python3.x将mat格式转换成csv格式详细代码

• 转换mat文件为csv格式
• 解决python3.x的bug ‘dict’ object has no attribute ‘iterkeys’

项目需要转换mat文件为csv格式，网上的大部分都不是特别好,很多代码运行效果很差，参考链接是翻了好多博客看到的比较好的，但是代码在python3.x环境会报错’dict’ object has no attribute ‘iterkeys’，进行了改错，分享给大家~

参考：https://blog.youkuaiyun.com/IT_NEU_Lee/article/details/83479651?utm_medium=distribute.pc_relevant.none-task-blog-utm_term-3&spm=1001.2101.3001.4242

#coding=utf-8
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(__file__)
    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.iterkeys():
            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()