做网站找那家公司好,进一步优化,校园门户网站建设项目技术支持,建网站需要的设备inspect模块主要提供了四种用处#xff1a;
1.对是否是模块、框架、函数进行类型检查
2.获取源码
3.获取类或者函数的参数信息
4.解析堆栈
一、type and members
1. inspect.getmembers(object[, predicate])
第二个参数通常可以根据需要调用如下16个方法#xff1b;
返回值为…inspect模块主要提供了四种用处
1.对是否是模块、框架、函数进行类型检查
2.获取源码
3.获取类或者函数的参数信息
4.解析堆栈
一、type and members
1. inspect.getmembers(object[, predicate])
第二个参数通常可以根据需要调用如下16个方法
返回值为object的所有成员以name,value对组成的列表
inspect.ismodule(object) 是否为模块
inspect.isclass(object)是否为类
inspect.ismethod(object)是否为方法bound method written in python
inspect.isfunction(object)是否为函数(python function, including lambda expression)
inspect.isgeneratorfunction(object)是否为python生成器函数
inspect.isgenerator(object):是否为生成器
inspect.istraceback(object) 是否为traceback
inspect.isframe(object)是否为frame
inspect.iscode(object)是否为code
inspect.isbuiltin(object)是否为built-in函数或built-in方法
inspect.isroutine(object)是否为用户自定义或者built-in函数或方法
inspect.isabstract(object)是否为抽象基类
inspect.ismethoddescriptor(object)是否为方法标识符
inspect.isdatadescriptor(object)是否为数字标识符数字标识符有__get__ 和__set__属性 通常也有__name__和__doc__属性
inspect.isgetsetdescriptor(object)是否为getset descriptor
inspect.ismemberdescriptor(object)是否为member descriptor
inspect的getmembers()方法可以获取对象module、class、method等的如下属性
TypeAttributeDescriptionNotes
module
__doc__
documentation string
__file__
filename (missing for built-in modules)
class
__doc__
documentation string
__module__
name of module in which this class was defined
method
__doc__
documentation string
__name__
name with which this method was defined
im_class
class object that asked for this method
(1)
im_func or __func__
function object containing implementation of method
im_self or __self__
instance to which this method is bound, or None
function
__doc__
documentation string
__name__
name with which this function was defined
func_code
code object containing compiled function bytecode
func_defaults
tuple of any default values for arguments
func_doc
(same as __doc__)
func_globals
global namespace in which this function was defined
func_name
(same as __name__)
generator
__iter__
defined to support iteration over container
close
raises new GeneratorExit exception inside the generator to terminate the iteration
gi_code
code object
gi_frame
frame object or possibly None once the generator has been exhausted
gi_running
set to 1 when generator is executing, 0 otherwise
next
return the next item from the container
send
resumes the generator and “sends” a value that becomes the result of the current yield-expression
throw
used to raise an exception inside the generator
traceback
tb_frame
frame object at this level
tb_lasti
index of last attempted instruction in bytecode
tb_lineno
current line number in Python source code
tb_next
next inner traceback object (called by this level)
frame
f_back
next outer frame object (this frame’s caller)
f_builtins
builtins namespace seen by this frame
f_code
code object being executed in this frame
f_exc_traceback
traceback if raised in this frame, or None
f_exc_type
exception type if raised in this frame, or None
f_exc_value
exception value if raised in this frame, or None
f_globals
global namespace seen by this frame
f_lasti
index of last attempted instruction in bytecode
f_lineno
current line number in Python source code
f_locals
local namespace seen by this frame
f_restricted
0 or 1 if frame is in restricted execution mode
f_trace
tracing function for this frame, or None
code
co_argcount
number of arguments (not including * or ** args)
co_code
string of raw compiled bytecode
co_consts
tuple of constants used in the bytecode
co_filename
name of file in which this code object was created
co_firstlineno
number of first line in Python source code
co_flags
bitmap: 1optimized | 2newlocals | 4*arg |8**arg
co_lnotab
encoded mapping of line numbers to bytecode indices
co_name
name with which this code object was defined
co_names
tuple of names of local variables
co_nlocals
number of local variables
co_stacksize
virtual machine stack space required
co_varnames
tuple of names of arguments and local variables
builtin
__doc__
documentation string
__name__
original name of this function or method
__self__
instance to which a method is bound, or None
2. inspect.getmoduleinfo(path) 返回一个命名元组(name, suffix, mode, module_type)
name模块名不包括其所在的package
suffix
modeopen()方法的模式如r, a等
module_type: 整数代表了模块的类型
3. inspect.getmodulename(path)根据path返回模块名不包括其所在的package
二、Retrieving source code
1. inspect.getdoc(object) 获取object的documentation信息
2. inspect.getcomments(object)
3. inspect.getfile(object): 返回对象的文件名
4. inspect.getmodule(object)返回object所属的模块名
5. inspect.getsourcefile(object) 返回object的python源文件名object不能使built-in的module, class, mothod
6. inspect.getsourcelines(object)返回object的python源文件代码的内容行号代码行
7. inspect.getsource(object)以string形式返回object的源代码
8. inspect.cleandoc(doc)
三、class and functions
1. inspect.getclasstree(classes[, unique])
2. inspect.getargspec(func)
3. inspect.getargvalues(frame)
4. inspect.formatargspec(args[, varargs, varkw, defaults, formatarg, formatvarargs, formatvarkw, formatvalue, join])
5. inspect.formatargvalues(args[, varargs, varkw, locals, formatarg, formatvarargs, formatvarkw, formatvalue, join])
6. inspect.getmro(cls) 元组形式返回cls类的基类包括cls类以method resolution顺序;通常cls类为元素的第一个元素
7. inspect.getcallargs(func[, *args][, **kwds])将args和kwds参数到绑定到为func的参数名对bound方法也绑定第一个参数通常为self到相应的实例返回字典对应参数名及其值from inspect import getcallargsdef f(a, b1, *pos, **named):
... passgetcallargs(f, 1, 2, 3)
{a: 1, named: {}, b: 2, pos: (3,)}getcallargs(f, a2, x4)
{a: 2, named: {x: 4}, b: 1, pos: ()}getcallargs(f)
Traceback (most recent call last):
...
TypeError: f() takes at least 1 argument (0 given)
四、The interpreter stack
1. inspect.getframeinfo(frame[, context])
2. inspect.getouterframes(frame[, context])
3. inspect.getinnerframes(traceback[, context])
4. inspect.currentframe()
5. inspect.stack([context])
6. inspect.trace([context])
