python mat格式转换成csv格式

完整代码：

import scipy.io as sio
import pandas as pd
import os
def mat2csv():
    """ 将当前目录下的data目录下的 .mat 文件转换成多个 .csv文件 :return: """
    curr_path = os.path.dirname("E:/AirLines-Passengers-Forecasting-LSTM-master/")
    mat_data_path = os.path.join(curr_path, "data")
    csv_data_path = os.path.join(curr_path, "csv")
    if not os.path.exists(csv_data_path):
        os.makedirs(csv_data_path)
    if not os.path.exists(mat_data_path):
        os.makedirs(mat_data_path)
    file_list = os.listdir(mat_data_path)
    mat_list = [file_name for file_name in file_list if file_name.endswith(".mat")]
    print("find mat file : ", mat_list)

    for mat_file in mat_list:
        file_path = os.path.join(mat_data_path, mat_file)
        mat_data = sio.loadmat(file_path)
        version = str(mat_data.get("__version__", "1.0")).replace(".", "_")
        for key in mat_data.keys():
            if not str(key).startswith("__"):
                data = mat_data[key][:]
                print(mat_file)
                try:
                    dfdata = pd.DataFrame(data)
                except ValueError as e:
                    print(e.message)
                    continue
                csv_name = "_".join([mat_file.split(".")[0], key, version, '.csv'])
                csv_path = os.path.join(csv_data_path, csv_name)
                dfdata.to_csv(csv_path)


if __name__ == "__main__":
    mat2csv()

所遇错误：

解决办法：
Python3.x中不再支持iterkeys()，所以将iterkeys()改成keys()，即data.keys()