Question

我尝试通过以下步骤检索内置类型

首先，使用＆＃39; set＆＃39;

检索builtins中的所有类型

total_builtins = dir(__builtins__)
total_types = {type(eval(i)) for i in total_builtins}
In [95]: total_types
Out[95]:
{NoneType,
 NotImplementedType,
 _sitebuiltins._Helper,
 _sitebuiltins._Printer,
 bool,
 builtin_function_or_method,
 ellipsis,
 function,
 method,
 str,
 type}
#Subtract type of 'type'
total_types = total_types.pop()
In [120]: len(total_types)
Out[120]: 10

第二组他们使用dict，

In [117]: {mytype:[i for i in total_bins if isinstance(eval(i), mytype)] 
          for mytype in total_types}
Out[117]:
{NoneType: ['None', '__loader__', '__package__', '__spec__'],
 NotImplementedType: ['NotImplemented'],
 _sitebuiltins._Helper: ['help'],
 _sitebuiltins._Printer: ['copyright', 'credits', 'license'],
 bool: ['False', 'True', '__IPYTHON__', '__debug__'],
 builtin_function_or_method: ['__build_class__',
  '__import__',
 ....],
 ellipsis: ['Ellipsis'],
 function: ['display'],
 method: ['get_ipython'],
 str: ['__doc__', '__name__']}

这确实产生了预期的结果，但对于任务来说看起来有点过分（尤其是多重嵌套的理解）。

如何以聪明的方式解决这个问题？

Answer 1

IIUC，你可以迭代= link_to '#', aria_label: "Change Icon", class: 'btn btn-info', id: 'icon-button' do %i{class: icon, id: 'icon-button', data: {icon: icon}} %span.sr-only Change Icon。虽然，你仍然需要在之后反转字典。

private void turnOnScreen() {
    PowerManager.WakeLock screenLock = null;
    if ((getSystemService(POWER_SERVICE)) != null) {
        screenLock = ((PowerManager)getSystemService(POWER_SERVICE)).newWakeLock(
                PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "TAG");
        screenLock.acquire(10*60*1000L /*10 minutes*/);


        screenLock.release();
    }
}

使用__builtins__.__dict__ -

的类似解决方案

d = {k : type(v) for k, v in builtins.__dict__.items()}

d2 = {}
for k, v in d.items():
    d2.setdefault(v, []).append(k)

这比第一个解决方案更有效。

检索内置版＆＃39;分别按他们的类型

1 个答案: