AWS CloudFormation Linter

Name used prior global declarationPYL-E0118 Misplaced format functionPYL-E0119 Method hidden by an attributePYL-E0202 Method has no argumentPYL-E0211 Invalid `slots` objectPYL-E0236 Class has duplicate basesPYL-E0241 `break` statement used outside of a `while` or `for` loopFLK-F701 `continue` statement outside of a `while` or `for` loopFLK-F702 `init` method converted to generatorPYL-E0100 Abstract class instantiatedPYL-E0110 Multiple values found for keyword argumentPYL-E1132 Bad reversed sequencePYL-E0111 an undefined __future__ feature name was importedFLK-F407 `iter` returns a non-iteratorPYL-E0301 Invalid return for `__len__`PYL-E0303 Invalid object found in `__all__`PYL-E0604 Attempting to unpack a non-sequence objectPYL-E0633 `yield` or `yield from` statement used outside of a functionFLK-F704 Unsupported binary operationPYL-E1131 `return` statement used with arguments inside a generatorFLK-F705 Duplicate argument in function definitionFLK-F831 Invalid slots objectPYL-E0238 Inconsistent method resolution orderPYL-E0240 Exception context set to something which is not an exception, nor NonePYL-E0703 Object which is not a context manager used with the `with` statementPYL-E1129 Dictionary key is unhashablePYL-E1140 Invalid syntaxFLK-E999 Bad `except` order foundPYL-E0701 Object of unsupported type raisedPYL-E0702 The raise statement is not inside an except clausePYL-E0704 Unary operand used on an unsupported objectPYL-E1130 Two or more starred expressions in an assignment (a, *b, *c = d)FLK-F622 Exception caught which does not inherit from `Exception`PYL-E0712 Assigning result of a function call, where the function has no returnPYL-E1111 Missing argument in function callPYL-E1120 Too many positional arguments in function callPYL-E1121 `return` found in `__init__`PYL-E0101 `return` used outside of a functionPYL-E0104 `yield` used outside of functionPYL-E0105 Unexpected keyword argument in function callPYL-E1123 Statement not reachable on executionPYL-W0101 Dangerous default argumentPYL-W0102 Argument passed both by position and keyword in function callPYL-E1124 `assert` called on tuplePYL-W0199 Missing mandatory keyword argument in function callPYL-E1125 Catching previously caught exceptionPYL-W0705 Except handler raises immediatelyPYL-W0706 Invalid operation on exceptionsPYL-W0716 Non-iterable value used in an iterating contextPYL-E1133 Flask app detected with DEBUG mode enabledPTC-W0029 Inheritance is not from a classPYL-E0239 Variable used before assignmentPYL-E0601 Undefined name detectedPYL-E0602 Undefined name detected in `__all__`PYL-E0603 Logging format string contains too many argumentsPYL-E1205 `global` variable is undefinedPYL-W0601 Class variable conflicts with slotsPYL-E0242 Logging format string contains too few argumentsPYL-E1206 not-async-context-managerPYL-E1701 Invalid format characterPYL-E1300 Not enough arguments in format stringPYL-E1306 Set size changed during iterationPTC-W0055 Assigning to an attribute not defined in class `__slots__`PY-W0076 Exception to catch is the result of a binary operationPYL-W0711 Loop variable used outside the loopPYL-W0631 `return` statement used outside of a function or methodFLK-F706 File opened without the `with` statementPTC-W0010 Format string contains excess argumentsPYL-E1305 Debugger activation detectedPTC-W0014 Audit required: Insecure cipherBAN-W1004 Use of an insecure `expatreader` methodBAN-B315 import module shadowed by loop variableFLK-F402 Dictionary key variable name repeated with different valuesFLK-F602 Insecure `xmlrpclib` import detectedBAN-B411 Method should have `self` as the first argumentPYL-E0213 New column added in database with a default valuePYL-W5198 Redundant `content_type` parameter for `JsonResponse()` detectedPYL-R5103 Combined specification detected for format stringPYL-W1305 Invalid value passed to access env variablePYL-E1507 Accessed a removed attribute on the `sys` modulePYL-W1660 Cyclic import