python 分割文件数据

</pre><pre name="code" class="python">import os

file_object = open('C:/Users/14091277/Desktop/custNums_pre.txt')
BASE_DIR = os.path.dirname(__file__)
try:
    i=0;
    lines = file_object.readlines()
    while True:

        fname=BASE_DIR+"\/"+str(i)+".csv"
        split_object = open(fname,'a')
        start = i*100000
        end = (i+1)*100000
        try:
            for line in lines[start:end]:
                split_object.write(line)
        finally:
                split_object.close()   
        
        i+=1
        if(len(lines)<i*10000):
            break
finally:
    
    file_object.close()