file.py

def get_dataset(filehandle, start_dataset,end_dataset): # dataset_type : Dataset_01, Dataset_02, Dataset_03 or Dataset_04
    dataset = []
    with open(filehandle) as lines:
        for num, line in enumerate(lines, 1):
            line = line.replace(" ", "")
            if start_dataset in line:
                start_pos = num
            if end_dataset in line:
                end_pos = num
            #if line  != "\n":
               #print(line.split(";"))
    lines = open(filehandle).readlines()
    for x in range(start_pos, end_pos):
        lines[x] = lines[x].replace(" ", "")
        print(lines[x])