这句python代码的意思就是找tuple的class,再找它的基类,也就是object,再通过object找他的子类,具体的子类也如代码中的输出一样。从中可以看到了有file模块,zipimporter模块,是不是可以利用下呢?首先从file入手 假如用户如果构造: 1 2 3 4 5 6 7 8 9 10 11 12 >>> s1 = """ ... [ ... c for...
>>> eval('(lambda fc=(lambda n: [c 1="c" 2="in" 3="().__class__.__bases__[0" language="for"][/c].__subclasses__() if c.__name__ == n][0]):fc("function")(fc("code")(0,0,0,0,"KABOOM",(),(),(),"","",0,""),{})())()', {"__builtins__":None...
The eval() function evaluates the specified expression, if the expression is a legal Python statement, it will be executed.Syntaxeval(expression, globals, locals) Parameter ValuesParameterDescription expression A String, that will be evaluated as Python code globals Optional. A dictionary containing ...
``object_hook`` is an optional function that will be called with the result of any object literal decode (a ``dict``). The return value of ``object_hook`` will be used instead of the ``dict``. This feature can be used to implement custom decoders (e.g. JSON-RPC class hinting)...
When you call eval() with a string as an argument, the function returns the value that results from evaluating the input string. By default, eval() has access to global names like x in the above example.To evaluate a string-based expression, Python’s eval() runs the following steps:...
这个是个大function，不过里面comment都很简洁有用，起码可以很快理解这个是如何structure的一、概述在Pytho...
Seeast.literal_eval()for a function that can safely evaluate strings with expressions containing only literals. 下面我做一下简单的翻译,有可能有一些翻译不好的地方,见谅。 函数原型: eval(expression,globals=None,locals=None) 参数: expression:这个参数是一个字符串,python会使用globals字典和locals字典作为...
动态执行Python代码。也就是说exec可以执行复杂的Python代码,而不像eval函数那么样只能计算一个表达式的值。 函数定义: exec(object[, globals[, locals]]) 1. 参数说明: object:必选参数,表示需要被指定的Python代码。它必须是字符串或code对象。如果object是一个字符串,该字符串会先被解析为一组Python语句,然后...
can be used to implement custom decoders (e.g. JSON-RPC class hinting). ``object_pairs_hook`` is an optional function that will be called with the result of any object literal decoded with an ordered list of pairs. The return value of ``object_pairs_hook`` will be used instead of ...
(value)10>>>locals(){'__name__':'__main__','__doc__':None,'__package__':None,'__loader__':<class'_frozen_importlib.BuiltinImporter'>,'__spec__':None,'__annotations__':{},'__builtins__':<module'builtins'(built-in)>,'value':5,'double':<functiondouble at0x7f971d292...