input: Write a function to find numbers in a range that are divisible by 7 but not by 5.
  assert find_numbers(2000, 2500)==[2002, 2009, 2016, 2023, 2037, 2044, 2051, 2058, 2072, 2079, 2086, 2093, 2107, 2114, 2121, 2128, 2142, 2149, 2156, 2163, 2177, 2184, 2191, 2198, 2212, 2219, 2226, 2233, 2247, 2254, 2261, 2268, 2282, 2289, 2296, 2303, 2317, 2324, 2331, 2338, 2352, 2359, 2366, 2373, 2387, 2394, 2401, 2408, 2422, 2429, 2436, 2443, 2457, 2464, 2471, 2478, 2492, 2499]
  assert find_numbers(1500, 1600)==[1507, 1514, 1535, 1542, 1549, 1563, 1570, 1577, 1584, 1598]
  assert find_numbers(100, 200)==[102, 109, 116, 137, 144, 151, 158, 179, 186, 193]
output: def find_numbers(start, end):
      return [num for num in range(start, end + 1) if num % 7 == 0 and num % 5 != 0]