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Valid attributes are: delimiter, quotechar, escapechar, doublequote, skipinitialspace, lineterminator, quoting. u c C s) | j t k r d | _ n | j � d S( NT( u __class__u Dialectu Trueu _validu _validate( u self( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu __init__) s u Dialect.__init__c C sL y t | � Wn7 t k rG } z t t | � � � WYd d } ~ Xn Xd S( N( u _Dialectu TypeErroru Erroru str( u selfu e( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu _validate. s u Dialect._validateNF( u __name__u __module__u __qualname__u __doc__u _nameu Falseu _validu Noneu delimiteru quotecharu escapecharu doublequoteu skipinitialspaceu lineterminatoru quotingu __init__u _validate( u __locals__( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu Dialect s c B s> | Ee Z d Z d Z d Z d Z d Z d Z d Z e Z d S( u excelu; Describe the usual properties of Excel-generated CSV files.u ,u "u NTF( u __name__u __module__u __qualname__u __doc__u delimiteru quotecharu Trueu doublequoteu Falseu skipinitialspaceu lineterminatoru QUOTE_MINIMALu quoting( u __locals__( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu excel5 s c B s | Ee Z d Z d Z d Z d S( u excel_tabuE Describe the usual properties of Excel-generated TAB-delimited files.u N( u __name__u __module__u __qualname__u __doc__u delimiter( u __locals__( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu excel_tab? s u excel-tabc B s> | Ee Z d Z d Z d Z d Z d Z d Z d Z e Z d S( u unix_dialectu: Describe the usual properties of Unix-generated CSV files.u ,u "u NTF( u __name__u __module__u __qualname__u __doc__u delimiteru quotecharu Trueu doublequoteu Falseu skipinitialspaceu lineterminatoru QUOTE_ALLu quoting( u __locals__( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu unix_dialectD s u unix_dialectu unixc B sk | Ee Z d Z d d d d d d � Z d d � Z e d d � � Z e j d d � � Z d d � Z d S( u DictReaderu excelc O sI | | _ | | _ | | _ t | | | | � | _ | | _ d | _ d S( Ni ( u _fieldnamesu restkeyu restvalu readeru dialectu line_num( u selfu fu fieldnamesu restkeyu restvalu dialectu argsu kwds( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu __init__P s u DictReader.__init__c C s | S( N( ( u self( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu __iter__Y s u DictReader.__iter__c C sS | j d k r= y t | j � | _ Wq= t k r9 Yq= Xn | j j | _ | j S( N( u _fieldnamesu Noneu nextu readeru StopIterationu line_num( u self( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu fieldnames\ s u DictReader.fieldnamesc C s | | _ d S( N( u _fieldnames( u selfu value( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu fieldnamesf s c C s� | j d k r | j n t | j � } | j j | _ x | g k rX t | j � } q: Wt t | j | � � } t | j � } t | � } | | k r� | | d � | | j <n: | | k r� x+ | j | d � D] } | j | | <q� Wn | S( Ni ( u line_numu fieldnamesu nextu readeru dictu zipu lenu restkeyu restval( u selfu rowu du lfu lru key( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu __next__j s u DictReader.__next__N( u __name__u __module__u __qualname__u Noneu __init__u __iter__u propertyu fieldnamesu setteru __next__( u __locals__( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu DictReaderO s c B sY | Ee Z d Z d d d d d � Z d d � Z d d � Z d d � Z d d � Z d S( u DictWriteru u raiseu excelc O s\ | | _ | | _ | j � d k r7 t d | � � n | | _ t | | | | � | _ d S( Nu raiseu ignoreu- extrasaction (%s) must be 'raise' or 'ignore'( u raiseu ignore( u fieldnamesu restvalu loweru ValueErroru extrasactionu writer( u selfu fu fieldnamesu restvalu extrasactionu dialectu argsu kwds( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu __init__� s u DictWriter.__init__c C s, t t | j | j � � } | j | � d S( N( u dictu zipu fieldnamesu writerow( u selfu header( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu writeheader� s u DictWriter.writeheaderc sw � j d k rZ � f d d � � D� } | rZ t d d j d d � | D� � � � qZ n � � f d d � � j D� S( Nu raisec s% g | ] } | � j k r | � q S( ( u fieldnames( u .0u k( u self( u( /opt/alt/python33/lib64/python3.3/csv.pyu <listcomp>� s u, DictWriter._dict_to_list.