pylint是一个不错的代码静态检查工具。将其配置在pycharm中,随时对代码进行分析,确保所有代码都符合pep8规范,以便于养成良好的习惯,将来受用无穷。
第一步,配置pylint
- program: python安装目录下scripts/pylint.exe
- arguments: --output-format=parseable --disable=R -rn --msg-template="{abspath}:{line}: [{msg_id}({symbol}), {obj}] {msg}" $FilePath$
- working firectory: $FileDir$
第二步,使用pylint
第三步,查看输出
补充知识:pylint在pycharm的使用及pylint的配置
pylint作为python代码风格检查工具,接近 PEP8风格,在使用此方法的过程中,发现不仅能让代码更加规范,优雅,更能 发现 隐藏的bug。
pylint在Pycharm中的2种安装方式;
第一种效果展示(优点:通过点击错误点,自动定位到文件位置,省时):
安装步骤在:https://github.com/leinardi/pylint-pycharm 中;
我的设置如下:
使用方法:单文件 检查:先点击 某个文件内容,再点击 绿色开始的箭头 即可;
还可以 整个项目检查,只检查改变的文件 等等;
第二种安装使用效果展示(缺点:需要手动的找到错误文件位置,耗时):
安装步骤在:https://stackoverflow.com/questions/38134086/how-to-run-pylint-with-pycharm
注意点:
使用方法:文件 或文件夹 右击 选择 External Tools => Pylint 即可
2种安装方式总结:
a.通过pycharm的pylint检测 对 忽略检测文件的的 功能失效,此功能 必须 通过命令行才可使用
b.建议使用第一种方式 安装及使用,因为 省时省力
pylint 忽略 文件夹的正确配置及使用操作:
示范 项目结构如图 (忽略检查app和 venv 文件夹的所有文件):
在配置文件中 的 [MASTER]的ignore 的 添加 app,venv 或者 在命令行 中 如下:pylint --ignore app,venv project_name 即可(注意多个忽略之间用 逗号 隔开);
通过命令行(不是pycharm的工具) 运行 脚本即可;命令为 pylint --rcfile=D:\python3.6\pylint_conf\pylint.conf project_name
pylint 禁用某些功能的方法:
在配置文件中的 [MESSAGES CONTROL] 的 disable 添加 想禁用的功能;
如:报错如下;
则 在 disable尾部添加 missing-docstring 即可;
pylint在行级别的代码中 禁用某些功能(也就是 不对所有代码禁用某个检测,只对某行代码禁用某个检测):
教程地址:https://pylint.readthedocs.io/en/latest/user_guide/message-control.html
实例:
在一行代码的 后面 添加注释,便只忽略检查某一行;
在一个文件的 单独一行 使用 则 此行以下 被忽略;
pylint的配置:
注意点:pylint默认的配置 无法 满足实际的开发需求,需要自行调整;如下代码 为 自行调整的结果;
[MASTER] # A comma-separated list of package or module names from where C extensions may # be loaded. Extensions are loading into the active Python interpreter and may # run arbitrary code. extension-pkg-whitelist= # Add files or directories to the blacklist. They should be base names, not # paths. 选择需要忽略检查的文件夹(在pycharm中使用pylint工具忽略文件夹无效,只能在命令行中生效:pylint --ignore weixin,lib project_name) ignore=app,venv,install_file,libs # Add files or directories matching the regex patterns to the blacklist. The # regex matches against base names, not paths. ignore-patterns= # Python code to execute, usually for sys.path manipulation such as # pygtk.require(). #init-hook= # Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the # number of processors available to use. jobs=1 # Control the amount of potential inferred values when inferring a single # object. This can help the performance when dealing with large functions or # complex, nested conditions. limit-inference-results=100 # List of plugins (as comma separated values of python modules names) to load, # usually to register additional checkers. load-plugins= # Pickle collected data for later comparisons. persistent=no # Specify a configuration file. #rcfile= # When enabled, pylint would attempt to guess common misconfiguration and emit # user-friendly hints instead of false-positive error messages. suggestion-mode=yes # Allow loading of arbitrary C extensions. Extensions are imported into the # active Python interpreter and may run arbitrary code. unsafe-load-any-extension=no [MESSAGES CONTROL] # Only show warnings with the listed confidence levels. Leave empty to show # all. Valid levels: HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED. confidence= # Disable the message, report, category or checker with the given id(s). You # can either give multiple identifiers separated by comma (,) or put this # option multiple times (only on the command line, not in the configuration # file where it should appear only once). You can also use "--disable=all" to # disable everything first and then reenable specific checks. For example, if # you want to run only the similarities checker, you can use "--disable=all # --enable=similarities". If you want to run only the classes checker, but have # no Warning level messages displayed, use "--disable=all --enable=classes # --disable=W". 