FEAT: Add flake8 (#267)

* init flake8

* exclude nostr client, and add ds_store to gitignore

* fix flake8 F811 issue, redefinition of unused variables

* add flake8 to workflow

* F401 unused imports

* F541 f-string is missing placeholders

* E501 line too long > 150 characters

* E722 no bare except

* E402 module level import not at top of file

* F405 no star imports

* E712 comparison to False should be 'if cond is False:'

* F841 local variable is assigned to but never used

* E266 too many leading '#' for block comment

* E265, E261

* E713 test for membership should be 'not in'

* E711, E741

E741 ambiguous variable name 'l'
E711 comparison to None should be 'if cond is None:'

* flake config

* isort

* refactor makefile flake8 usage

* reflaking the rebase

* black

* fix tests?

* black

* fix line lenght it test_cli

* sort out makefile

* fix strings

* reintroduce black-check

* reflake and mypy

* isort

* Update cashu/wallet/wallet.py

Co-authored-by: Angus Pearson <angus@toaster.cc>

* Update cashu/mint/ledger.py

Co-authored-by: Angus Pearson <angus@toaster.cc>

---------

Co-authored-by: Angus Pearson <angus@toaster.cc>

tests/test_cli.py

@@ -3,12 +3,9 @@ import asyncio
 import pytest
 from click.testing import CliRunner
 
-from cashu.core.migrations import migrate_databases
 from cashu.core.settings import settings
-from cashu.wallet import migrations
 from cashu.wallet.cli.cli import cli
 from cashu.wallet.wallet import Wallet
-from tests.conftest import SERVER_ENDPOINT, mint
 
