How to search some word in python help() built-in function result?

Question

Sometimes I need search some thing inside some python library docs that I have installed and I always use help() built-in function but I would like to know if there are some way to search inside this content or even better, without need to open a python terminal. I really would like to know some clean way to do this (linux based), avoiding pipes or something like this that I already know. There are some library or external useful to share with us?

Answer 1

In shell:

pydoc modulename | grep the-word

Example

$ pydoc os | grep chmod
chmod(...)
    chmod(path, mode)
fchmod(...)
    fchmod(fd, mode)