foundPYL-R0401 Undefined format string keyPYL-E1304 Use of `execfile` built-in detectedPYL-W1606 Mixed format stringPYL-E1302 `HttpResponse()` returns `application/json` content typePYL-R5102 Invalid format indexPYL-W1307 Keyword argument defined before variable positional argumentsPYL-W1113 Use of `global` at module levelPYL-W0604 Audit required: Insecure hash functionBAN-W1003 Debugger import detectedPTC-W0013 Type hint for with statement is unreliableTYP-036 Invalid star assignment targetPYL-E0113 raising `NotImplemented` is not allowedFLK-F901 Use of `reload` built-in detectedPYL-W1626 Accessed a removed attribute on the operator modulePYL-W1657 Name defined is both `nonlocal` and `global`PYL-E0115 Too many expressions in an assignment with star-unpackingFLK-F621 Method used has been deprecatedPYL-W1505 Use of `apply` built-in detectedPYL-W1601 Consider merging `isinstance` callsPYL-R1701 Use of `cmp` built-in detectedPYL-W1604 `except:` is not the last exception handlerFLK-F707 Built-in function `len` used as conditionPYL-C1802 Format needs mappingPYL-E1303 Use of `_create_unverified_context` detectedBAN-B323 No return value expectedTYP-002 Assignment to a new keywordPYL-W0111 Re-definition found for builtin functionPYL-W0622 Audit required: Insecure hash functionPTC-W1003 Use of `unicode` built-in detectedPYL-W1612 `HttpResponse` used to return JSON responsePYL-R5101 Use `get()` method to access values from a dictionaryPYL-R1715 Use of `tempnam` detectedBAN-B325 I/O operation on a closed file detectedPTC-W0021 Exception might be lostPYL-W0150 Multiple imports for an import name detectedPYL-W0404 Duplicate string formatting argument foundPYL-W1308 Unnecessary comprehensionPTC-W0016 Assert statement used outside of testsBAN-B101 Thread has no target functionPYL-W1506 Insecure permissions set on a fileBAN-B103 Use of deprecated function: `mktemp`BAN-B306 Redundant callPTC-W0017 Use of an insecure method from `xml.etree.ElementTree` detectedBAN-B314 Telnet related module importedBAN-B401 No certificate validation detected for HTTP requestBAN-B501 Illegal operation on filePTC-W0022 Missing host key validation in SSHBAN-B507 Possible shell injection via Paramiko callBAN-B601 Expected an indented blockFLK-E112 Test for membership should be 'not in'FLK-E713 Use of an unneeded `not` detectedPYL-C0113 Consider iterating dictionaryPYL-C0201 Bad classmethod argumentPYL-C0202 Bad metaclass-method argumentPYL-C0203 Slots are recommended to be an iterable, simple string detectedPYL-C0205 Import alias same as original package namePYL-C0414 Misplaced comparison constantPYL-C2201 Unnecessary `else` / `elif` used after `return`PYL-R1705 `StopIteration` detected in a generatorPYL-R1708 Consider using `join`PYL-R1713 Consider using `in`PYL-R1714 Consider using a dictionary comprehensionPYL-R1717 Consider using a set comprehensionPYL-R1718 Unnecessary lambda expressionPYL-W0108 Duplicate dictionary keysPYL-W0109 Useless else clause detected on the loopPYL-W0120 `as` with another context manager looks like a tuplePYL-W0124 Conditional statement used with a constant valuePYL-W0125 Comparison with callable detectedPYL-W0143 Bad `staticmethod` argument detectedPYL-W0211 Signature differs in overridden methodPYL-W0222 Abstract method not overriddenPYL-W0223 Future import(s) name after other statementsPYL-W0410 Global variable is declared but not usedPYL-W0602 Unused variable foundPYL-W0612 Function contains unused argumentPYL-W0613 Re-defined variable from outer scopePYL-W0621 Exception caught is very generalPYL-W0703 Assigning result of a function call, where the function returns `None`PYL-E1128 Missing format argument keyPYL-W1303 Missing format attributePYL-W1306 Implicit string concatenation detected in the sequencePYL-W1403 Bad open mode for filePYL-W1501 Shallow copy of `os.environ` detectedPYL-W1507 Unexpected return valueTYP-007 Invalid return `type hint` for async generator functionTYP-010 `Final[...]