Pyhon字符串处理

s=open(r"C:\Users\lenovo\Desktop\test.csv",'w')
s.close()

with open(r"C:\Users\lenovo\Desktop\test.csv",'a') as q:
    with open(r'C:\Users\lenovo\Desktop\123.csv','r') as f:
        for i in f:
            p=i.strip()  #默认删除前后端 ‘\n\t\r’
            print(p.split(","))
            l=i.split(",")  #按照指定字符分割，以列表方式返回
            print(l)
            q.write(str(l)+',')