attributes a module has. Try this at the command line to see how it works.

>>> import moduleName
>>> dir(moduleName)

Also, you can use the hasattr(module_name, attr_name) function to find out if a module has a specific attribute.

See the Guide to Python introspection for more information.

introspection – Finding what methods a Python object has

The simplest method is to use dir(objectname). It will display all the methods available for that object. Cool trick.

Leave a Reply

Your email address will not be published. Required fields are marked *