diff options
Diffstat (limited to 'django/contrib/gis/utils/layermapping.py')
| -rw-r--r-- | django/contrib/gis/utils/layermapping.py | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/django/contrib/gis/utils/layermapping.py b/django/contrib/gis/utils/layermapping.py index e2bf30200e..a4cd04dc05 100644 --- a/django/contrib/gis/utils/layermapping.py +++ b/django/contrib/gis/utils/layermapping.py @@ -107,10 +107,10 @@ class LayerMapping: using=None, ): """ - A LayerMapping object is initialized using the given Model (not an instance), - a DataSource (or string path to an OGR-supported data file), and a mapping - dictionary. See the module level docstring for more details and keyword - argument usage. + A LayerMapping object is initialized using the given Model (not an + instance), a DataSource (or string path to an OGR-supported data file), + and a mapping dictionary. See the module level docstring for more + details and keyword argument usage. """ # Getting the DataSource and the associated Layer. if isinstance(data, (str, Path)): @@ -227,7 +227,8 @@ class LayerMapping: 'Given mapping field "%s" not in given Model fields.' % field_name ) - # Getting the string name for the Django field class (e.g., 'PointField'). + # Getting the string name for the Django field class (e.g., + # 'PointField'). fld_name = model_field.__class__.__name__ if isinstance(model_field, GeometryField): @@ -262,9 +263,9 @@ class LayerMapping: % (fld_name, "(dim=3)" if coord_dim == 3 else "", ltype) ) - # Setting the `geom_field` attribute w/the name of the model field - # that is a Geometry. Also setting the coordinate dimension - # attribute. + # Setting the `geom_field` attribute w/the name of the model + # field that is a Geometry. Also setting the coordinate + # dimension attribute. self.geom_field = field_name self.coord_dim = coord_dim fields_val = model_field @@ -424,7 +425,8 @@ class LayerMapping: digits = dtup[1] d_idx = dtup[2] # index where the decimal is - # Maximum amount of precision, or digits to the left of the decimal. + # Maximum amount of precision, or digits to the left of the + # decimal. max_prec = model_field.max_digits - model_field.decimal_places # Getting the digits to the left of the decimal place for the @@ -446,7 +448,8 @@ class LayerMapping: elif isinstance(ogr_field, (OFTReal, OFTString)) and isinstance( model_field, models.IntegerField ): - # Attempt to convert any OFTReal and OFTString value to an OFTInteger. + # Attempt to convert any OFTReal and OFTString value to an + # OFTInteger. try: val = int(ogr_field.value) except ValueError: @@ -533,7 +536,10 @@ class LayerMapping: ) from exc def geometry_field(self): - "Return the GeometryField instance associated with the geographic column." + """ + Return the GeometryField instance associated with the geographic + column. + """ # Use `get_field()` on the model's options so that we # get the correct field instance if there's model inheritance. opts = self.model._meta @@ -542,7 +548,8 @@ class LayerMapping: def make_multi(self, geom_type, model_field): """ Given the OGRGeomType for a geometry and its associated GeometryField, - determine whether the geometry should be turned into a GeometryCollection. + determine whether the geometry should be turned into a + GeometryCollection. """ return ( geom_type.num in self.MULTI_TYPES @@ -583,12 +590,13 @@ class LayerMapping: When this keyword is set, status information will be printed giving the number of features processed and successfully saved. By default, progress information will pe printed every 1000 features processed, - however, this default may be overridden by setting this keyword with an - integer for the desired interval. + however, this default may be overridden by setting this keyword with + an integer for the desired interval. stream: Status information will be written to this file handle. Defaults to - using `sys.stdout`, but any object with a `write` method is supported. + using `sys.stdout`, but any object with a `write` method is + supported. silent: By default, non-fatal error notifications are printed to stdout, but @@ -631,8 +639,8 @@ class LayerMapping: # Constructing the model using the keyword args is_update = False if self.unique: - # If we want unique models on a particular field, handle the - # geometry appropriately. + # If we want unique models on a particular field, + # handle the geometry appropriately. try: # Getting the keyword arguments and retrieving # the unique model. @@ -688,8 +696,8 @@ class LayerMapping: "Processed %d features, saved %d ...\n" % (num_feat, num_saved) ) - # Only used for status output purposes -- incremental saving uses the - # values returned here. + # Only used for status output purposes -- incremental saving uses + # the values returned here. return num_saved, num_feat if self.transaction_decorator is not None: @@ -708,8 +716,8 @@ class LayerMapping: n_i = len(indices) for i, end in enumerate(indices): - # Constructing the slice to use for this step; the last slice is - # special (e.g, [100:] instead of [90:100]). + # Constructing the slice to use for this step; the last slice + # is special (e.g, [100:] instead of [90:100]). if i + 1 == n_i: step_slice = slice(beg, None) else: |