snowch$ ipython3
Python 3.6.2 |Anaconda, Inc.| (default, Sep 21 2017, 18:29:43)
Type 'copyright', 'credits' or 'license' for more information
IPython 6.1.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: from my_package import MyClass

In [2]: cf = MyClass(<TAB>
                       abs()                                 api_key=
                       all()                                 api_key_filename=
                       any()                                 ArithmeticError                       >
                       api_endpoint=                         ascii()
                       ...

In [3]: cf.auth(<TAB>
                 abs()                                 ascii()
                       ...

In [4]: %config IPCompleter
IPCompleter options
-----------------
IPCompleter.backslash_combining_completions=<Bool>
    Current: True
IPCompleter.debug=<Bool>
    Current: False
IPCompleter.greedy=<Bool>
    Current: False
IPCompleter.jedi_compute_type_timeout=<Int>
    Current: 400
IPCompleter.limit_to__all__=<Bool>
    Current: False
IPCompleter.merge_completions=<Bool>
    Current: True
IPCompleter.omit__names=<Enum>
    Current: 2
IPCompleter.use_jedi=<Bool>
    Current: True