禁用pylint的某些模块 如 显示: Missing class docstring (missing-docstring) 则 添加 括号中的 missing-docstring 到变量中 disable=print-statement, parameter-unpacking, unpacking-in-except, old-raise-syntax, backtick, long-suffix, old-ne-operator, old-octal-literal, import-star-module-level, non-ascii-bytes-literal, raw-checker-failed, bad-inline-option, locally-disabled, file-ignored, suppressed-message, useless-suppression, deprecated-pragma, use-symbolic-message-instead, apply-builtin, basestring-builtin, buffer-builtin, cmp-builtin, coerce-builtin, execfile-builtin, file-builtin, long-builtin, raw_input-builtin, reduce-builtin, standarderror-builtin, unicode-builtin, xrange-builtin, coerce-method, delslice-method, getslice-method, setslice-method, no-absolute-import, old-division, dict-iter-method, dict-view-method, next-method-called, metaclass-assignment, indexing-exception, raising-string, reload-builtin, oct-method, hex-method, nonzero-method, cmp-method, input-builtin, round-builtin, intern-builtin, unichr-builtin, map-builtin-not-iterating, zip-builtin-not-iterating, range-builtin-not-iterating, filter-builtin-not-iterating, using-cmp-argument, eq-without-hash, div-method, idiv-method, rdiv-method, exception-message-attribute, invalid-str-codec, sys-max-int, bad-python3-import, deprecated-string-function, deprecated-str-translate-call, deprecated-itertools-function, deprecated-types-field, next-method-defined, dict-items-not-iterating, dict-keys-not-iterating, dict-values-not-iterating, deprecated-operator-function, deprecated-urllib-function, xreadlines-attribute, deprecated-sys-function, exception-escape, comprehension-escape, wrong-import-position, # 去掉 文件导入位置,不符合实际需求 logging-not-lazy, # 去掉 日志打印相关 missing-docstring, unnecessary-pass, # 去掉 判断 空函数 不能加pass的校验 redefined-builtin, # 去掉 命名和 python内置函数名或类名冲突 的校验,如 python的next()函数,则变量不能命名为next no-self-use, # 去掉 类中没有自己调用的 检测 too-few-public-methods, # 去掉 检测 类中方法太少 的功能 no-else-return, # 去掉 if中有return,else中不能有return的 校验 no-else-raise, # 去掉 if中有raise,else中不能有raise的 校验 # Enable the message, report, category or checker with the given id(s). You can # either give multiple identifier separated by comma (,) or put this option # multiple time (only on the command line, not in the configuration file where # it should appear only once). See also the "--disable" option for examples. enable=c-extension-no-member [REPORTS] # Python expression which should return a note less than 10 (10 is the highest # note). You have access to the variables errors warning, statement which # respectively contain the number of errors / warnings messages and the total # number of statements analyzed. This is used by the global evaluation report # (RP0004). evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10) # Template used to display messages. This is a python new-style format string # used to format the message information. See doc for all details. #msg-template= # Set the output format. Available formats are text, parseable, colorized, json # and msvs (visual studio). You can also give a reporter class, e.g. # mypackage.mymodule.MyReporterClass. output-format=colorized # Tells whether to display a full report or only the messages. reports=yes # Activate the evaluation score. score=yes [REFACTORING] # Maximum number of nested blocks for function / method body;函数或方法的最大嵌套块数 max-nested-blocks=5 # Complete name of functions that never returns. When checking for # inconsistent-return-statements if a never returning function is called then # it will be considered as an explicit return statement and no message will be # printed. never-returning-functions=sys.exit [BASIC] # 基础设置 # Naming style matching correct argument names. 参数命名风格 argument-naming-style=snake_case # Regular expression matching correct argument names. Overrides argument- # naming-style. 不能有大写字母 argument-rgx=([^A-Z]+$) # Naming style matching correct attribute names.属性命名风格 attr-naming-style=snake_case # Regular expression matching correct attribute names. Overrides attr-naming- # style.不能有大写字母 attr-rgx=([^A-Z]+$) # Bad variable names which should always be refused, separated by a comma. 应该被拒绝的变量命名 穷举,用逗号隔开 bad-names=foo, bar, baz, toto, tutu, tata # Naming style matching correct class attribute names.