我在物理程序中有以下变量：
average_person_mass = 70
earth_gravity = 9.80665
earth_mass = 5.97e+24
earth_moon_distance = 3.844e+8
earth_radius = 6371000
earth_sun_distance = 1.496e+11
G = 6.67e-11
我想打印它们而不显示它们的值：
average_person_mass
earth_gravity
earth_mass
earth_moon_distance
earth_radius
earth_sun_distance
G
我该怎么办？