fix(flake8): Fix code style

Author: travishen

src/apps/surveys18/admin.py

@@ -105,6 +105,7 @@ def before_import_row(self, row, row_number=None, **kwargs):
             stratify_code_column_name: Stratify.objects.get(code=stratify_code)
         })
 
+
 class ProductFilter(SimpleListFilter):
     title = "Product"
     parameter_name = "product"

src/apps/surveys18/models.py

@@ -1405,6 +1405,7 @@ def __str__(self):
     def __unicode__(self):
         return str(self.name)
 
+
 class Stratify(Model):
     """
        field=公畝;revenue=萬元

src/apps/surveys19/admin.py

@@ -262,4 +262,4 @@ class FarmerStatAdmin(ExportMixin, admin.ModelAdmin):
 admin.site.register(BuilderFile)
 admin.site.register(CityTownCode)
 admin.site.register(FarmerStat, FarmerStatAdmin)
-admin.site.register(Stratify, StratifyAdmin)
+admin.site.register(Stratify, StratifyAdmin)

src/config/export/statistics/surveys18.py

@@ -36,6 +36,7 @@ def get_lack_farmer_ids(self):
     def get_region(cls, survey):
         return survey.farmer_stat.region
 
+
 class StatisticsExporter106(StatisticsQueryHelper106):
 
     def __init__(self):

src/config/export/statistics/surveys19.py

@@ -34,6 +34,7 @@ def get_lack_farmer_ids(self):
     def get_region(cls, survey):
         return survey.farm_location.code.region
 
+
 class StatisticsExporter107(StatisticsQueryHelper107):
 
     def __init__(self):

src/config/export/statistics/surveys20.py

@@ -34,6 +34,7 @@ def get_lack_farmer_ids(self):
     def get_region(cls, survey):
         return survey.farm_location.code.region
 
+
 class StatisticsExporter108(StatisticsQueryHelper108):
 
     def __init__(self):

src/config/export/tasks.py

@@ -12,6 +12,7 @@
 from .statistics import StatisticsExporter106, StatisticsExporter107, StatisticsExporter108
 from .full_data import SurveyRelationGeneratorFactory107, SurveyRelationGeneratorFactory108
 
+
 @app.task
 def async_export_full_data(year, email):
     factory_map = {
@@ -57,6 +58,7 @@ def async_export_full_data(year, email):
         except Exception:
             pass
 
+
 @app.task
 def async_export_statistics(year, email):
     exporter_map = {
@@ -99,6 +101,7 @@ def async_export_statistics(year, email):
         except Exception:
             pass
 
+
 @app.task
 def async_export_yearly_compare_statistics(y1, y2, email):
     try:

src/config/export/yearly_compare_statistics.py

@@ -268,7 +268,6 @@ def process_short_term_lacks(self):
                         cell_value = self.sheet4[f'{column2}{row}'].value or 0
                         self.sheet4[f'{column2}{row}'] = cell_value + sum_workers
 
-
     def __call__(self, *args, **kwargs):
         self.process_title()
         self.process_total()