How do you get list of methods in a python class?

Question

I want to iterate through the methods in a class. How do I get a list of it's methods?

Also see:

• How can I list the methods in a Python 2.5 module?
• Looping over a Python / IronPython Object Methods
• Finding the methods an object has
• How do I look inside a Python object?
• How Do I Perform Introspection on an Object in Python 2.x?
• How to get a complete list of object’s methods and attributes?
• Finding out which functions are available from a class instance in python?

Answer 1

An example (listing the methods of the optparse.OptionParser class):

>>> from optparse import OptionParser
>>> import inspect
>>> inspect.getmembers(OptionParser, predicate=inspect.ismethod)
[([('__init__', <unbound method OptionParser.__init__>),
...
 ('add_option', <unbound method OptionParser.add_option>),
 ('add_option_group', <unbound method OptionParser.add_option_group>),
 ('add_options', <unbound method OptionParser.add_options>),
 ('check_values', <unbound method OptionParser.check_values>),
 ('destroy', <unbound method OptionParser.destroy>),
 ('disable_interspersed_args',
  <unbound method OptionParser.disable_interspersed_args>),
 ('enable_interspersed_args',
  <unbound method OptionParser.enable_interspersed_args>),
 ('error', <unbound method OptionParser.error>),
 ('exit', <unbound method OptionParser.exit>),
 ('expand_prog_name', <unbound method OptionParser.expand_prog_name>),
 ...
 ]

Notice that getmembers returns a list of 2-tuples. The first item is the name of the member, the second item is the value.

You can also pass an instance to getmembers:

>>> parser = OptionParser()
>>> inspect.getmembers(parser, predicate=inspect.ismethod)
...

Answer 2

Try the property __dict__.

Answer 3

There is the dir(theobject) method to list all the fields and methods of your object (as a tuple) and the inspect module (as codeape write) to list the fields and methods with their doc (in """).

Because everythingthing (even fields) might be called in python, I'm not sure there is a built-in function to list only methods. You might want to try if the object you get through dir is callable or not.