0.8.19

Usage for: checker.py [options] PACKAGE ... PACKAGEs can be a python package, module or filename Long options can be preceded with no- to turn off (e.g., no-namedargs) Category Options: Change warning for ... [default value] Major Options: --only only warn about files passed on the command line [off] -e, --level the maximum error level of warnings to be displayed -#, --limit the maximum number of warnings to be displayed [10] -F, --config specify .pycheckrc file to use --quixote support Quixote's PTL modules --evil list of evil C extensions that crash the interpreter [[]] --keepgoing ignore import errors [off] Error Control: -i, --import unused imports [on] -k, --pkgimport unused imports from __init__.py [on] -M, --reimportself module imports itself [on] -X, --reimport reimporting a module [on] -x, --miximport module does import and from ... import [on] -l, --local unused local variables, except tuples [on] -t, --tuple all unused local variables, including tuples [off] -9, --members all unused class data members [off] -v, --var all unused module variables [off] -p, --privatevar unused private module variables [on] -g, --allglobals report each occurrence of global warnings [off] -n, --namedargs functions called with named arguments (like keywords) [off] -a, --initattr Attributes (members) must be defined in __init__() [off] -I, --initsubclass Subclass.__init__() not defined [off] -u, --callinit Baseclass.__init__() not called [on] -0, --abstract Subclass needs to override methods that only throw exceptions [on] -N, --initreturn Return None from __init__() [on] -8, --unreachable unreachable code [off] -2, --constCond a constant is used in a conditional statement [on] -1, --constant1 1 is used in a conditional statement (if 1: or while 1:) [off] --stringiter check if iterating over a string [on] --stringfind check improper use of string.find() [on] -A, --callattr Calling data members as functions [off] -y, --classattr class attribute does not exist [on] -S, --self First argument to methods [self] --classmethodargs First argument to classmethods [['cls', 'klass']] -T, --argsused unused method/function arguments [on] -z, --varargsused unused method/function variable arguments [on] -G, --selfused ignore if self is unused in methods [off] -o, --override check if overridden methods have the same signature [on] --special check if __special__ methods exist and have the correct signature [on] -U, --reuseattr check if function/class/method names are reused [on] -Y, --positive check if using unary positive (+) which is usually meaningless [on] -j, --moddefvalue check if modify (call method) on a parameter that has a default value [on] --changetypes check if variables are set to different types [off] --unpack check if unpacking a non-sequence [on] --unpacklen check if unpacking sequence with the wrong length [on] --badexcept check if raising or catching bad exceptions [on] -4, --noeffect check if statement appears to have no effect [on] --modulo1 check if using (expr % 1), it has no effect on integers and strings [on] --isliteral check if using (expr is const-literal), doesn't always work on integers and strings [on] --constattr check if a constant string is passed to getattr()/setattr() [on] Possible Errors: -r, --returnvalues check consistent return values [on] -C, --implicitreturns check if using implict and explicit return values [on] -O, --objattrs check that attributes of objects exist [on] -7, --slots various warnings about incorrect usage of __slots__ [on] -3, --properties using properties with classic classes [on] --emptyslots check if __slots__ is empty [on] -D, --intdivide check if using integer division [on] -w, --shadow check if local variable shadows a global [on] -s, --shadowbuiltin check if a variable shadows a builtin [on] Security: --input check if input() is used [on] -6, --exec check if the exec statement is used [off] Suppressions: -q, --stdlib ignore warnings from files under standard library [off] -b, --blacklist ignore warnings from the list of modules [['Tkinter', 'wxPython', 'gtk', 'GTK', 'GDK']] -Z, --varlist ignore global variables not used if name is one of these values [['__version__', '__warningregistry__', '__all__', '__credits__', '__test__', '__author__', '__email__', '__revision__', '__id__', '__copyright__', '__license__', '__date__']] -E, --unusednames ignore unused locals/arguments if name is one of these values [['_', 'empty', 'unused', 'dummy']] --missingattrs ignore missing class attributes if name is one of these values [[]] --deprecated ignore use of deprecated modules/functions [on] Complexity: -L, --maxlines maximum lines in a function [200] -B, --maxbranches maximum branches in a function [50] -R, --maxreturns maximum returns in a function [10] -J, --maxargs maximum # of arguments to a function [10] -K, --maxlocals maximum # of locals in a function [40] -5, --maxrefs maximum # of identifier references (Law of Demeter) [5] -m, --moduledoc no module doc strings [off] -c, --classdoc no class doc strings [off] -f, --funcdoc no function/method doc strings [off] Debug: --rcfile print a .pycheckrc file generated from command line args -P, --printparse print internal checker parse structures [off] -d, --debug turn on debugging for checker [off] --findevil print each class object to find one that crashes [off] -Q, --quiet turn off all output except warnings [off] -V, --version print the version of PyChecker and exit