 
 @pytest.fixture(autouse=True, scope="session")
@@ -165,7 +162,12 @@ def test_send_without_split_but_wrong_amount(mint, cli_prefix):
 @pytest.mark.asyncio
 def test_receive_tokenv3(mint, cli_prefix):
     runner = CliRunner()
-    token = "cashuAeyJ0b2tlbiI6IFt7InByb29mcyI6IFt7ImlkIjogIjFjQ05JQVoyWC93MSIsICJhbW91bnQiOiAyLCAic2VjcmV0IjogIld6TEF2VW53SDlRaFYwQU1rMy1oYWciLCAiQyI6ICIwMmZlMzUxYjAyN2FlMGY1ZDkyN2U2ZjFjMTljMjNjNTc3NzRhZTI2M2UyOGExN2E2MTUxNjY1ZjU3NWNhNjMyNWMifSwgeyJpZCI6ICIxY0NOSUFaMlgvdzEiLCAiYW1vdW50IjogOCwgInNlY3JldCI6ICJDamFTeTcyR2dVOGwzMGV6bE5zZnVBIiwgIkMiOiAiMDNjMzM0OTJlM2ZlNjI4NzFhMWEzMDhiNWUyYjVhZjBkNWI1Mjk5YzI0YmVkNDI2ZjQ1YzZmNDg5N2QzZjc4NGQ5In1dLCAibWludCI6ICJodHRwOi8vbG9jYWxob3N0OjMzMzcifV19"
+    token = (
+        "cashuAeyJ0b2tlbiI6IFt7InByb29mcyI6IFt7ImlkIjogIjFjQ05JQVoyWC93MSIsICJhbW91bnQiOiAyLCAic2VjcmV0IjogIld6TEF2VW53SDlRaFYwQU1rMy1oYWciLC"
+        "AiQyI6ICIwMmZlMzUxYjAyN2FlMGY1ZDkyN2U2ZjFjMTljMjNjNTc3NzRhZTI2M2UyOGExN2E2MTUxNjY1ZjU3NWNhNjMyNWMifSwgeyJpZCI6ICIxY0NOSUFaMlgvdzEiLCAiYW"
+        "1vdW50IjogOCwgInNlY3JldCI6ICJDamFTeTcyR2dVOGwzMGV6bE5zZnVBIiwgIkMiOiAiMDNjMzM0OTJlM2ZlNjI4NzFhMWEzMDhiNWUyYjVhZjBkNWI1Mjk5YzI0YmVkNDI2Zj"
+        "Q1YzZmNDg5N2QzZjc4NGQ5In1dLCAibWludCI6ICJodHRwOi8vbG9jYWxob3N0OjMzMzcifV19"
+    )
     result = runner.invoke(
         cli,
         [
@@ -184,7 +186,12 @@ def test_receive_tokenv3_no_mint(mint, cli_prefix):
     # this test works only if the previous test succeeds because we simulate the case where the mint URL is not in the token
     # therefore, we need to know the mint keyset already and have the mint URL in the db
     runner = CliRunner()
-    token = "cashuAeyJ0b2tlbiI6IFt7InByb29mcyI6IFt7ImlkIjogIjFjQ05JQVoyWC93MSIsICJhbW91bnQiOiAyLCAic2VjcmV0IjogIi1oM0ZXMFFoX1FYLW9ac1V2c0RuNlEiLCAiQyI6ICIwMzY5Mzc4MzdlYjg5ZWI4NjMyNWYwOWUyOTIxMWQxYTI4OTRlMzQ2YmM1YzQwZTZhMThlNTk5ZmVjNjEwOGRmMGIifSwgeyJpZCI6ICIxY0NOSUFaMlgvdzEiLCAiYW1vdW50IjogOCwgInNlY3JldCI6ICI3d0VhNUgzZGhSRGRNZl94c1k3c3JnIiwgIkMiOiAiMDJiZmZkM2NlZDkxNjUyMzcxMDg2NjQxMzJiMjgxYjBhZjY1ZTNlZWVkNTY3MmFkZjM0Y2VhNzE5ODhhZWM1NWI1In1dfV19"
+    token = (
+        "cashuAeyJ0b2tlbiI6IFt7InByb29mcyI6IFt7ImlkIjogIjFjQ05JQVoyWC93MSIsICJhbW91bnQiOiAyLCAic2VjcmV0IjogIi1oM0ZXMFFoX1FYLW9ac1V2c0RuNlEiLC"
+        "AiQyI6ICIwMzY5Mzc4MzdlYjg5ZWI4NjMyNWYwOWUyOTIxMWQxYTI4OTRlMzQ2YmM1YzQwZTZhMThlNTk5ZmVjNjEwOGRmMGIifSwgeyJpZCI6ICIxY0NOSUFaMlgvdzEiLCAiYW"
+        "1vdW50IjogOCwgInNlY3JldCI6ICI3d0VhNUgzZGhSRGRNZl94c1k3c3JnIiwgIkMiOiAiMDJiZmZkM2NlZDkxNjUyMzcxMDg2NjQxMzJiMjgxYjBhZjY1ZTNlZWVkNTY3MmFkZj"
+        "M0Y2VhNzE5ODhhZWM1NWI1In1dfV19"
+    )
     result = runner.invoke(
         cli,
         [
@@ -201,7 +208,12 @@ def test_receive_tokenv3_no_mint(mint, cli_prefix):
 @pytest.mark.asyncio
 def test_receive_tokenv2(mint, cli_prefix):
     runner = CliRunner()
-    token = "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"
+    token = (
+        "eyJwcm9vZnMiOiBbeyJpZCI6ICIxY0NOSUFaMlgvdzEiLCAiYW1vdW50IjogMiwgInNlY3JldCI6ICJhUmREbzlFdW9yZUVfOW90enRNVVpnIiwgIkMiOiAiMDNhMzY5ZmUy"
+        "N2IxYmVmOTg4MzA3NDQyN2RjMzc1NmU0NThlMmMwYjQ1NWMwYmVmZGM4ZjVmNTA3YmM5MGQxNmU3In0sIHsiaWQiOiAiMWNDTklBWjJYL3cxIiwgImFtb3VudCI6IDgsICJzZWNy"
+        "ZXQiOiAiTEZQbFp6Ui1MWHFfYXFDMGhUeDQyZyIsICJDIjogIjAzNGNiYzQxYWY0ODIxMGFmNjVmYjVjOWIzOTNkMjhmMmQ5ZDZhOWE5MzI2YmI3MzQ2YzVkZmRmMTU5MDk1MzI2"
+        "YyJ9XSwgIm1pbnRzIjogW3sidXJsIjogImh0dHA6Ly9sb2NhbGhvc3Q6MzMzNyIsICJpZHMiOiBbIjFjQ05JQVoyWC93MSJdfV19"
+    )
     result = runner.invoke(
         cli,
         [*cli_prefix, "receive", token],
@@ -214,7 +226,11 @@ def test_receive_tokenv2(mint, cli_prefix):
 @pytest.mark.asyncio
 def test_receive_tokenv1(mint, cli_prefix):
     runner = CliRunner()
-    token = "W3siaWQiOiAiMWNDTklBWjJYL3cxIiwgImFtb3VudCI6IDIsICJzZWNyZXQiOiAiRnVsc2dzMktQV1FMcUlLX200SzgwQSIsICJDIjogIjAzNTc4OThlYzlhMjIxN2VhYWIxZDc3YmM1Mzc2OTUwMjJlMjU2YTljMmMwNjc0ZDJlM2FiM2JiNGI0ZDMzMWZiMSJ9LCB7ImlkIjogIjFjQ05JQVoyWC93MSIsICJhbW91bnQiOiA4LCAic2VjcmV0IjogInJlRDBDazVNS2xBTUQ0dWk2OEtfbEEiLCAiQyI6ICIwMjNkODNkNDE0MDU0NWQ1NTg4NjUyMzU5YjJhMjFhODljODY1ZGIzMzAyZTkzMTZkYTM5NjA0YTA2ZDYwYWQzOGYifV0="
+    token = (
+        "W3siaWQiOiAiMWNDTklBWjJYL3cxIiwgImFtb3VudCI6IDIsICJzZWNyZXQiOiAiRnVsc2dzMktQV1FMcUlLX200SzgwQSIsICJDIjogIjAzNTc4OThlYzlhMjIxN2VhYWIx"
+        "ZDc3YmM1Mzc2OTUwMjJlMjU2YTljMmMwNjc0ZDJlM2FiM2JiNGI0ZDMzMWZiMSJ9LCB7ImlkIjogIjFjQ05JQVoyWC93MSIsICJhbW91bnQiOiA4LCAic2VjcmV0IjogInJlRDBD"
+        "azVNS2xBTUQ0dWk2OEtfbEEiLCAiQyI6ICIwMjNkODNkNDE0MDU0NWQ1NTg4NjUyMzU5YjJhMjFhODljODY1ZGIzMzAyZTkzMTZkYTM5NjA0YTA2ZDYwYWQzOGYifV0="
+    )
     result = runner.invoke(
         cli,
         [*cli_prefix, "receive", token],