Cloned from launchpad blueprint https://blueprints.launchpad.net/heat/+spec/reduce-flake8-ignored-rules.

Description:

Heat tox.ini has several ignored flake/pep8 rules. To make code more clean would be better to reduce it's numbers
 F841 local variable 'json_template' is assigned to but never used
 H201 no 'except:' at least use 'except Exception:'
 H302 import only modules.'bla..' does not import a module
 H306 imports not in alphabetical order
 H404 multi line docstring should start with a summary

First step - H201:
heat/db/sqlalchemy/migrate_repo/versions/015_grizzly.py:157:15: H201  no 'except:' at least use 'except Exception:'
        except:
              ^
heat/db/sqlalchemy/migrate_repo/versions/018_resource_id_uuid.py:35:11: H201  no 'except:' at least use 'except Exception:'
    except:
          ^
heat/engine/resource.py:414:15: H201  no 'except:' at least use 'except Exception:'
        except:
              ^
heat/engine/resource.py:638:15: H201  no 'except:' at least use 'except Exception:'
        except:
              ^
heat/engine/scheduler.py:242:31: H201  no 'except:' at least use 'except Exception:'
                        except:
                              ^
heat/engine/scheduler.py:257:19: H201  no 'except:' at least use 'except Exception:'
            except:
                  ^
heat/engine/scheduler.py:305:15: H201  no 'except:' at least use 'except Exception:'
        except:
              ^
heat/engine/scheduler.py:419:15: H201  no 'except:' at least use 'except Exception:'
        except:
              ^
heat/tests/test_engine_service.py:223:19: H201  no 'except:' at least use 'except Exception:'
            except:
                  ^
heat/tests/utils.py:69:15: H201  no 'except:' at least use 'except Exception:'
        except:
              ^
heat/tests/utils.py:107:15: H201  no 'except:' at least use 'except Exception:'
        except:


Specification URL (additional information):

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