pythonはpycassaを使ってcassandraをリンクしてデータを取得します。
KEYSPACE1' = pycassa.ConnectionPool('KEYSPACE1') COLUMNFAMILY1 = pycassa.ColumnFamily(KEYSPACE1', 'COLUMNFAMILY1') #va=COLUMNFAMILY1.get('test1') 100 va=COLUMNFAMILY1.get('test1',column_count=300)get（key[，columns][，columnustart][，columnfinish][，columnuurversed]][，columnucount]][，include meestamp]][，super ucolumn]、[，readCans sistencyulevere]
Fetch all or part of the row with key.
The columns fetch may be limited to a specified list of column names using columns.
Alternative ely，you may fetch a slice of columns or super columns from a row using column_start，column_finish、and column_count.Setting these will cause columns or super columns to be fetch starting with column_start、continuing until column_count columns or super columns have been fetch or column_finish is reached.If column_start is left the empty string、the slice will begin with the start of the row；leaving column_finish blank will cause the sless to exted to the end of the row.Note that column_count defaults to 100、so rows over this size will not be copletely fetch ed by default.
If column_reversed is True，columns are fetch ed in reverse sorted order，begining with column_start.In this case，if column_start is the empty string，the slice will begin with the end of the row.
You may fetch all or part of only a single super column by setting super_column.If this set、column_start，column_finish、column_count，and column_reversed will appley to the subcolumns of super_column.
To include everry column's timestamp in the result set，set include_timestamp to True.Result will include a(value、timestamp)tuple for each column.
If this is a standar column family，the return type is of the form{columnuname:columnuvalue}If this a super column family and super_column is not specified，the rerrouts are of the form｛super ucolumn_name:{column_name，columnuvalue｝.If super_column is set、the super column name will be excluded and the rerrouts are of the form｛columnuname：columnuvalue｝