#  PlanetsDictionary.py  Copyright (c) Kari Laitinen

#  http://www.naturalprogramming.com

#  2006-05-28  File created.
#  2022-12-27  Converted to Python 3.

#  This is another version of program Planets.py.
#  In this version Planet objects are stored in a Python dictionary.
#  The main program is thus shorter. Class Planet is the same as in
#  Planets.py


class Planet :

   def __init__( self, given_planet_name,
                       given_mean_distance_from_sun,
                       given_circulation_time_around_sun,
                       given_rotation_time_around_own_axis,
                       given_equatorial_radius_in_kilometers,
                       given_mass_compared_to_earth,
                       given_number_of_moons ) :

      self.planet_name  =  given_planet_name
      self.mean_distance_from_sun  =  given_mean_distance_from_sun
      self.circulation_time_around_sun  =  given_circulation_time_around_sun
      self.rotation_time_around_own_axis  =  \
                                      given_rotation_time_around_own_axis
      self.equatorial_radius_in_kilometers  =  \
                                      given_equatorial_radius_in_kilometers
      self.mass_compared_to_earth  =  given_mass_compared_to_earth
      self.number_of_moons  =  given_number_of_moons


   def get_planet_name( self ) :

      return  self.planet_name


   def print_planet_data( self ) :

      print( "\n %s orbits the sun in average distance of %.0f kilometers."  %\
             ( self.planet_name,  ( self.mean_distance_from_sun * 149500000 )), end="" )
      print( "\n It takes %f years for %s to go around the sun once."   %  \
             ( self.circulation_time_around_sun, self.planet_name ), end="" )
      print( "\n The radius of %s is %d kilometers."  %   \
             ( self.planet_name, self.equatorial_radius_in_kilometers ) )



#  The main program begins.

#  Much of the information given in the following table is
#  relative to the information concerning the Earth. E.g.,
#  Pluto is 39.507 times further from the sun than the Earth.
#  The data concerning the number of moons may be old.

planet_dictionary  =  {}   #  Create an empty dictionary

planet_dictionary[ "mercury" ]  =  Planet(
    "Mercury",  0.387,   0.241,  58.815,  2433,   0.05,  0  )
planet_dictionary[ "venus" ]    =  Planet(
    "Venus",    0.723,   0.615, 224.588,  6053,   0.82,  0  )
planet_dictionary[ "earth" ]    =  Planet(
    "Earth",    1.000,   1.000,   1.000,  6379,   1.00,  1  )
planet_dictionary[ "mars" ]     =  Planet(
    "Mars",     1.523,   1.881,   1.029,  3386,   0.11,  2  )
planet_dictionary[ "jupiter" ]  =  Planet(
    "Jupiter",  5.203,  11.861,   0.411, 71370, 317.93, 12  )
planet_dictionary[ "saturn" ]   =  Planet(
    "Saturn",   9.541,  29.457,   0.428, 60369,  95.07, 10  )
planet_dictionary[ "uranus" ]   =  Planet(
    "Uranus",  19.190,  84.001,   0.450, 24045,  14.52,  5  )
planet_dictionary[ "neptune" ]  =  Planet(
    "Neptune", 30.086, 164.784,   0.657, 22716,  17.18,  2  )
planet_dictionary[ "pluto" ]    =  Planet(
    "Pluto",   39.507, 248.35,    6.410,  5700,   0.18,  0  )


print( "\n This program can give you information about the"    \
       "\n planets in our solar system. Give a planet name: ", end="" )

planet_name_from_user  =  input().lower()

if  planet_name_from_user  in  planet_dictionary :

   planet_dictionary[ planet_name_from_user ].print_planet_data()

else :

   print( "\n Sorry, could not find information on \"%s\"."  %  \
          planet_name_from_user )

print( "" )