Postgres' functions for escaping and unescaping configuration property values.

/** Strip the quotes surrounding the given string, and collapse any embedded* '' sequences and backslash escapes.*/char*DeescapeQuotedString(constchar*s)

https://github.com/postgres/postgres/blob/e3fa2b037c6f0f435838e99200050dc54c306085/src/backend/utils/misc/guc-file.l#L653

/* * Escape (by doubling) any single quotes or backslashes in given string **/char*escape_single_quotes_ascii(constchar*src)

https://github.com/postgres/postgres/blob/1acf10549e64c6a52ced570d712fcba1a2f5d1ec/src/port/quotes.c#L33

Ошибки flake8
./testgres/node.py:1637:20: E721 do not compare types, for exact checks useis /is not, for instance checks useisinstance()
./testgres/node.py:1702:16: E721 do not compare types, for exact checks useis /is not, for instance checks useisinstance()

flake8 error:

./build/lib/testgres/node.py:1637:20: E721 do not compare types, for exact checks useis /is not, for instance checks useisinstance()

It is a really interesting problem.

Flake does not like:

but doesn't mind it:

For me - it need to configure flake and disable E721.

https://stackoverflow.com/questions/52395064/e721-do-not-compare-types-use-isinstance-error

you should just ignore the linter because it's not suggesting anything useful to you.

In my experience Python linters are blunt tools and implemented fairly naively.

What I do not use isinstance:

Never use isinstance() to validate types, one example is that True and False are considered instances of int

https://www.flake8rules.com/rules/E721.html

A object should be be compared to a type by using isinstance. This is because isinstance can handle subclasses as well.

They are really thinking that know what I want :)