def pkl_load(name, folder=False, sim=False):
    """This scripts loads an pkl-file. It automatically checks known folders if no folder is specified.

    Args:
      name:        Name of pkl-file  (<name>.pkl)
      folder:        Folder containing pkl file
      sim:        Simulation for checking automatically folders for

    Example:
      to read ".pc/sim.pkl" use: pkl_load('sim', '.pc')
      or simply pkl_load('sim'), since pkl_load checks for following folders automatically: '.pc', 'data/.pc'
    """

    import pickle
    from os.path import join, exists

    if not name.endswith(".pkl"):
        name = name + ".pkl"  # add .pkl to name if not already ending with

    # if folder is not defined try to find the pkl-file at typical places
    sim_path = "."
    if sim:
        sim_path = sim.path
    if not folder:
        if exists(join(sim_path, ".pc", name)):
            folder = join(sim_path, ".pc")
            print("~ Found " + name + " in " + folder)
        elif exists(join(sim_path, "data/.pc", name)):
            folder = join(sim_path, "data/.pc")
            print("~ Found " + name + " in " + folder)
        elif exists(join(sim_path, ".", name)):
            folder = join(sim_path, ".")
            print("~ Found " + name + " in " + folder)
        else:
            print("~ Couldnt find file " + name)
            return False

    # open file
    file = join(folder, name)
    try:  # check on existance
        if not exists(file) or not exists(join(sim_path, file)):
            print("!! ERROR: pkl_load couldnt load " + file)
            return False
        try:  # open file and return it
            with open(file, "rb") as f:
                return pickle.load(f)
        except:
            with open(join(sim_path, file), "rb") as f:
                return pickle.load(f)

    except:  # if anything goes wrong
        print("!! ERROR: Something went wrong while importing pkl-file!")
        return False