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Function _resolve_output_field has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _resolve_output_field(self):
        """
        Attempt to infer the output type of the expression. If the output
        fields of all source fields match then, simply infer the same type
        here. This isn't always correct, but it makes sense most of the time.
Severity: Minor
Found in django/db/models/expressions.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function as_sql has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def as_sql(self, compiler, connection, template=None, case_joiner=None, **extra_context):
        connection.ops.check_expression_support(self)
        if not self.cases:
            return compiler.compile(self.default)
        template_params = {**self.extra, **extra_context}
Severity: Minor
Found in django/db/models/expressions.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function get_prep_lookup has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def get_prep_lookup(self):
        if hasattr(self.rhs, 'resolve_expression'):
            return self.rhs
        prepared_values = []
        for rhs_value in self.rhs:
Severity: Minor
Found in django/db/models/lookups.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function __set__ has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def __set__(self, instance, value):
        super().__set__(instance, value)
        # If the primary key is a link to a parent model and a parent instance
        # is being set, update the value of the inherited pk(s).
        if self.field.primary_key and self.field.remote_field.parent_link:
Severity: Minor
Found in django/db/models/fields/related_descriptors.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function to_python has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def to_python(self, value):
        if self.null and value in self.empty_values:
            return None
        if value in (True, False):
            # 1/0 are equal to True/False. bool() converts former to latter.
Severity: Minor
Found in django/db/models/fields/__init__.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function ordered has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def ordered(self):
        """
        Return True if the QuerySet is ordered -- i.e. has an order_by()
        clause or a default ordering on the model (or is empty).
        """
Severity: Minor
Found in django/db/models/query.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function deconstruct has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def deconstruct(self):
        name, path, args, kwargs = super().deconstruct()
        if self.path != '':
            kwargs['path'] = self.path
        if self.match is not None:
Severity: Minor
Found in django/db/models/fields/__init__.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function get_col has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def get_col(self, alias, output_field=None):
        if output_field is None:
            output_field = self.target_field
            while isinstance(output_field, ForeignKey):
                output_field = output_field.target_field
Severity: Minor
Found in django/db/models/fields/related.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function pre_sql_setup has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def pre_sql_setup(self):
        """
        If the update depends on results from other tables, munge the "where"
        conditions to match the format required for (portable) SQL updates.

Severity: Minor
Found in django/db/models/sql/compiler.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function get_converters has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def get_converters(self, expressions):
        converters = {}
        for i, expression in enumerate(expressions):
            if expression:
                backend_converters = self.connection.ops.get_db_converters(expression)
Severity: Minor
Found in django/db/models/sql/compiler.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function deconstruct has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def deconstruct(self):
        name, path, args, kwargs = super().deconstruct()
        del kwargs['to_fields']
        del kwargs['from_fields']
        # Handle the simpler arguments
Severity: Minor
Found in django/db/models/fields/related.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function add has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def add(self, objs, source=None, nullable=False, reverse_dependency=False):
        """
        Add 'objs' to the collection of objects to be deleted.  If the call is
        the result of a cascade, 'source' should be the model that caused it,
        and 'nullable' should be set to True if the relation can be null.
Severity: Minor
Found in django/db/models/deletion.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function contribute_to_class has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def contribute_to_class(self, cls, name, private_only=False):
        """
        Register the field with the model class it belongs to.

        If private_only is True, create a separate instance of this field
Severity: Minor
Found in django/db/models/fields/__init__.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _execute_create_test_db has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _execute_create_test_db(self, cursor, parameters, keepdb=False):
        try:
            if keepdb and self._database_exists(cursor, parameters['dbname']):
                # If the database should be kept and it already exists, don't
                # try to create a new one.
Severity: Minor
Found in django/db/backends/postgresql/creation.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function apply_converters has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def apply_converters(self, rows, converters):
        connection = self.connection
        converters = list(converters.items())
        for row in map(list, rows):
            for pos, (convs, expression) in converters:
Severity: Minor
Found in django/db/models/sql/compiler.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function demote_joins has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def demote_joins(self, aliases):
        """
        Change join type from LOUTER to INNER for all joins in aliases.

        Similarly to promote_joins(), this method must ensure no join chains
Severity: Minor
Found in django/db/models/sql/query.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function lookup_cast has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def lookup_cast(self, lookup_type, internal_type=None):
        lookup = '%s'

        # Cast text lookups to text to allow things like filter(x__contains=4)
        if lookup_type in ('iexact', 'contains', 'icontains', 'startswith',
Severity: Minor
Found in django/db/backends/postgresql/operations.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _get_index_tablespace_sql has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _get_index_tablespace_sql(self, model, fields, db_tablespace=None):
        if db_tablespace is None:
            if len(fields) == 1 and fields[0].db_tablespace:
                db_tablespace = fields[0].db_tablespace
            elif model._meta.db_tablespace:
Severity: Minor
Found in django/db/backends/base/schema.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _alter_field_type_workaround has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _alter_field_type_workaround(self, model, old_field, new_field):
        """
        Oracle refuses to change from some type to other type.
        What we need to do instead is:
        - Add a nullable version of the desired field with a temporary name. If
Severity: Minor
Found in django/db/backends/oracle/schema.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _setup_environment has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

def _setup_environment(environ):
    # Cygwin requires some special voodoo to set the environment variables
    # properly so that Oracle will see them.
    if platform.system().upper().startswith('CYGWIN'):
        try:
Severity: Minor
Found in django/db/backends/oracle/base.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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