阅读终端中的Python文档？

Question

有没有办法来安装python文档，使它可以像它是一个联机帮助？ （我知道你可以下载文件的源文件，并在vim中阅读它们，使用更少或者其他方式，但是我正在考虑少量手动操作。不想自己滚动。）

Answer 1

在Debian（和派生的发行版，如Ubuntu）上安装pydoc包。然后你可以使用pydoc whatever命令。

Answer 2

我不如果这是你想要的，但是你可以在IDLE中做的所有事情，你可以在命令行上执行。例如：

C:>python 
>>help(print()) 
>>help(plt.plot()) 

这样你就可以访问文档

Answer 3

我不知道这是你正在寻找什么，但Python交互式控制台提供help命令。您可以按照以下方式使用它。

>>> help() 

Welcome to Python 3.6's help utility! 

If this is your first time using Python, you should definitely check out 
the tutorial on the Internet at http://docs.python.org/3.6/tutorial/. 

Enter the name of any module, keyword, or topic to get help on writing 
Python programs and using Python modules. To quit this help utility and 
return to the interpreter, just type "quit". 

To get a list of available modules, keywords, symbols, or topics, type 
"modules", "keywords", "symbols", or "topics". Each module also comes 
with a one-line summary of what it does; to list the modules whose name 
or summary contain a given string such as "spam", type "modules spam". 

help> list 

这将输出所有list方法的全部文档。

Answer 4

这不是文档的确切副本，但有内置的help() function。

在交互式的Python会话，你刚才叫help(whatever_you_want_to_read_about)，例如：

>>> help(all) 
Help on built-in function all in module builtins: 

all(...) 
    all(iterable) -> bool 

    Return True if bool(x) is True for all values x in the iterable. 
    If the iterable is empty, return True. 

---

或者，您也可以启动一个交互式帮助会话是这样的：

C:\Users\Rawing>python -c "help()" 

Welcome to Python 3.4! This is the interactive help utility. 

help> 

然后就是键入你想知道的功能/类/模块：

help> all 
Help on built-in function all in module builtins: 

all(...) 
    all(iterable) -> bool 

    Return True if bool(x) is True for all values x in the iterable. 
    If the iterable is empty, return True. 

Answer 5

您可以使用help(Class-name/method-name/anything)。而且采用__doc__

特殊__doc__文档字符串连接到每一个类和方法。例如，看看我输入我的翻译。

>>> print(str.__doc__) 
str(object='') -> str 
str(bytes_or_buffer[, encoding[, errors]]) -> str 

Create a new string object from the given object. If encoding or 
errors is specified, then the object must expose a data buffer 
that will be decoded using the given encoding and error handler. 
Otherwise, returns the result of object.__str__() (if defined) 
or repr(object). 
encoding defaults to sys.getdefaultencoding(). 
errors defaults to 'strict'. 
>>> print(int.__doc__) 
int(x=0) -> integer 
int(x, base=10) -> integer 

Convert a number or string to an integer, or return 0 if no arguments 
are given. If x is a number, return x.__int__(). For floating point 
numbers, this truncates towards zero. 

If x is not a number or if base is given, then x must be a string, 
bytes, or bytearray instance representing an integer literal in the 
given base. The literal can be preceded by '+' or '-' and be surrounded 
by whitespace. The base defaults to 10. Valid bases are 0 and 2-36. 
Base 0 means to interpret the base from the string as an integer literal. 
>>> int('0b100', base=0) 
4 

它甚至适用于模块。

>>> import math 
>>> math.__doc__ 
'This module is always available. It provides access to the\nmathematical functions defined by the C standard.' 
>>> math.ceil.__doc__ 
'ceil(x)\n\nReturn the ceiling of x as an Integral.\nThis is the smallest integer >= x.' 
>>> 

因为每个类都有一个__doc__这是附加给它的文档字符串你可以使用CLASS_NAME .__ doc__会给出

>>> print(ord.__doc__) 
Return the Unicode code point for a one-character string.