csvモジュールは、この問題に対して csv sniffer を使用することを推奨しているようです。
彼らは、私があなたのケースに適応した次の例を示しています。
with open('example.csv', 'rb') as csvfile: # python 3: 'r',newline=""
dialect = csv.Sniffer().sniff(csvfile.read(1024), delimiters=";,")
csvfile.seek(0)
reader = csv.reader(csvfile, dialect)
# ... process CSV file contents here ...
試してみましょう。
[9:13am][wlynch@watermelon /tmp] cat example
#!/usr/bin/env python
import csv
def parse(filename):
with open(filename, 'rb') as csvfile:
dialect = csv.Sniffer().sniff(csvfile.read(), delimiters=';,')
csvfile.seek(0)
reader = csv.reader(csvfile, dialect)
for line in reader:
print line
def main():
print 'Comma Version:'
parse('comma_separated.csv')
print
print 'Semicolon Version:'
parse('semicolon_separated.csv')
print
print 'An example from the question (kingdom.csv)'
parse('kingdom.csv')
if __name__ == '__main__':
main()
サンプル入力
[9:13am][wlynch@watermelon /tmp] cat comma_separated.csv
test,box,foo
round,the,bend
[9:13am][wlynch@watermelon /tmp] cat semicolon_separated.csv
round;the;bend
who;are;you
[9:22am][wlynch@watermelon /tmp] cat kingdom.csv
ReleveAnnee;ReleveMois;NoOrdre;TitreRMC;AdopCSRegleVote;AdopCSAbs;AdoptCSContre;NoCELEX;ProposAnnee;ProposChrono;ProposOrigine;NoUniqueAnnee;NoUniqueType;NoUniqueChrono;PropoSplittee;Suite2LecturePE;Council PATH;Notes
1999;1;1;1999/83/EC: Council Decision of 18 January 1999 authorising the Kingdom of Denmark to apply or to continue to apply reductions in, or exemptions from, excise duties on certain mineral oils used for specific purposes, in accordance with the procedure provided for in Article 8(4) of Directive 92/81/EEC;U;;;31999D0083;1998;577;COM;NULL;CS;NULL;;;;Propos* are missing on Celex document
1999;1;2;1999/81/EC: Council Decision of 18 January 1999 authorising the Kingdom of Spain to apply a measure derogating from Articles 2 and 28a(1) of the Sixth Directive (77/388/EEC) on the harmonisation of the laws of the Member States relating to turnover taxes;U;;;31999D0081;1998;184;COM;NULL;CS;NULL;;;;Propos* are missing on Celex document
サンプルプログラムを実行すると、次のようになります。
[9:14am][wlynch@watermelon /tmp] ./example
Comma Version:
['test', 'box', 'foo']
['round', 'the', 'bend']
Semicolon Version:
['round', 'the', 'bend']
['who', 'are', 'you']
An example from the question (kingdom.csv)
['ReleveAnnee', 'ReleveMois', 'NoOrdre', 'TitreRMC', 'AdopCSRegleVote', 'AdopCSAbs', 'AdoptCSContre', 'NoCELEX', 'ProposAnnee', 'ProposChrono', 'ProposOrigine', 'NoUniqueAnnee', 'NoUniqueType', 'NoUniqueChrono', 'PropoSplittee', 'Suite2LecturePE', 'Council PATH', 'Notes']
['1999', '1', '1', '1999/83/EC: Council Decision of 18 January 1999 authorising the Kingdom of Denmark to apply or to continue to apply reductions in, or exemptions from, excise duties on certain mineral oils used for specific purposes, in accordance with the procedure provided for in Article 8(4) of Directive 92/81/EEC', 'U', '', '', '31999D0083', '1998', '577', 'COM', 'NULL', 'CS', 'NULL', '', '', '', 'Propos* are missing on Celex document']
['1999', '1', '2', '1999/81/EC: Council Decision of 18 January 1999 authorising the Kingdom of Spain to apply a measure derogating from Articles 2 and 28a(1) of the Sixth Directive (77/388/EEC) on the harmonisation of the laws of the Member States relating to turnover taxes', 'U', '', '', '31999D0081', '1998', '184', 'COM', 'NULL', 'CS', 'NULL', '', '', '', 'Propos* are missing on Celex document']
また、私が使用している python のバージョンも注目に値するでしょう。
[9:20am][wlynch@watermelon /tmp] python -V
Python 2.7.2