` shall have at most one type argumentTYP-029 Incompatible redefinition detectedTYP-053 Inconsistent type signatureTYP-025 Invalid assignation to class variableTYP-075 Consider using `any`PY-W0074 Invalid property overrideTYP-017 Invalid type comment detectedTYP-035 Formatted string used as docstringPTC-W0033 Wrong implementation of `overload`TYP-023 Wrong implementation of `final` decoratorTYP-024 Unexpected return type foundTYP-005 Found `yield` statement inside a comprehensionPTC-W0025 Found `yield` statement inside a generator expressionPTC-W0026 Explicit exception raised in the assert messagePTC-W0032 Format string key is not a stringPYL-W1300 Function or method is being redefinedPYL-E0102 Unnecessary `else` / `elif` used after `break`PYL-R1723 Unnecessary `elif` / `else` block after `continue`PYL-R1724 Variable redeclared during assignmentPYL-W0128 Inconsistent overridden methodPYL-W0236 Missing `return` statementTYP-003 Missing return valueTYP-006 Value is not a mappingPYL-E1134 Cell variable defined in loopPYL-W0640 Exceptions are overlappingPYL-W0714 Assignment target contains multiple star expressionsPYL-E0112 Missing `.items()`PYL-E1141 `yield from` inside an `async` functionPYL-E1700 Property defined with parametersPYL-R0206 `if` statement can be simplifiedPYL-R1703 Unnecessary use of comprehensionPYL-R1721 Use of `exit()` or `quit()` detectedPYL-R1722 Missing parentheses for a call in testPYL-W0126 Useless super delegationPYL-W0235 Format string is not validPYL-W1302 `datetime.time` used in a boolean contextPYL-W1502 Implicit enumerate calls foundPTC-W0060 Consider using `all`PY-W0075 Private attribute declared but not usedPTC-W0037 Bad string format typePYL-E1307 `print` statement detectedPYL-E1601 Private method declared but not usedPTC-W0038 Imported name is not used anywhere in the modulePY-W2000 Parameter unpacking detectedPYL-E1602 Private nested class declared but not usedPTC-W0064 Consider using identity comparison with singletonPTC-W0068 Old `raise` syntax detetedPYL-E1604 Consider removing the commented out code blockPY-W0069 Appending to list immediately following its definitionPY-W0070 Adding to set immediately following its definitionPY-W0071 Appending to dictionary immediately following its definitionPY-W0072 Anomalous backslash detectedPY-W0073 Logical operators used when combining SQL column expressionsPY-W0800 Unnecessary use of `json.dumps()` for file dataPY-W0079 Unnecessary use of `json.loads()` for file dataPY-W0078 Use of `sys.maxint` detectedPTC-W0067 Consider merging `startswith`/`endswith` checksPY-W0077 Prefer `list.extend(x)` over `list.append(*x)`PY-W0080 Comparison with itselfPYL-R0124 No `@classmethod` decoratorPYL-R0202 No `@staticmethod` decoratorPYL-R0203 Argument redefined from localPYL-R1704 Statement has no effectPYL-W0104 Use of `coerce` built-in detectedPYL-W1605 Use of `file` built-in detectedPYL-W1607 Use of `long` built-in detectedPYL-W1608 Use of `reduce` built-in detectedPYL-W1610 use of `standarderror` built-in detectedPYL-W1611 Use of `cmp` argument detectedPYL-W1640 `message` attribute accessed on ExceptionPYL-W1645 Use of deprecated `sys.maxint` detectedPYL-W1647 Assignment to `self` or `cls` detectedPYL-W0642 Deprecated form of raising exception detectedFLK-W602 `async` and `await` are reserved keywords starting with Python 3.7FLK-W606 Use `tuple` unpacking to swap variablesPYL-R1712 Bad Python 3 importPYL-W1648 Use of a deprecated `itertools` functionPYL-W1651 Use of a deprecated `types` fieldPYL-W1652 Accessed a removed attribute on the `urllib` modulePYL-W1658 Accessed the removed xreadlines attributePYL-W1659 `exclude` used in a `ModelForm`PYL-W5104 Unsafe parameter given to `subprocess.Popen`PYL-W1509 Use `items()` to iterate over a dictionaryPTC-W0011 Unnecessary generatorPTC-W0015 Audit required: Use of insecure cipherBAN-B304 Audit required: Use of insecure cipher modeBAN-B305 Defining equality for a class without also defining hashabilityPYL-W1641 Module