How to read a musical file using python and identify the various frequency levels of the notes? [closed]

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please help me with the python...this is my project topic...

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Fourier transforms. Learn some basics about music and signals before even considering code.

Basic Outline:

Audio Import

See http://wiki.python.org/moin/Audio/ and find one that will import your (unspecified) file.

Analysis

Get numpy.

>>> from numpy.fft import fft
>>> a = abs(fft([1,2,3,2]*4))
>>> a
array([ 32.,   0.,   0.,   0.,   8.,   0.,   0.,   0.,  
         0.,   0.,   0.,   0.,   8.,   0.,   0.,   0.])

We can clearly see the DC component at 0, then the major AC component at fs/4 and 3*fs/4 due to this being a real signal, as all frequency components are mirrored over the X-axis.