Python message patterns

Here is a comprehensive list of exception message patterns the default grouping algorithm recognizes in python. For each pattern you will find:

• Condition: circumstances under which we apply the pattern
• Patterns: one or more regular expressions that we use to match against the exception message
• Applied grouping: the fields we include when computing the fingerprint when the pattern matches

AttributeError

• Condition:

  • language is python
  • root exception class is AttributeError

• Patterns:

  ^'<object>' object has no attribute '<attribute>'$

  • object: (\w+)
  • attribute: (\w+)

• Applied grouping:

  • Include object and attribute in the fingerprint

DoesNotExist

• Condition:

  • language is python
  • root exception class is DoesNotExist

• Patterns:

  ^<model> matching query does not exist\.$

  • model: (\w+)

• Applied grouping:

  • Include model in the fingerprint

HTTPError

• Condition:

  • language is python
  • root exception class is HTTPError

• Patterns:

  ^<status_code> Client Error: <error> for url: <url>$

  • status_code: (4\d\d)
  • error: (.*)
  • url: (\S+)
  ^<status_code> Server Error: <error> for url: <url>$

  • status_code: (5\d\d)
  • error: (.*)
  • url: (\S+)

• Applied grouping:

  • Include status_code in the fingerprint

IndexError

• Condition:

  • language is python
  • root exception class is IndexError

• Patterns:

  ^<iterable> index out of range$

  • iterable: (\w+)

• Applied grouping:

  • Do not include any variables

NameError - (local) Name not defined

• Condition:

  • language is python
  • root exception class is NameError

• Patterns:

  ^name '<variable_name>' is not defined$

  • variable_name: (\S+)

• Applied grouping:

  • Include variable_name in the fingerprint

NameError - Global name not defined

• Condition:

  • language is python
  • root exception class is NameError

• Patterns:

  ^global name '<variable_name>' is not defined$

  • variable_name: (\S+)

• Applied grouping:

  • Include variable_name in the fingerprint

TypeError - No method defined

• Condition:

  • language is python
  • root exception class is TypeError

• Patterns:

  ^'<class_name>' object is not subscriptable$

  • class_name: (\S+)
  ^'<class_name>' object is not iterable$

  • class_name: (\S+)
  ^'<class_name>' object is not callable

  • class_name: (\S+)
  ^object of type '<class_name>' has no <method_name>$

  • class_name: (\S+)
  • method_name: (\S+)

• Applied grouping:

  • Include class_name and method_name in the fingerprint

TypeError - Unsupported operator

• Condition:

  • language is python
  • root exception class is TypeError

• Patterns:

  ^unsupported operand type\(s\) for <operator>: '<lhs>' and '<rhs>'$

  • operator: (\S+)
  • lhs: (\S+)
  • rhs: (\S+)
  ^'<operator>' not supported between instances of '<lhs>' and '<rhs>'$

  • operator: (\S+)
  • lhs: (\S+)
  • rhs: (\S+)

• Applied grouping:

  • Include lhs and rhs in the fingerprint

TypeError - Object is not JSON serializable

• Condition:

  • language is python
  • root exception class is TypeError

• Patterns:

  ^Object of type <class_name> is not JSON serializable$

  • class_name: (\S+)

• Applied grouping:

  • Include class_name in the fingerprint