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csv.cpython-310.pyc
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If there is no quotechar the delimiter can't be determined this way. )zI(?P<delim>[^\w\n"\'])(?P<space> ?)(?P<quote>["\']).*?(?P=quote)(?P=delim)zG(?:^|\n)(?P<quote>["\']).*?(?P=quote)(?P<delim>[^\w\n"\'])(?P<space> ?)zG(?P<delim>[^\w\n"\'])(?P<space> ?)(?P<quote>["\']).*?(?P=quote)(?:$|\n)z-(?:^|\n)(?P<quote>["\']).*?(?P=quote)(?:$|\n))r FNr r �quote� �delimN�space�rN r7 r z]((%(delim)s)|^)\W*%(quote)s[^%(delim)s\n]*%(quote)s[^%(delim)s\n]*%(quote)s\W*((%(delim)s)|$))rw ru TF) �re�compile�DOTALL� MULTILINE�findall� groupindexr` �KeyError�max�escape�search)r �datars �matches�restr�regexp�quotes�delims�spacesr �m�nrN r+ rw r. � dq_regexpr- r r r rp � sj � � �� ��� z"Sniffer._guess_quote_and_delimiterc C s t td|�d���}dd� td�D �}tdt|��}d}i }i }i }d|} } | t|�k �r-|d7 }|| | � D ] } |D ]} |�| i �} | �| �}| �|d�d | |< | || < q<q8|�� D ]N} t || � � �}t|�dkrv|d d dkrvq]t|�dkr�t |d d � d �|| < |� || � || d || d t d d � |D �� f|| < q]|d || < q]|� � }t t|| t|���}d}d}t|�dkr�||kr�|D ]$\}}|d dkr�|d dkr�|d | |kr�|du s�||v r�|||< q�|d8 }t|�dkr�||ks�t|�dk�r!t |�� �d }|d �|�|d �d| �k}||fS | } | |7 } | t|�k s.|�s2dS t|�dk�r]| jD ] }||�� v �r[|d �|�|d �d| �k}||f S �q<dd� |� � D �}|�� |d d }|d �|�|d �d| �k}||fS )a� The delimiter /should/ occur the same number of times on each row. 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