imports itselfPYL-W0406 Audit required: Insecure cipher modeBAN-W1005 No newline at end of fileFLK-W292 `if` expression used can be simplifiedPYL-R1719 Blank line contains whitespaceFLK-W293 Consider using an `if` expressionPYL-R1706 Consider using literal syntax to create the data structurePTC-W0019 Insecure `lxml` import detectedBAN-B410 Bad `type` operand placementPTC-W0024 Useless `return` detectedPYL-R1711 Unnecessary `else`/`elif` used after `raise`PYL-R1720 Protected member accessed from outside the classPYL-W0212 Mismatched parameters in overridden methodPYL-W0221 Bad comparison testPTC-W0023 Test for object identity should be 'is not'FLK-E714 List comprehension redefines nameFLK-F812 Used a variable that was bound inside a comprehensionPYL-W1662 Audit required: Potential SQL injection on `RawSQL` functionBAN-B611 Audit required: Use of `md5`BAN-B303 Logging format string terminated in between conversion specifierPYL-E1201 Local variable name referenced before assignmentFLK-F823 Deletion attempted with unsupported objectPYL-E1138 Missing argument in `super()` callPYL-E1004 Invalid sequence index foundPYL-E1126 New-style class raised which doesn't inherit from `BaseException`PYL-E0710 Bad first argument given in `super()` callPYL-E1003 A non-callable object is being calledPYL-E1102 Unsupported format character used in the logging format stringPYL-E1200 Invalid slice index foundPYL-E1127 Use of jinja2 templates with `autoescape=False` detectedBAN-B701 `list` object used during set creationPTC-W0058 Dictionary size changed during iterationPTC-W0056 `yield` would not work as expected in the magic methodPTC-W0059 Unguarded next inside generatorPTC-W0063 Django app detected with DEBUG mode enabledPY-S0900 Use of insecure `input` method detectedPTC-W1002 Invalid metaclassPYL-E1139 Invalid type for `__all__`TYP-056 Missing parameter in `Literal[...]` type hintTYP-042 Invalid `Literal[...]` type hintTYP-041 Unsupported generic type annotationTYP-044 Do not define functions named 'l', 'O', or 'I'FLK-E743 Detected calls to FTP-related functionsBAN-B321 Unused format string argumentPYL-W1304 Invalid definition of generic aliasTYP-073 Deprecated type hint usedTYP-038 Format string truncatedPYL-E1301 Incompatible type detectedTYP-050 Use of `raw_input` built-in detectedPYL-W1609 Unexpected indentationFLK-E113 Redundant `cast` detectedTYP-071 `TypeVar` value is not compatibleTYP-057 Invalid type hint for `ClassVar`TYP-047 Useless inheritance from `object`PYL-R0205 `nonlocal` name found without bindingPYL-E0117 Use of an insecure method from `xml.dom.pulldom` detectedBAN-B319 Use of a deprecated module detectedPYL-W0402 Use of an insecure method from `xml.dom.minidom` detectedBAN-B318 Insecure library importedBAN-B413 Unbalanced tuple unpackingPYL-W0632 Invalid use of `TypeVar` foundTYP-058 Type is not indexbleTYP-062 Indentation contains mixed spaces and tabsFLK-E101 Invalid `type hint`TYP-008 Invalid star expressionPYL-E0114 Multiple statements on one line (def)FLK-E704 Use of an insecure `expatbuilder` methodBAN-B316 Expression not assignedPYL-W0106 Can not assign to name without explicit type anotationTYP-064 Comparing to literalPYL-R0123 Invalid type hint parameterTYP-011 `from module import *` is only allowed at module levelFLK-F406 Unsupported `Type` declarationTYP-032 Exception arguments suggest string formatting might be intendedPYL-W0715 Inconsistent number or arguments detected for type hintTYP-046 Use of `buffer` built-in detectedPYL-W1603 Invalid type detected for type castTYP-037 Use of an insecure method from `xml.sax` detectedBAN-B317 Unused import from wildcard import foundPYL-W0614 Use of a non-existent operator detectedPYL-E0107 Explicitly declared types are required for all `Protocol` membersTYP-031 Consider decorating method with `@staticmethod`PYL-R0201 Trying to declare type of a type variableTYP-034 Uexpected type hintTYP-040 Invalid return `type hint` for generator functionTYP-009 Audit