add verbosity levels arguments

.gitignore

@@ -10,3 +10,8 @@ __pycache__/
 
 # Generated by build
 /dist
+
+# IDEs configs/caches
+.vscode
+.idea
+.run

pyproject.toml

@@ -40,6 +40,7 @@ dev = [
     "pytest",
     "pytest-cov",
     "twine",
+    "ruff",
 ]
 
 [project.scripts]

src/flynt/api.py

@@ -5,7 +5,6 @@
 import os
 import sys
 import time
-import traceback
 from difflib import unified_diff
 from typing import Collection, List, Optional, Tuple
 
@@ -100,10 +99,10 @@ def fstringify_code(
                     new_code,
                     state=state,
                 )
-            except Exception:
-                msg = traceback.format_exc()
-                log.error("Transforming concatenation of literal strings failed")
-                log.error(msg)
+            except Exception as exc:
+                log.error(
+                    "Transforming concatenation of literal strings failed", exc_info=exc
+                )
             else:
                 changes += concat_changes
                 state.concat_changes += concat_changes
@@ -113,10 +112,10 @@ def fstringify_code(
                     new_code,
                     state=state,
                 )
-            except Exception:
-                msg = traceback.format_exc()
-                log.error("Transforming concatenation of literal strings failed")
-                log.error(msg)
+            except Exception as exc:
+                log.error(
+                    "Transforming concatenation of literal strings failed", exc_info=exc
+                )
             else:
                 changes += join_changes
                 state.join_changes += join_changes

src/flynt/cli.py

@@ -29,9 +29,9 @@ def run_flynt_cli(arglist: Optional[List[str]] = None) -> int:
     verbosity_group.add_argument(
         "-v",
         "--verbose",
-        action="store_true",
+        action="count",
         help="run with verbose output",
-        default=False,
+        default=0,
     )
     verbosity_group.add_argument(
         "-q",
@@ -194,8 +194,10 @@ def run_flynt_cli(arglist: Optional[List[str]] = None) -> int:
     )
 
     state = state_from_args(args)
-    if args.verbose:
-        logging.getLogger("flynt").setLevel(logging.DEBUG)
+    if args.verbose > 0:
+        logging.getLogger("flynt").setLevel(
+            logging.DEBUG if args.verbose > 1 else logging.INFO
+        )
 
     if args.string:
         content = " ".join(args.src)

src/flynt/transform/transform.py

@@ -1,7 +1,6 @@
 import ast
 import copy
 import logging
-import traceback
 from typing import Tuple
 
 from flynt.exceptions import ConversionRefused
@@ -38,9 +37,9 @@ def transform_chunk(
         log.warning("Not converting code due to: %s", cr)
         state.invalid_conversions += 1
         return None, False  # type:ignore # ideally should return one optional str
-    except Exception:
-        msg = traceback.format_exc()
-        log.exception("Exception during conversion of code: %s", msg)
+    except Exception as exc:
+        level = logging.DEBUG if isinstance(exc, AssertionError) else logging.ERROR
+        log.log(level, "Exception during conversion of code", exc_info=exc)
         state.invalid_conversions += 1
         return None, False  # type:ignore # ideally should return one optional str
     else: