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N)r� r� rA r� r� r r r �popitem� s zMutableMapping.popitemc C s& z| � � qW n ty Y n0 dS )z,D.clear() -> None. Remove all items from D.N)r� r� r1 r r r r� � s zMutableMapping.clearc K s| t |t�r"|D ]}|| | |< qn<t|d�rH|�� D ]}|| | |< q4n|D ]\}}|| |< qL|�� D ]\}}|| |< qfdS )aK D.update([E, ]**F) -> None. Update D from mapping/iterable E and F.
If E present and has a .keys() method, does: for k in E: D[k] = E[k]
If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v
In either case, this is followed by: for k, v in F.items(): D[k] = v
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dd� Z d S )r z�All the operations on a read-only sequence.
Concrete subclasses must override __new__ or __init__,
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Raises ValueError if the value is not present.
Supporting start and stop arguments is optional, but
recommended.
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XXX Should add all their methods.
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dd� ZdS )r r c C s t �d S r r� �r2 r� rC r r r r� " s zMutableSequence.__setitem__c C s t �d S r r� r� r r r r� & s zMutableSequence.__delitem__c C s t �dS )z3S.insert(index, value) -- insert value before indexNr� r� r r r �insert* s zMutableSequence.insertc C s | � t| �|� dS )z:S.append(value) -- append value to the end of the sequenceN)r� rm rB r r r �append/ s zMutableSequence.appendc C s& z| � � qW n ty Y n0 dS )z,S.clear() -> None -- remove all items from SN)r� r� r1 r r r r� 3 s zMutableSequence.clearc C sH t | �}t|d �D ].}| || d | | | |< | || d < qdS )z!S.reverse() -- reverse *IN PLACE*rj r" N)rm r� )r2 r� r� r r r �reverse; s zMutableSequence.reversec C s( || u rt |�}|D ]}| �|� qdS )zMS.extend(iterable) -- extend sequence by appending elements from the iterableN)rn r� )r2 r� r� r r r �extendA s zMutableSequence.extendrz c C s | | }| |= |S )z�S.pop([index]) -> item -- remove and return item at index (default last).
Raise IndexError if list is empty or index is out of range.
r )r2 r� r� r r r r� H s zMutableSequence.popc C s | | � |�= dS )zvS.remove(value) -- remove first occurrence of value.
Raise ValueError if the value is not present.
N)r� rB r r r r� P s zMutableSequence.removec C s | � |� | S r )r� )r2 r� r r r �__iadd__V s
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