required: Use of `eval`PYL-W0123 Do not define classes named 'l', 'O', or 'I'FLK-E742 Special method defined with an invalid signaturePYL-E0302 Invalid string codec detectedPYL-W1646 Starting a process with a shell detectedBAN-B605 Bad metaclass-classmethod argumentPYL-C0204 `__init__` method from the base class not calledPYL-W0231 Trailing comma tuple detectedPYL-R1707 Indentation is not a multiple of fourFLK-E111 Bad string strip callPYL-E1310 Unpacking in `except`PYL-E1603 Model's `__unicode__` is not callablePYL-E5101 Audit: Binding to all interfaces detected with hardcoded valuesBAN-B104 Multiple statements detected on one lineFLK-E701 Insecure `pycryptodome` library importedBAN-B414 Use of `xrange` built-in detectedPYL-W1613 Model has `__unicode__` methodPYL-W5102 Use of an insecure method from `lxml.etree`BAN-B320 Audit required: Use of `exec`PYL-W0122 Audit required: Use of `pickle` moduleBAN-B301 Audit required: Use of `mark_safe` detectedBAN-B308 Audit required: Use of an insecure method method from `urllib` detectedBAN-B310 Audit required: Use of telnet detectedBAN-B312 Audit required: Insecure cipherPTC-W1004 Hardcoded temporary directory detectedBAN-B108 Use of `HTTPSConnection` may not be secure in Python versions < 2.7.9BAN-B309 Use of an insecure method from `xml.etree.cElementTree` detectedBAN-B313 File Transfer Protocol (FTP) related module importedBAN-B402 Detected use of a bad version of `SSL`BAN-B502 Detected use of a weak cryptographic keyBAN-B505 Unsafe usage of `yaml.load` function detectedBAN-B506 Detected subprocess `popen` call with shell equals `True`BAN-B602 Function call with `shell=True` parameter identifiedBAN-B604 Use of insecure `mako` templates detectedBAN-B702 Use of insecure cipher modePTC-W1005 Invalid encoded dataPYL-W0512 Invalid `envvar` defaultPYL-W1508 Pythagorean calculation detected with sub-optimal numericsPTC-W0028 Type error while assignmentTYP-014 Untyped function called in typed contextTYP-061 Unsupported type provided to operandTYP-052 Incompatible types detectedTYP-060 Inconsistent number of argument for type aliasTYP-069 Use of invalid type detectedTYP-059 Invalid parameter given to `Literal`TYP-066 Empty module foundPTC-W0030 Invalid return detected in callableTYP-055 Invalid type comment or type annotation detectedTYP-043 Invalid target for type aliasTYP-074 Type variable is bound by an outer classTYP-070 Invalid use of type variableTYP-018 Inconsistent use of `type annotation` and `type comment`TYP-021 Unexpected type definition detectedTYP-033 Invalid type hintTYP-020 Wrong use of `Final` typeTYP-045 Type variable is not used in type contextTYP-065 Invalid number of type parameters detectedTYP-067 Unexpected argument given to type variableTYP-072 `f-string` used without any expressionPTC-W0027 Missing free `type variable`TYP-063 `_promote` expects type as first argumentTYP-039 Can not subclass value of type `Any`TYP-028 Unnecessary use of `getattr`PTC-W0034 Missing type parameterTYP-022 Duplicate type variables detectedTYP-026 Can not omit type hint in `Final[...]`TYP-030 `hasattr` used to check if the object is callablePTC-W0035 All type variables should be listed hereTYP-027 Invalid type of decorator constructorTYP-013 Audit required: Sensitive data might be exposedPTC-W1006 Use of a method on dictionary's `get` method detectedPTC-W0031 Simplify boolean expressionPYL-R1709 Consider using `max` builtinPTC-W0042 Consider using `min` builtinPTC-W0041 Format string contains unused keyPYL-W1301 Using deprecated method `assertEquals`PTC-W0040 Constant passed to unittest `assert<Bool>`PYL-W1503 Use of `len(seq) - 1` to get last element of an iterablePTC-W0044 Unnecessary `delete` statement in a local scopePTC-W0043 Admin class not in app's `admin.py`PTC-W0903 Abstract method does not raise `NotImplementedError`PTC-W0053 Consider using `TextField` instead of `CharField`PTC-W0904 Unit test class with no testsPTC-W0046 Branches of the `if` statement have similar