Add a Char class - Githubissues

swaroopch / edn_format

EDN reader and writer implementation in Python, using PLY (lex, yacc)

https://swaroopch.com/2012/12/24/edn-format-python/

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Add a Char class #77

Closed bfontaine closed 3 years ago

bfontaine commented 3 years ago

This PR adds a Char class, in order to fix the last item of #31.

When reading EDN, chars are parsed as Char instances
When dumping EDN, Char instances are dumped as EDN chars

Char inherits from str, so this is backward compatible.

# both expressions are true
Char("c") == "c"
isinstance(Char("c"), str)

In fact, unless you explicitely test it with isinstance(c, Char), a Char is indistinguishable from a one-char str.