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  1. from math import radians, degrees, sin, cos, asin, acos, sqrt
  2. R = 6378.137 #km
  3. def great_circle(lon1, lat1, lon2, lat2):
  4.     lon1, lat1, lon2, lat2 = map(radians, [lon1, lat1, lon2, lat2])
  5.     return R * (
  6.         acos(sin(lat1) * sin(lat2) + cos(lat1) * cos(lat2) * cos(lon1 - lon2))
  7.     )
  8.  
  9. d = great_circle(139.74477,35.6544 ,
  10.  39.8261, 21.4225 )
  11. print( f'{d:,.2f} km')
  12.  
Success #stdin #stdout 0.02s 9468KB
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9,491.28 km
https://ideone.com/qp1Fer
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
secret

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