pandas逐行追加到csv的正确方式

pandas逐行追加到csv的正确方式：

# ---encoding:utf-8---
# @Author  : STZZ AIOT TLZS
# @Email   ：stzzaiottlzs@gmail.com
# @Site    : AIOT
# @File    : 逐行追加到csv文件.py
# @Software: PyCharm
import pandas as pd


def append_to_csv():
    data_df = pd.DataFrame(columns=["a", "b"])

    data_df.loc[0] = ["1", "11"]
    data_df.to_csv("test.csv", mode="a", index=False, encoding="utf-8")

    data_df.loc[0] = ["2", "22"]
    data_df.to_csv("test.csv", mode="a", index=False, header=False, encoding="utf-8")


def __test_append_to_csv__():
    append_to_csv()


if __name__ == '__main__':
    __test_append_to_csv__()