<locals>.<listcomp>u( dict contains fields not in fieldnames: u , c S s g | ] } t | � � q S( ( u repr( u .0u x( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu <listcomp>� s c s% g | ] } � j | � j � � q S( ( u getu restval( u .0u key( u rowdictu self( u( /opt/alt/python33/lib64/python3.3/csv.pyu <listcomp>� s ( u extrasactionu ValueErroru joinu fieldnames( u selfu rowdictu wrong_fields( ( u rowdictu selfu( /opt/alt/python33/lib64/python3.3/csv.pyu _dict_to_list� s &u DictWriter._dict_to_listc C s | j j | j | � � S( N( u writeru writerowu _dict_to_list( u selfu rowdict( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu writerow� s u DictWriter.writerowc C s= g } x$ | D] } | j | j | � � q W| j j | � S( N( u appendu _dict_to_listu writeru writerows( u selfu rowdictsu rowsu rowdict( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu writerows� s u DictWriter.writerowsN( u __name__u __module__u __qualname__u __init__u writeheaderu _dict_to_listu writerowu writerows( u __locals__( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu DictWriter� s c B sY | Ee Z d Z d Z d d � Z d d d � Z d d � Z d d � Z d d � Z d S( u Snifferue "Sniffs" the format of a CSV file (i.e. delimiter, quotechar) Returns a Dialect object. c C s d d d d d g | _ d S( Nu ,u u ;u u :( u preferred( u self( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu __init__� s u Sniffer.__init__c C s� | j | | � \ } } } } | s? | j | | � \ } } n | sT t d � � n Gd d � d t � } | | _ | | _ | p� d | _ | | _ | S( uI Returns a dialect (or None) corresponding to the sample u Could not determine delimiterc B s& | Ee Z d Z d Z d Z e Z d S( u Sniffer.sniff.<locals>.dialectu sniffedu N( u __name__u __module__u __qualname__u _nameu lineterminatoru QUOTE_MINIMALu quoting( u __locals__( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu dialect� s u dialectu "( u _guess_quote_and_delimiteru _guess_delimiteru Erroru Dialectu doublequoteu delimiteru quotecharu skipinitialspace( u selfu sampleu delimitersu quotecharu doublequoteu delimiteru skipinitialspaceu dialect( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu sniff� s u Sniffer.sniffc C s/ g } xC d D]; } t j | t j t j B� } | j | � } | r Pq q W| sV d Si } i } d } x| D]� } | j d d } | | } | r� | j | d � d | | <n y | j d d } | | } Wn t k r� wo Yn X| r%| d k s| | k r%| j | d � d | | <n y | j d d } Wn t k rQwo Yn X| | ro | d 7} qo qo Wt | d | j �} | r�t | d | j �} | | | k } | d k r�d } q�n d } d } t j d i t j | � d 6| d 6t j � } | j | � rd } n d } | | | | f S( u� Looks for text enclosed between two identical quotes (the probable quotechar) which are preceded and followed by the same character (the probable delimiter). For example: ,'some text', The quote with the most wins, same with the delimiter. If there is no quotechar the delimiter can't be determined this way. uF (?P<delim>[^\w "'])(?P<space> ?)(?P<quote>["']).*?(?P=quote)(?P=delim)uC (?:^| )(?P<quote>["']).*?(?P=quote)(?P<delim>[^\w "'])(?P<space> ?)uD (?P<delim>>[^\w "'])(?P<space> ?)(?P<quote>["']).*?(?P=quote)(?:$| )u* (?:^| )(?P<quote>["']).*?(?P=quote)(?:$| )u i u quotei u delimu spaceu keyu u] ((%(delim)s)|^)\W*%(quote)s[^%(delim)s\n]*%(quote)s[^%(delim)s\n]*%(quote)s\W*((%(delim)s)|$)( uF (?P<delim>[^\w "'])(?P<space> ?)(?P<quote>["']).*?(?P=quote)(?P=delim)uC (?:^| )(?P<quote>["']).*?(?P=quote)(?P<delim>[^\w "'])(?P<space> ?)uD (?P<delim>>[^\w "'])(?P<space> ?)(?P<quote>["']).*?(?P=quote)(?:$| )u* (?:^| )(?P<quote>["']).*?(?P=quote)(?:$| )FN( u FNi T( u reu compileu DOTALLu MULTILINEu findallu Falseu Noneu groupindexu getu KeyErroru maxu escapeu searchu True( u selfu datau delimitersu matchesu restru regexpu quotesu delimsu spacesu mu nu keyu quotecharu delimu skipinitialspaceu dq_regexpu doublequote( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu _guess_quote_and_delimiter� s^ ' u" Sniffer._guess_quote_and_delimiterc C s t t d | j d � � � } d d � t d � D� } t d t | � � } d } i } i } i } d t | t | � � } } x�| t | � k r)| d 7} xn | | | � D]\ } xS | D]K } | j | i � } | j | � } | j | d � d | | <| | | <q� Wq� Wx� | j � D]� } t | | j � � } t | � d k re| d d d k req n t | � d k r�t | d d d � �| | <| j | | � | | d | | d t d d � | D� � f | | <q | d | | <q W| j � } t | | � } d } d } x� t | � d k r�| | k r�xp | D]h \ } } | d d k r@| d d k r@| d | | k r�| d k s�| | k r�| | | <q�q@q@W| d 8} qWt | � d k rt | j � � d } | d j | � | d j d | � k } | | f S| } | | 7} q� W| s4d St | � d k r�xZ | j D]L } | | j � k rP| d j | � | d j d | � k } | | f SqPWn d d � | j � D� } | j � | d d } | d j | � | d j d | � k } | | f S( u� The delimiter /should/ occur the same number of times on each row. However, due to malformed data, it may not. We don't want an all or nothing approach, so we allow for small variations in this number. 1) build a table of the frequency of each character on every line. 2) build a table of frequencies of this frequency (meta-frequency?), e.g. 'x occurred 5 times in 10 rows, 6 times in 1000 rows, 7 times in 2 rows' 3) use the mode of the meta-frequency to determine the /expected/ frequency for that character 4) find out how often the character actually meets that goal 5) the character that best meets its goal is the delimiter For performance reasons, the data is evaluated in chunks, so it can try and evaluate the smallest portion of the data possible, evaluating additional chunks as necessary. u c S s g | ] } t | � � q S( ( u chr( u .0u c( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu <listcomp>. s u, Sniffer._guess_delimiter.<locals>.<listcomp>i i i i u keyc S s | d S( Ni ( ( u x( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu <lambda>H s u* Sniffer._guess_delimiter.<locals>.<lambda>c s s | ] } | d Vq d S( i N( ( u .0u item( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu <genexpr>M s u+ Sniffer._guess_delimiter.<locals>.<genexpr>g �?g�������?g{�G�z�?u %c u c S s" g | ] \ } } | | f � q S( ( ( u .0u ku v( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu <listcomp>w s N( u i i����( u listu filteru Noneu splitu rangeu minu lenu getu countu keysu itemsu maxu removeu sumu floatu preferredu sort( u selfu datau delimitersu asciiu chunkLengthu iterationu charFrequencyu modesu delimsu startu endu lineu charu metaFrequencyu frequ itemsu modeListu totalu consistencyu thresholdu ku vu delimu skipinitialspaceu d( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu _guess_delimiter st & $ ! u Sniffer._guess_delimiterc C s t t | � | j | � � } t | � } t | � } i } x t | � D] } d | | <qI Wd } x� | D]� } | d k r� Pn | d 7} t | � | k r� qj n x� t | j � � D]� } xU t t t g D]4 } y | | | � PWq� t t f k r� Yq� Xq� Wt | | � } | | | k r� | | d k r@| | | <qJ| | =q� q� Wqj Wd } x� | j � D]� \ } } t | � t d � k r�t | | � | k r�| d 7} q�| d 8} qey | | | � Wn" t t f k r�| d 7} YqeX| d 8} qeW| d k S( Ni i i ( u readeru StringIOu sniffu nextu lenu rangeu Noneu listu keysu intu floatu complexu ValueErroru OverflowErroru itemsu typeu TypeError( u selfu sampleu rdru headeru columnsu columnTypesu iu checkedu rowu colu thisTypeu hasHeaderu colType( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu has_header� sJ u Sniffer.has_headerN( u __name__u __module__u __qualname__u __doc__u __init__u Noneu sniffu _guess_quote_and_delimiteru _guess_delimiteru has_header( u __locals__( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu Sniffer� s K g( u __doc__u reu _csvu Erroru __version__u writeru readeru register_dialectu unregister_dialectu get_dialectu list_dialectsu field_size_limitu QUOTE_MINIMALu QUOTE_ALLu QUOTE_NONNUMERICu QUOTE_NONEu Dialectu _Dialectu iou StringIOu __all__u excelu excel_tabu unix_dialectu DictReaderu DictWriteru complexu NameErroru floatu Sniffer( ( ( u( /opt/alt/python33/lib64/python3.3/csv.pyu <module> s. ^ 2!
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