[Pytables-users] beginner question - simultaneously accessing multiple files

[Dan D. <dda...@ju...>]

I open 2 files and while the files are different as shown by the "Last
modif" from the print, the "Object Tree" data of the second
incorrectly is the same as the first. As h5ls indicates they are
clearly different.

Now, if I change the incorrect code and close 'a' before opening 'b'
the problem goes away. But, I want to access multiple files at the
same time. What is the proper way to do this?

Thanks,
Dan

---------------------------------------------------------------------------------
INCORRECT CODE

    a = openFile(path(r'y:\otm\h5\20090521\foo.h5'), mode = "r")
    b = openFile(path(r'y:\otm\h5\20090521\bar.h5'), mode = "r")

    print "**** FILE:", a.filename, a
    print "**** FILE:", b.filename, b

---------------------------------------------------------------------------------
OUTPUT

**** FILE: y:\otm\h5\20090521\foo.h5 y:\otm\h5\20090521\foo.h5 (File) ''
Last modif.: 'Wed Jun 10 11:55:02 2009'
Object Tree:
/ (RootGroup) ''
/OtmCancelEvent (Table(62,), zlib(5)) ''
/OtmFocusEvent (Table(10924,), zlib(5)) ''
/OtmOrder (Table(2282,), zlib(5)) ''
/OtmOrderEvent (Table(15421,), zlib(5)) ''
/OtmOrderLocation (Table(52,), zlib(5)) ''
/OtmTrade (Table(6329,), zlib(5)) ''
/OtmTradeEvent (Table(6329,), zlib(5)) ''

**** FILE: y:\otm\h5\20090521\bar.h5 y:\otm\h5\20090521\bar.h5 (File) ''
Last modif.: 'Wed Jun 10 11:54:03 2009'
Object Tree:
/ (RootGroup) ''
/OtmCancelEvent (Table(62,), zlib(5)) ''
/OtmFocusEvent (Table(10924,), zlib(5)) ''
/OtmOrder (Table(2282,), zlib(5)) ''
/OtmOrderEvent (Table(15421,), zlib(5)) ''
/OtmOrderLocation (Table(52,), zlib(5)) ''
/OtmTrade (Table(6329,), zlib(5)) ''
/OtmTradeEvent (Table(6329,), zlib(5)) ''

---------------------------------------------------------------------------------
H5LS
c:\dev\latest\py>h5ls y:\otm\h5\20090521\foo.h5
h5ls y:\otm\h5\20090521\foo.h5
OtmCancelEvent           Dataset {62/Inf}
OtmFocusEvent            Dataset {10924/Inf}
OtmOrder                 Dataset {2282/Inf}
OtmOrderEvent            Dataset {15421/Inf}
OtmOrderLocation         Dataset {52/Inf}
OtmTrade                 Dataset {6329/Inf}
OtmTradeEvent            Dataset {6329/Inf}

c:\dev\latest\py>h5ls y:\otm\h5\20090521\bar.h5
h5ls y:\otm\h5\20090521\bar.h5
OtmCancelEvent           Dataset {53/Inf}
OtmFocusEvent            Dataset {11218/Inf}
OtmOrder                 Dataset {3669/Inf}
OtmOrderEvent            Dataset {18092/Inf}
OtmOrderLocation         Dataset {650/Inf}
OtmTrade                 Dataset {3853/Inf}
OtmTradeEvent            Dataset {3853/Inf}



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