#146: Use f-string

• Fix local blockchain code
• Delete empty api.elasticsearch module
• Use f-string as much as possible:
  • Replace .format(), %, str + str formats to f-string format
  • Done as much as possible without putting too horrible operations in the f-string
  • Kept % format into the logging for now, since it causes errors with pylint and mypy

Close #146 (closed).

changed milestone to %1.1.0

added Py ≥ 3.5 enhancement labels

requested review from @vtexier

assigned to @moul

changed the description

approved this merge request

added 13 commits

• 81112514...c1157856 - 7 commits from branch main
• 6a58baa7 - [mod] Delete empty api.elasticsearch module
• a3275bbb - [mod] Fix local blockchain code
• 35e91b65 - [mod] #146 (closed): api/constants: Use f-string
• 565d2dcc - [mod] #146 (closed): documents/grammars: Use f-string
• 476f5e71 - [mod] #146 (closed): key: Use f-string
• 105e9a32 - [mod] #146 (closed): examples: Use f-string

Compare with previous version

enabled an automatic merge when the pipeline for 105e9a32 succeeds

merged