类属性命名风格 class-attribute-naming-style=any # Regular expression matching correct class attribute names. Overrides class- # attribute-naming-style. #class-attribute-rgx= # Naming style matching correct class names.类命名风格 class-naming-style=PascalCase # Regular expression matching correct class names. Overrides class-naming- # style. #class-rgx= # Naming style matching correct constant names.常量命名风格 const-naming-style=any # Regular expression matching correct constant names. Overrides const-naming- # style. #const-rgx= # Minimum line length for functions/classes that require docstrings, shorter # ones are exempt. 函数或类 的文档注释的最短长度 docstring-min-length=-1 # Naming style matching correct function names. 函数命名风格 function-naming-style=snake_case # Regular expression matching correct function names. Overrides function- # naming-style. #function-rgx= # Good variable names which should always be accepted, separated by a comma.好的 变量命名 穷举,用逗号隔开 good-names=i, j, k, ex, Run, _ # Include a hint for the correct naming format with invalid-name. include-naming-hint=no # Naming style matching correct inline iteration names. inlinevar-naming-style=any # Regular expression matching correct inline iteration names. Overrides # inlinevar-naming-style. #inlinevar-rgx= # Naming style matching correct method names. method-naming-style=snake_case # Regular expression matching correct method names. Overrides method-naming- # style. #method-rgx= # Naming style matching correct module names. module-naming-style=snake_case # Regular expression matching correct module names. Overrides module-naming- # style. #module-rgx= # Colon-delimited sets of names that determine each other's naming style when # the name regexes allow several styles. name-group= # Regular expression which should only match function or class names that do # not require a docstring. 不需要文档注释的函数或类 的 匹配的正则;如下为 匹配除了以_开头 的 其他函数或类 no-docstring-rgx=^_ # List of decorators that produce properties, such as abc.abstractproperty. Add # to this list to register other decorators that produce valid properties. # These decorators are taken in consideration only for invalid-name. 不理解 property-classes=abc.abstractproperty # Naming style matching correct variable names. 变量命名风格 variable-naming-style=snake_case # Regular expression matching correct variable names. Overrides variable- # naming-style. 变量命名风格 正则匹配 覆盖上面的 本规则:不能有大写字母 variable-rgx=([^A-Z]+$) [FORMAT] # 格式的设置 # Expected format of line ending, e.g. empty (空字符), LF(换行) or CRLF(回车并换行). 行结束的预期格式; expected-line-ending-format= # Regexp for a line that is allowed to be longer than the limit. 运行超过行长度的 符合正则的 字符;如下为:注释的http或https请求 ignore-long-lines=^\s*(# )" " (4 spaces) or "\t" (1 # tab). 字符串缩进 indent-string=' ' # Maximum number of characters on a single line. 最大行字符长度 max-line-length=125 # Maximum number of lines in a module. 一个文件最大行数 max-module-lines=1000 # List of optional constructs for which whitespace checking is disabled. `dict- # separator` is used to allow tabulation in dicts, etc.: {1 : 1,\n222: 2}. # `trailing-comma` allows a space between comma and closing bracket: (a, ). # `empty-line` allows space-only lines. 没有空格的检查 no-space-check=trailing-comma, dict-separator # Allow the body of a class to be on the same line as the declaration if body # contains single statement. 允许类的主体与声明在同一行 single-line-class-stmt=no # Allow the body of an if to be on the same line as the test if there is no # else. 不理解 single-line-if-stmt=no [LOGGING] # Format style used to check logging format string. `old` means using % # formatting, while `new` is for `{}` formatting. 日志代码风格 old:'%s' % ('日志内容'); new: '{}'.format('日志内容') # 此方法 目前不支持 new的方式,禁用可在 disable 中 添加 logging-format-interpolation logging-format-style=new # Logging modules to check that the string format arguments are in logging # function parameter format. logging-modules=logging [MISCELLANEOUS] # List of note tags to take in consideration, separated by a comma.