old_contents: import math
  class distances:
  	@staticmethod
  	def geographic_distance(lat1, lng1, lat2, lng2):
          lat1 = float(lat1)
          lng1 = float(lng1)
          lat2 = float(lat2)
          lng2 = float(lng2)
  		lat1 = (lat1 * math.pi) / 180
  		lng1 = (lng1 * math.pi) / 180
  		lat2 = (lat2 * math.pi) / 180
  		lng2 = (lng2 * math.pi) / 180
  		a = (math.sin(lat1)*math.sin(lat2))+(math.cos(lat1)*math.cos(lat2)*math.cos(lng2 - lng1))
  		return math.acos(a) * 6371.01
  
  	@staticmethod
  	def max_variation_lat(distance):
  		max_variation = abs((180 * distance) / (6371.01 * math.pi))
  		return max_variation		
  
  	@staticmethod
  	def max_variation_lon(address_latitude, distance):
  		top = math.sin(distance / 6371.01)
  		bottom = math.cos((math.pi * address_latitude)/180)
  		ratio = top / bottom
  		if -1 > ratio or ratio > 1:
  			max_variation = 100
  		else:
  			max_variation = abs(math.asin(ratio) * (180 / math.pi))
  		return max_variation
  
  
new_contents: import math
  class distances:
      @staticmethod
      def geographic_distance(lat1, lng1, lat2, lng2):
          lat1 = float(lat1)
          lng1 = float(lng1)
          lat2 = float(lat2)
          lng2 = float(lng2)
          lat1 = (lat1 * math.pi) / 180
          lng1 = (lng1 * math.pi) / 180
          lat2 = (lat2 * math.pi) / 180
          lng2 = (lng2 * math.pi) / 180
          a = (math.sin(lat1)*math.sin(lat2))+(math.cos(lat1)*math.cos(lat2)*math.cos(lng2 - lng1))
          return math.acos(a) * 6371.01
  
  	@staticmethod
  	def max_variation_lat(distance):
  		max_variation = abs((180 * distance) / (6371.01 * math.pi))
  		return max_variation		
  
  	@staticmethod
  	def max_variation_lon(address_latitude, distance):
  		top = math.sin(distance / 6371.01)
  		bottom = math.cos((math.pi * address_latitude)/180)
  		ratio = top / bottom
  		if -1 > ratio or ratio > 1:
  			max_variation = 100
  		else:
  			max_variation = abs(math.asin(ratio) * (180 / math.pi))
  		return max_variation
  
  
subject: fix indentation