Rename map

[xdssio]

Rename multiple columns

Simply iterate and rename columns if possible.
returns the new columns which were added.

I have created it on another function to allow backward compatibility.
We can also rename this function to rename_columns for example, or something else, or allow name param to be a dict in rename().

Example:

df.renames({'x': 'x1', 'y': 'y1'})

What do you think?

[JovanVeljanoski]

Is this the same idea as #1135?

I think we got stuck there on the API name, and whether the current rename should be refactored to support this but not break existing functionality (since it is used heavily internally), or exist as a separate method.

My preference would be for a single rename method that can handle this as well (if that is possible). So less methods for users to need to remember.

What do you think?

[xdssio]

I have

Is this the same idea as #1135?

I think we got stuck there on the API name, and whether the current rename should be refactored to support this but not break existing functionality (since it is used heavily internally), or exist as a separate method.

My preference would be for a single rename method that can handle this as well (if that is possible). So less methods for users to need to remember.

What do you think?

I initially had the same idea. I can check if name is a dict, and then apply it.
@maartenbreddels What do you think?

[maartenbreddels]

Yes, let's put it in a single method.