零基础学python-14.3 python的文档资源：help函数

标签：python   文档   

python除了提供__doc__来查询文档字符串，还提供另外的一种方法来查询文档字符串：help

下面是我们自己建立的一个类，使用help打印，形成相关的报表信息

>>> class Test():
	'这是一个测试类'
	def helloworld():
		'测试方法'
		print('hello world')

		
>>> help(Test)
Help on class Test in module __main__:

class Test(builtins.object)
 |  这是一个测试类
 |  
 |  Methods defined here:
 |  
 |  helloworld()
 |      测试方法
 |  
 |  ----------------------------------------------------------------------
 |  Data descriptors defined here:
 |  
 |  __dict__
 |      dictionary for instance variables (if defined)
 |  
 |  __weakref__
 |      list of weak references to the object (if defined)

>>> 

>>> help('')

>>> help(str)
Help on class str in module builtins:

class str(object)
 |  str(object='') -> str
 |  str(bytes_or_buffer[, encoding[, errors]]) -> str
 |  

>>> help(''.upper )
Help on built-in function upper:

upper(...) method of builtins.str instance
    S.upper() -> str
    
    Return a copy of S converted to uppercase.

>>> help([].append )
Help on built-in function append:

append(...) method of builtins.list instance
    L.append(object) -> None -- append object to end

>>> 

>>> help(''.upper() )

>>> 

>>> help(''.replace )
Help on built-in function replace:

replace(...) method of builtins.str instance
    S.replace(old, new[, count]) -> str
    
    Return a copy of S with all occurrences of substring
    old replaced by new.  If the optional argument count is
    given, only the first count occurrences are replaced.

>>> 

总结，这一章节我们简单说明了help的使用

这一章节就说到这里，谢谢大家

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零基础学python-14.3 python的文档资源：help函数

标签：python   文档   

原文地址：http://blog.csdn.net/raylee2007/article/details/48338861