implementationPTC-W0051 String field is nullablePTC-W0901 Set declaration has duplicate elementsPTC-W0050 Audit required: Server hostname may not be verifiedPTC-W6002 Function/method with an empty bodyPTC-W0049 Sequence value overwritten unconditionallyPTC-W0057 Field allows null but not blankPTC-W0906 Special method should return `NotImplemented`PTC-W0054 Audit required: Server certificate may not be verifiedPTC-W6001 Empty block of code foundPTC-W0047 Bad async magic methodPTC-W0045 `if` statements can be mergedPTC-W0048 `with` statements can be mergedPTC-W0062 Unused nested function or class detectedPTC-W0065 Use of deprecated `NullBooleanField`PTC-W0900 Primary key is not uniquePTC-W0902 Nullable `ManyToManyField` foundPTC-W0905 Missing backward migrationPTC-W0910 Backticks are deprecated, use `repr()`PYL-E1605 Security middleware not activatedPY-S0909 Use of both safe and unsafe HTTP methods for a viewPY-S6007 Setting loose POSIX file permissions is security-sensitivePY-S6008 Use of long suffixPYL-E1606 Old inequality operator usedPYL-E1607 Insecure use of `format_html` detectedPY-S0901 Use of old octal literalPYL-E1608 Non ascii bytes literals detectedPYL-E1610 Logging is not lazyPYL-W1201 Use of `basestring` built-in detectedPYL-W1602 Use of deprecated `string` function detectedPYL-W1649 Used an exception object that was bound by an except handlerPYL-W1661 Audit required: Use of `marshal` moduleBAN-B302 Audit required: Risk of possible SQL injection vector through string-based query constructionBAN-B608 Audit required: Possible wildcard injection in call: `subprocess.Popen`BAN-B609 Unsupported type applicationTYP-019 Invalid type used for tuple indexTYP-054 Docstring is over-indentedFLK-D208 Tab after comma detectedFLK-E242 Continuation line over-indented for hanging indentFLK-E126 Indentation is not a multiple of four in commentsFLK-E114 Unnecessary `pass` statementPYL-W0107 Unexpected indentation in commentsFLK-E116 Doc line too longFLK-W505 Docstring is under-indentedFLK-D207 Indentation contains tabsFLK-W191 Multiple spaces after ','FLK-E241 Too many leading `#` for block commentFLK-E266 Closing bracket does not match indentation of opening bracket's lineFLK-E123 Missing whitespace around operatorFLK-E225 Model missing `__unicode__` methodPYL-W5101 Missing whitespace after keywordFLK-E275 Unnecessary suppression of type checking issueTYP-001 Trailing whitespace detectedFLK-W291 Named lambda expression detectedFLK-E731 Tab found after operatorFLK-E224 Module level import not at the top of the fileFLK-E402 Too many blank lines foundFLK-E303 At least two spaces before inline commentFLK-E261 Tab after keyword detectedFLK-E273 Unexpected line ending format foundPYL-C0328 Missing whitespace around arithmetic operatorFLK-E226 Continuation line missing indentation or outdentedFLK-E122 Continuation line unaligned for hanging indentFLK-E131 The backslash is redundant between bracketsFLK-E502 Missing whitespace around modulo operatorFLK-E228 Multiple imports on one lineFLK-E401 Expected an indented block in commentsFLK-E115 Tab found before operatorFLK-E223 Continuation line is under-indented for hanging indentFLK-E121 Blank lines found after function decoratorFLK-E304 Unnecessary literalPTC-W0018 Multiple statements detected on one lineFLK-E702 Mixed line endings foundPYL-C0327 Bad indentation detectedPYL-W0311 Whitespace before closing parenthesisFLK-E202 Do not use variables named 'l', 'O', or 'I'FLK-E741 Multiple blank lines detected at end of the fileFLK-W391 Inconsistent return statementsPYL-R1710 Chained comparison detectedPYL-R1716 Attribute defined outside `__init__`PYL-W0201 Line break before binary operatorFLK-W503 Unnecessary semicolonPYL-W0301 Visually indented line with same indent as next logical lineFLK-E129 Docstring should be indented with spaces, not tabsFLK-D206 Use r”“” if any backslashes in a docstringFLK-D301 Continuation line with same indent as next logical lineFLK-E125 Multiple