Rule Definition
In Python any first statement being a standalone string expression (within a module, class, function or method) is interpreted as a documentation string (or docstring). This normalized format for documentation is leveraged by many tools in the Python ecosystem. Long docstring lines can have a negative impact on API readability and thus slow down its interpretation and eventual utilization.

Remediation
Wrap docstrings following PEP-8 conventions.

Violation Code Sample

def my_function():
  """This is a too ........... long ................. docstring ......................."""

Fixed Code Sample

def my_function():
  """
  This is a multiline
  docstring
  """