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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def SNRPlanet(SNRStar, starPlanetFlux, Nobs, pixPerbin, NVisits=1):
 r""" Calculate the Signal to Noise Ratio of the planet atmosphere .. math:: \text{SNR}_\text{planet} = \text{SNR}_\text{star} \times \Delta F \times \sqrt{N_\text{obs}} \times \sqrt{N_\text{pixPerbin}} \times \sqrt{N_\text{visits}} Where :math:`\text{SNR}_\star` SNR of the star detection, :math:`\Delta F` ratio of the terminator to the star, :math:`N_\text{obs}` number of exposures per visit, :math:`N_\text{pixPerBin}` number of pixels per wavelength bin, :math:`N_\text{visits}` number of visits. :return: """


    SNRplanet = SNRStar * starPlanetFlux * \
        sqrt(Nobs) * sqrt(pixPerbin) * sqrt(NVisits)

    return SNRplanet