spaces found after operatorFLK-E222 Multiple spaces before keywordFLK-E272 Missing type annotation for callableTYP-051 Inline comment should start with `# `FLK-E262 Tab before keyword detectedFLK-E274 Expected 1 blank lineFLK-E301 Expected 2 blank linesFLK-E302 Whitespace after opening parenthesis detectedFLK-E201 Use of single quote detected in docstringFLK-D300 Continuation line over-indented for visual indentFLK-E127 Multiple spaces found before operatorFLK-E221 Continuation line under-indented for visual indentFLK-E128 Unexpected spaces around keyword / parameter equalsFLK-E251 Multiple spaces after keywordFLK-E271 Closing bracket does not match visual indentationFLK-E124 Expected 1 blank line before a nested definitionFLK-E306 Line too longFLK-E501 Statement ends with a semicolonFLK-E703 Whitespace before opening parenthesisFLK-E211 Expected 2 blank lines after end of function or classFLK-E305 Unnecessary typecastPTC-W0020 Use of `FIXME`/`XXX`/`TODO` encounteredPYL-W0511 `global` statement detectedPYL-W0603 Do not use bare `except`, specify exception insteadFLK-E722 Missing whitespace around bitwise or shift operatorFLK-E227 Audit required: Starting a subprocessBAN-B606 Unnecessary parentheses after keywordPYL-C0325 Audit: Starting a process with a partial executable pathBAN-B607 Audit required: Potential SQL injection on `extra` functionBAN-B610 Import of method(s) from `xml.etree` detectedBAN-B405 SSL used with bad defaultsBAN-B503 SSL used with no version specifiedBAN-B504 Missing whitespace after `,`, `;`, or `:`FLK-E231 Block comment should start with `# `FLK-E265 Imports from same package are not groupedPYL-C0412 Invalid type alias detectedTYP-048 Missing type hintTYP-068 Uninferred `lambda expression` typeTYP-012 Missing class docstringPY-D0002 Variable assigned to itselfPYL-W0127 Subprocess run with ignored non-zero exitPYL-W1510 Missing module docstringPY-D0001 No blank lines allowed before class docstringFLK-D211 Multi-line docstring closing quotes should be on a separate lineFLK-D209 1 blank line required after class docstringFLK-D204 No whitespaces allowed surrounding docstring textFLK-D210 Unnecessary `None` provided as defaultPTC-W0039 Missing module/function docstringPY-D0003 No blank lines allowed after function docstringFLK-D202 Unassigned string statementPYL-W0105 First line should not be the function’s “signature”FLK-D402 Redundant `default=None` for a model fieldPTC-W0907 No blank lines allowed before function docstringFLK-D201 Use of `=+` / `=-` looks ambiguousPTC-W0066 Field duplicates the name of its containing classPTC-W0052 Audit required: Sensitive cookie without `secure` attributePTC-W6003 Audit required: Sensitive cookie without `httponly` attributePY-A6004 Use of `unique_for` constrant foundPTC-W0908 Ambiguous augmented assignmentPTC-W0061 Audit required: External control of file name or pathPTC-W6004 Audit required: Configuring loggers can be security-sensitivePY-A6006 Redundant list comprehension can be replaced using generatorPYL-R1728 Consider using f-stringsPYL-C0209 Positional arguments are out of orderPYL-W1114 Lazy formatting of message string passed to logging modulePYL-W1202 Formatted string passed to logging modulePYL-W1203 Function with cyclomatic complexity higher than thresholdPY-R1000 One-line docstring should fit on one line with quotesFLK-D200 Model does not explicitly define `__unicode__`PYL-W5103

PYL-W1501

Bad open mode for filePYL-W1501

Major

Bug Risk

The mode with which the file is opened is not valid. Python supports: r, w, a, and x modes with t and b modifiers, for text files and binary files respectively. The + mode can also be used to open the file for updating (reading and writing).

Bad practice

with open('log.txt', 'rw') as logfile:  # Doesn't work
    text = logfile.read()
    logfile.write('test log')

Recommended

with open('log.txt', 'r+') as logfile:
    text = logfile.read()
    logfile.write('test log')

References:

Python open function