CI: Update .flake8 configuration and fix flake8 errors in lib/init/grass.py

.flake8

@@ -20,7 +20,6 @@ per-file-ignores =
  # F841 local variable assigned to but never used
  # E741 ambiguous variable name 'l'
  __init__.py: F401, F403
- lib/init/grass.py: E722, F821, F841
  man/build_check_rest.py: F403, F405
  man/build_full_index_rest.py: F403, F405
  man/parser_standard_options.py: F403, F405

lib/init/grass.py

@@ -484,7 +484,7 @@ def create_gisrc(tmpdir, gisrcrc):
  if "UNKNOWN" in s:
  try_remove(gisrcrc)
  s = None
- except:
+ except Exception:
  s = None
 
  # Copy the global grassrc file to the session grassrc file
@@ -1162,7 +1162,7 @@ def set_language(grass_config_dir):
  encoding = "UTF-8"
  normalized = locale.normalize("%s.%s" % (language, encoding))
  locale.setlocale(locale.LC_ALL, normalized)
- except locale.Error as e:
+ except locale.Error:
  if language == "en":
  # A workaround for Python Issue30755
  # https://bugs.python.org/issue30755
@@ -1188,7 +1188,7 @@ def set_language(grass_config_dir):
  # See bugs #3441 and #3423
  try:
  locale.setlocale(locale.LC_ALL, "C.UTF-8")
- except locale.Error as e:
+ except locale.Error:
  # All lost. Setting to C as much as possible.
  # We can not call locale.normalize on C as it
  # will transform it to en_US and we already know
@@ -1571,7 +1571,7 @@ def say_hello():
 
  revision = linerev.split(" ")[1]
  sys.stderr.write(" (" + revision + ")")
- except:
+ except Exception:
  pass
 
 
@@ -1937,7 +1937,7 @@ def print_params(params):
  try:
  revision = linerev.split(" ")[1]
  sys.stdout.write("%s\n" % revision[1:])
- except:
+ except Exception:
  sys.stdout.write("No SVN revision defined\n")
  elif arg == "version":
  sys.stdout.write("%s\n" % GRASS_VERSION)