自带帮助文档：
>>> help(list)
Help on class list in module builtins: class list(object)
| list() -> new empty list
| list(iterable) -> new list initialized from iterable's items
|
| Methods defined here:
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| __add__(self, value, /)
| Return self+value.
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| __contains__(self, key, /)
| Return key in self.
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| __delitem__(self, key, /)
| Delete self[key].
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| __eq__(self, value, /)
| Return self==value.
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| __ge__(self, value, /)
| Return self>=value.
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| __getattribute__(self, name, /)
| Return getattr(self, name).
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| __getitem__(...)
| x.__getitem__(y) <==> x[y]
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| __gt__(self, value, /)
| Return self>value.
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| __iadd__(self, value, /)
| Implement self+=value.
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| __imul__(self, value, /)
| Implement self*=value.
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| __init__(self, /, *args, **kwargs)
| Initialize self. See help(type(self)) for accurate signature.
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| __iter__(self, /)
| Implement iter(self).
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| __le__(self, value, /)
| Return self<=value.
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| __len__(self, /)
| Return len(self).
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| __lt__(self, value, /)
| Return self<value.
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| __mul__(self, value, /)
| Return self*value.n
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| __ne__(self, value, /)
| Return self!=value.
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| __new__(*args, **kwargs) from builtins.type
| Create and return a new object. See help(type) for accurate signature.
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| __repr__(self, /)
| Return repr(self).
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| __reversed__(...)
| L.__reversed__() -- return a reverse iterator over the list
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| __rmul__(self, value, /)
| Return self*value.
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| __setitem__(self, key, value, /)
| Set self[key] to value.
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| __sizeof__(...)
| L.__sizeof__() -- size of L in memory, in bytes
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| append(...)
| L.append(object) -> None -- append object to end
|
| clear(...)
| L.clear() -> None -- remove all items from L
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| copy(...)
| L.copy() -> list -- a shallow copy of L
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| count(...)
| L.count(value) -> integer -- return number of occurrences of value
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| extend(...)
| L.extend(iterable) -> None -- extend list by appending elements from the iterable
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| index(...)
| L.index(value, [start, [stop]]) -> integer -- return first index of value.
| Raises ValueError if the value is not present.
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| insert(...)
| L.insert(index, object) -- insert object before index
|
| pop(...)
| L.pop([index]) -> item -- remove and return item at index (default last).
| Raises IndexError if list is empty or index is out of range.
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| remove(...)
| L.remove(value) -> None -- remove first occurrence of value.
| Raises ValueError if the value is not present.
|
| reverse(...)
| L.reverse() -- reverse *IN PLACE*
|
| sort(...)
| L.sort(key=None, reverse=False) -> None -- stable sort *IN PLACE*
|
| ----------------------------------------------------------------------
| Data and other attributes defined here:
|
| __hash__ = None >>>