pyFindNearestCoordinates

points = [[501, 335], [249, 380], [544, 696], [225, 159], [11, 124], [334, 559], [634, 95], [455, 632], [89, 611],
          [17, 243],  [316, 67], [727, 223], [589, 534], [736, 703], [578, 361], [663, 614], [654, 623], [677, 345],
          [622, 583], [516, 20], [640,404], [480, 15], [440, 168], [542, 412], [578, 551], [294, 308], [249, 250],
          [663, 682], [650, 57], [470, 514], [352, 601], [631, 519], [416, 617], [717, 436], [202, 469], [47, 620],
          [441, 529], [91, 175], [415, 600], [426, 642], [583, 184], [121, 319], [358, 703]]

while True:
    user_pos = input("\nEnter your position as x, y: ")
    user_data = user_pos.split(",")
    if len(user_data) != 2:
        print("Invalid coordinate data. Re-try")
        continue

    try:
        ux = float(user_data[0].strip())
        uy = float(user_data[1].strip())
    except:
        print("Invalid coordinate data ")
        continue

    near_dist = float("inf")
    near_point = 0
    for idx, point in enumerate(points):
        dsq = (point[0] - ux) ** 2 + (point[1] - uy) ** 2
        if dsq < near_dist:
            near_dist = dsq
            near_point = idx

    near_dist = near_dist ** 0.5
    print(f"The nearest point to you is {points[near_point]} at a distance of {near_dist:.2f}")