Fix unwanted escaping of regex string-constants (SyntaxWarning: invalid escape sequence)

[umgfoin]

Regex-constants like "\_" should not be escaped - assign them as raw-string literals.
"\_" -> r"\_"
Fixes commit a01501e causing
endpoints/__init__.py:388: SyntaxWarning: invalid escape sequence '\_'
and related.

[crpb]

I guess this fixes this so no need for another issue \ö/.

root@grom-deb:~# apt dist-upgrade
Upgrading:
  grommunio-admin-api

Summary:
  Upgrading: 1, Installing: 0, Removing: 0, Not Upgrading: 0
  Download size: 209 kB
  Space needed: 0 B / 11.7 GB available

Continue? [Y/n]
Get:1 https://download.grommunio.com/community/Debian_13 Debian_13/main amd64 grommunio-admin-api all 1.19.6.m37abcff-1+1.1 [209 kB]
Fetched 209 kB in 0s (931 kB/s)
[master a488c06] saving uncommitted changes in /etc prior to apt run
 4 files changed, 1 insertion(+), 6 deletions(-)
 delete mode 120000 systemd/system/multi-user.target.wants/gromox-istore.service
Reading changelogs... Done
(Reading database ... 76687 files and directories currently installed.)
Preparing to unpack .../grommunio-admin-api_1.19.6.m37abcff-1+1.1_all.deb ...
Unpacking grommunio-admin-api (1.19.6.m37abcff-1+1.1) over (1.18.28.m37abcff-1+18.1) ...
Setting up grommunio-admin-api (1.19.6.m37abcff-1+1.1) ...
/usr/share/grommunio-admin-api/cli/common.py:24: SyntaxWarning: invalid escape sequence '\_'
  Users.username.ilike(userSpec.replace("_", "\_")+("%" if autocompleting else "")), *filters)
/usr/share/grommunio-admin-api/endpoints/__init__.py:388: SyntaxWarning: invalid escape sequence '\_'
  matchexpr = tuple("%"+substr.replace("_", "\_")+"%" for substr in expr.split())
/usr/share/grommunio-admin-api/tools/DataModel.py:580: SyntaxWarning: invalid escape sequence '\_'
  matchexpr = tuple("%"+substr.replace("_", "\_")+"%" for substr in expr.split())
Processing triggers for man-db (2.13.1-1) ...
Scanning processes...
Scanning linux images...

Running kernel seems to be up-to-date.

No services need to be restarted.

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.

[StefanAkie]

lgtm