[python #HSE-220221]: read_colortable

Hello, and thanks for the follow-up!

A "file-like object" refers to anything in Python that you can interact with 
that "looks like" a file. For example my actual file on disk, or my in-memory 
thing that looks like a file, or my object visible remotely on some server 
somewhere; I can interact with these using methods like `.read()` and 
`.write()`. In this case, that does *not* include strings/Paths (though many 
packages out there do take strings, paths, or file-like objects for a variety 
of functions.)

So in this case, if your colortable follows the format Ryan specified before, 
you could read it in as follows:

  with open('mycolortable.tbl') as fobj:
      ctable = metpy.plots.read_colortable(fobj)

where you create a file-like object by `open()`ing our text file. I hope this 
helps! Don't hesitate to follow-up if you have any other questions.


All the best,

Drew


> So what exactly is a 'file-like object'?  Is it a string with a path to a
> filename, like './mycolortable.tbl' ?
> Let's say I've got a color table saved in a text file called
> 'mycolortable.tbl'.  What would the syntax look like to read this color
> table?
> 


Ticket Details
===================
Ticket ID: HSE-220221
Department: Support Python
Priority: Low
Status: Closed
===================
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