Add one-liner to export addresses in Electrum

[alexbowe]

Before:

• The advanced address checking step suggested exporting 10,000 addresses for printing, but it isn't clear how to do this.

After:

• A one-liner Python command has been added for execution in the Electrum console that writes 10,000 receive addresses to a temporary text file.
• pyspellcheck yaml config had an indentation issue which was fixed in order to run the spellcheck test.
• Python and Electrum keywords that were flagged as invalid were added to the exceptions list for pyspellcheck.
• The exceptions list was sorted for ease of lookup.

[mflaxman]

Thanks!

I like giving this info, but it should probably link to 3rd party site where they go over in detail how to do this. For example, these instructions only works on Tails but for verifying a receive address you could be using a hot machine

[mflaxman]

Closing due to inactivity. Happy to link to somewhere that explains how to do this in depth.

buidl does this and is much easier to install/use via airgap, but specter-desktop. Sparrow, Caravan and others offer similar functionality.