ascii()bin()breakpoint()callable()-Learn English in Python bultins 2018-10-4

def ascii(*args, **kwargs): # real signature unknown
    """
    Return an ASCII-only representation of an object.
    
    As repr(), return a string containing a printable representation of an
    object, but escape the non-ASCII characters in the string returned by
    repr() using \\x, \\u or \\U escapes. This generates a string similar
    to that returned by repr() in Python 2.
    """
    pass

def bin(*args, **kwargs): # real signature unknown; NOTE: unreliably restored from __doc__ 
    """
    Return the binary representation of an integer.
    
       >>> bin(2796202)
       '0b1010101010101010101010'
    """
    pass

def breakpoint(*args, **kws): # real signature unknown; restored from __doc__
    """
    breakpoint(*args, **kws)
    
    Call sys.breakpointhook(*args, **kws).  sys.breakpointhook() must accept
    whatever arguments are passed.
    
    By default, this drops you into the pdb debugger.
    """
    pass

def callable(i_e_, some_kind_of_function): # real signature unknown; restored from __doc__
    """
    Return whether the object is callable (i.e., some kind of function).
    
    Note that classes are callable, as are instances of classes with a
    __call__() method.
    """
    pass
    
    ```
目录（无链接）
1 representation , vote , containing 

2 escape

3 unreliable

4 binary

5 breakpoint

6 default

7 drops

8 debugger

9instances





1 representation
                [ 英  [,reprɪzen'teɪʃ(ə)n]   美  ['rɛprɪzɛn'teʃən]
                    n. 代表；表现；表示法；陈述]
                {when you have someone to speak, 
                    vote（使投票，选票）, or make decisions for you
                    代理，代表}
                <a string containing([kən'tenɪŋ]
                包含，容纳，克制,contain) a printable 
                representation of anobject？？？>


2 escape
            [ 英  [ɪ'skeɪp; e-]   美  [ɪˈskep]
            vt. 逃避，避开，避免；被忘掉；被忽视
            vi. 逃脱；避开；溜走；（气体，液体等）漏出；（未受伤或只受了一点伤害而）逃脱；声音（不自觉地）由…发出
            n. 逃跑；逃亡；逃走；逃跑工具或方法；野生种；泄漏]
            {to leave a place when someone is trying to catch you 
                or stop you, or when there is a dangerous 
                situation（情况）逃走，逃离}
            <escape the non-ASCII characters（字符） in the string
                避开字符串中的非ASCII字符，XXX除外 >

3 unreliable
            [英  [ʌnrɪ'laɪəb(ə)l]   美  [,ʌnrɪ'laɪəbl]
                adj. 不可靠的；靠不住的]
            {unable to be trusted(可信的) or depended on(依赖于，取决于)不可信赖的；不可靠的}
            <unreliably restored from __doc__ >

4 binary
            [ 英  ['baɪnərɪ]   美  ['baɪnəri]
              adj. [数] 二进制的；二元的，二态的]
            {the binary system
            a system of counting, used in computers, in which only the numbers 0 and 1 are used
            〔计算机运算系统〕二进制}
            <bin()把十进制数转成二进制表示，hex(),oct()>

5 breakpoint
            [['breikpɔint] 
                n. [计] 断点，断裂点]
            { an instruction([ɪn'strʌkʃən] n. 
            指令，命令；指示；教导；用法说明) inserted by a debug program causing a return to the debug program 断点指令; 调试程序中插入的指令，可使返回调试程序}
            <基本没用，用pycharm的debug调试就OK>

6 default
            [ 英  [dɪ'fɔːlt; 'diːfɔːlt]   美  [dɪ'fɔlt]
                vi. 拖欠；不履行；不到场
                n. 违约；缺席；缺乏；系统默认值
                vt. 不履行；不参加（比赛等）；对…处以缺席裁判]
            {by default
                if you win a game, competition etc by default, you win it because your opponent( [ə'ponənt]对手) did not play or because there were no other competitors(kəm'pɛtətɚ. 竞争者)
                因对手弃权[缺席]，因无其他参赛者〔而获胜〕
                if something happens by default, it happens because you did not do anything to change it
                由于没有采取行动}
            <by default 默认时……>

7 drops <=> drop
            [ 英  [drɒp]   美  [drɑp]
                vt. 滴；使降低；使终止；随口漏出
                vi. 下降；终止
                n. 滴；落下；空投；微量；滴剂]
            {to stop holding(持有，拥有) or carrying something so that it falls
            让〔某物〕落下}
            <drops you into 让你进入>


8 debugger
            [ 英  [diː'bʌgə]   美  [di:'bʌɡə]
            n. 调试器；[计] 调试程序]
            {Script Debugger 脚本调试程序
            Script Debugger 脚本调试器
            console debugger 控制台蝶程序
            Debugger Users 调试器用户
            Remote Debugger 远程调试器
            NetConnection Debugger 其还有调试模块
            POSTMORTEM DEBUGGER 如何设置验尸调试
            debugger compilation 调试程序编译
            Wake debugger 唤醒调试器
            portable debugger 可携除错器}
            <调试>

9instances <=> instance
            [ 英  ['ɪnst(ə)ns]   美  ['ɪnstəns]
            n. 实例；情况；建议
            vt. 举...为例]
            {an example of a particular kind of situation
            〔特定情况的〕例子，实例}
            <实例化--->对象obj>


函数理解
ascii() | repr() 和  eval(),前两个是将对象转成str--->‘[1,2]’|'5'|
                            '{1:!}' , eval()反过来。

```python
>>> ascii([1,2])
'[1, 2]'
>>> repr([1,2])
'[1, 2]'
>>> eval('1+1')
2

bin()是将十进制转成二进制，oct()十转8 , hex()十转16

>>> bin(10)
'0b1010'
>>> oct(10)
'0o12'
>>> hex(10)
'0xa'

callable()：查看是不是可调用，唤醒。返回True说明可以加（）调用

>>> callable(5)
False   #整数，浮点数不可被调用
>>> callable('5')
False   #字符串不可被调用
>>> callable([5])
False   #列表不可被调用
>>> callable(print)
True   #函数（内置，自定义）可被调用
>>> callable(str)
True   #str这是类可以被调用（实例化）