fo = open("price2016bj.csv", "w")
ls = ['AAA', 'BBB', 'CCC', 'DDD']
fo.write(",".join(ls)+ "\n")
fo.close()
fo= open("price2016.csv", "w")
ls = []
for line in fo:
line = line.replace("\n","")
ls.append(line.split(","))
print(ls)
fo.close()
fo = open("price2016bj.csv", "r")
ls = ['AAA', 'BBB', 'CCC', 'DDD']
fo.write(",".join(ls)+ "\n")
fo.close()
fname = input("请输入要写入的文件: ")
fo = open(fname, "w+")
ls = ["AAA", "BBB", "CCC"]
fo.writelines(ls)
for line in fo:
print(line)
fo.close()