注释标签列表 notes=FIXME, XXX, TODO [SIMILARITIES] # 相似性 # Ignore comments when computing similarities. ignore-comments=yes # Ignore docstrings when computing similarities. ignore-docstrings=yes # Ignore imports when computing similarities. ignore-imports=no # Minimum lines number of a similarity. min-similarity-lines=4 [SPELLING] # Limits count of emitted suggestions for spelling mistakes.不理解 max-spelling-suggestions=4 # Spelling dictionary name. Available dictionaries: none. To make it working # install python-enchant package.. 拼写词典名字 spelling-dict= # List of comma separated words that should not be checked.拼写忽略的单词 spelling-ignore-words= # A path to a file that contains private dictionary; one word per line. spelling-private-dict-file= # Tells whether to store unknown words to indicated private dictionary in # --spelling-private-dict-file option instead of raising a message. spelling-store-unknown-words=no [STRING] # This flag controls whether the implicit-str-concat-in-sequence should # generate a warning on implicit string concatenation in sequences defined over # several lines.不理解 check-str-concat-over-line-jumps=no [TYPECHECK] # List of decorators that produce context managers, such as # contextlib.contextmanager. Add to this list to register other decorators that # produce valid context managers. contextmanager-decorators=contextlib.contextmanager # List of members which are set dynamically and missed by pylint inference # system, and so shouldn't trigger E1101 when accessed. Python regular # expressions are accepted. generated-members= # Tells whether missing members accessed in mixin class should be ignored. A # mixin class is detected if its name ends with "mixin" (case insensitive). ignore-mixin-members=yes # Tells whether to warn about missing members when the owner of the attribute # is inferred to be None. ignore-none=yes # This flag controls whether pylint should warn about no-member and similar # checks whenever an opaque object is returned when inferring. The inference # can return multiple potential results while evaluating a Python object, but # some branches might not be evaluated, which results in partial inference. In # that case, it might be useful to still emit no-member and other checks for # the rest of the inferred objects. ignore-on-opaque-inference=yes # List of class names for which member attributes should not be checked (useful # for classes with dynamically set attributes). This supports the use of # qualified names. ignored-classes=optparse.Values,thread._local,_thread._local # List of module names for which member attributes should not be checked # (useful for modules/projects where namespaces are manipulated during runtime # and thus existing member attributes cannot be deduced by static analysis. It # supports qualified module names, as well as Unix pattern matching. ignored-modules= # Show a hint with possible names when a member name was not found. The aspect # of finding the hint is based on edit distance. missing-member-hint=yes # The minimum edit distance a name should have in order to be considered a # similar match for a missing member name. missing-member-hint-distance=1 # The total number of similar names that should be taken in consideration when # showing a hint for a missing member. missing-member-max-choices=1 [VARIABLES] # List of additional names supposed to be defined in builtins. Remember that # you should avoid defining new builtins when possible. additional-builtins= # Tells whether unused global variables should be treated as a violation. allow-global-unused-variables=yes # List of strings which can identify a callback function by name. A callback # name must start or end with one of those strings. callbacks=cb_, _cb # A regular expression matching the name of dummy variables (i.e. expected to # not be used). dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+"BaseException, Exception". 捕获的异常包含 Exception,BaseException会被 警告显示,这里 去掉了 Exception(因为代码里基本都是这种异常) overgeneral-exceptions=BaseException, # 其他注释 #报错 详解 http://pylint.pycqa.org/en/latest/technical_reference/features.html # inconsistent-return-statements 当函数中 if 有return else 没有resturn
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