常用内置函数及用法: 1. callable() def callable(i_e_, some_kind_of_function): # real signature unknown; restored from __doc__ """检查对象object是否可调用.如果返回True,object仍然可能调用失败:但如果返回False,调用对象ojbect绝对不会成功 Return whether the object is callable (i.e., some kin…
一.内置函数 1.***eval:执行字符串类型的代码,并返回最终结果(去掉括号里面是什么就返回什么). print(eval('3+4')) #7 ret = eval('{"name":"laonanhai"}') print(ret,type(ret)) #{'name': 'laonanhai'} 2.***exec:执行字符串类型的代码,流程语句(没有返回值,打印执行过程). ret1=''' li= [1,2,3] for i in li: print(…
python内置函数 # encoding: utf-8 # module builtins # from (built-in) # by generator 1.145 """ Built-in functions, exceptions, and other objects. Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices. """ # no…