import pandas as pd list = [1,2,3]#一维数据 df = pd.Series(list) df.to_csv(r"C:\xxx\04.csv",mode ="a+",index=False,header=False) #追加模式,去掉索引和表头 list2 = [[1,2,3],[11,12,13],[21,22,23],[31,32,33],[41,42,43],[51,52,53],]#多维数据 df1 = pd.DataFrame(list2) df1.to_csv(r"C:\xxx\04.csv",mode ="a+",index=False,header=False)