Fix several ResourceWarnings: unclose file

[BoboTiG]

Hello,

This is a little patch for resource leaks such as:

$ python setup.py install setup.py:14: ResourceWarning: unclosed file <_io.TextIOWrapper name='README.rst' mode='r' encoding='UTF-8'> long_description=open("README.rst").read(), running install ...

$ bash examples/sample.sh scatterplot.py:100: ResourceWarning: unclosed file <_io.TextIOWrapper name='examples/data/texas.txt' mode='r' encoding='UTF-8'> plot_scatter(opts.f, opts.x, opts.y, opts.size, opts.pch, opts.colour, opts.t) with x and y coords scatterplot.py:57: ResourceWarning: unclosed file <_io.TextIOWrapper name='examples/data/x_test.txt' mode='r' encoding='UTF-8'> xs = [float(str(row).strip()) forrowin open(xs)] scatterplot.py:58: ResourceWarning: unclosed file <_io.TextIOWrapper name='examples/data/y_test.txt' mode='r' encoding='UTF-8'> ys = [float(str(row).strip()) forrowin open(ys)] histogram.py:109: ResourceWarning: unclosed file <_io.TextIOWrapper name='examples/data/exp.txt' mode='r' encoding='UTF-8'> f = open(f).readlines()

I also fixed this error:

Traceback (mostrecentcalllast): File".../bin/scatter", line11, in<module>load_entry_point('bashplotlib==0.6.5', 'console_scripts', 'scatter')() File"scatterplot.py", line100, inmainplot_scatter(opts.f, opts.x, opts.y, opts.size, opts.pch, opts.colour, opts.t) File"scatterplot.py", line74, inplot_scatterifcs: UnboundLocalError: localvariable'cs'referencedbeforeassignment

Signed-off-by: Mickaël Schoentgen [email protected]