小编给大家分享一下python查看内置函数的方法，希望大家阅读完这篇文章后大所收获，下面让我们一起去探讨吧！

如何通过命令查看python中的所有内置函数和内置常量

举例python版本：

利用python中的语句输出python中的所有内置函数及内置常量名：

dir(__builtin__)

输出一个列表：

In[1]:dir(__builtin__)Out[1]:['ArithmeticError','AssertionError','AttributeError','BaseException','BlockingIOError','BrokenPipeError','BufferError','BytesWarning','ChildProcessError','ConnectionAbortedError','ConnectionError','ConnectionRefusedError','ConnectionResetError','DeprecationWarning','EOFError','Ellipsis','EnvironmentError','Exception','False','FileExistsError','FileNotFoundError','FloatingPointError','FutureWarning','GeneratorExit','IOError','ImportError','ImportWarning','IndentationError','IndexError','InterruptedError','IsADirectoryError','KeyError','KeyboardInterrupt','LookupError','MemoryError','ModuleNotFoundError','NameError','None','NotADirectoryError','NotImplemented','NotImplementedError','OSError','OverflowError','PendingDeprecationWarning','PermissionError','ProcessLookupError','RecursionError','ReferenceError','ResourceWarning','RuntimeError','RuntimeWarning','StopAsyncIteration','StopIteration','SyntaxError','SyntaxWarning','SystemError','SystemExit','TabError','TimeoutError','True','TypeError','UnboundLocalError','UnicodeDecodeError','UnicodeEncodeError','UnicodeError','UnicodeTranslateError','UnicodeWarning','UserWarning','ValueError','Warning','ZeroDivisionError','__IPYTHON__','__build_class__','__debug__','__doc__','__import__','__loader__','__name__','__package__','__spec__','abs','all','any','ascii','bin','bool','breakpoint','bytearray','bytes','callable','chr','classmethod','compile','complex','copyright','credits','delattr','dict','dir','display','divmod','enumerate','eval','exec','filter','float','format','frozenset','get_ipython','getattr','globals','hasattr','hash','help','hex','id','input','int','isinstance','issubclass','iter','len','license','list','locals','map','max','memoryview','min','next','object','oct','open','ord','pow','print','property','range','repr','reversed','round','set','setattr','slice','sorted','staticmethod','str','sum','super','tuple','type','vars','zip']

大写字母开头的是python的内置常量名，小写字母开头的是python的内置函数名。

进一步查看内置函数的用法可以：

#help(内置函数名)help(list)

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