用Python实现数据透视表、音频文件格式转换

1.用Python实现数据透视表

import pandas as pdif __name__ == '__main__':# df = pd.read_excel('广告-资源位变现效率监测看板-1.xlsx', sheet_name='各业务在该资源位的明细数据')df = pd.read_excel('填充率分析-Q3.xlsx', sheet_name='库存底表')df = df.loc[df['dt'].str.startswith('2023-09-21')]# df = df.loc[df['dt'].str.startswith('2023-09-')]df = df.loc[df['资源位'] == '亮屏贴片']# df = df.loc[df['业务类型'] == '品牌广告']total = df['库存'].sum()print(total)

2.用Python实现音频文件格式转换

from pydub import AudioSegment
import osdef add_path():path = os.environ.get('PATH')path = path[:-1]# new_path = 'C:\\Program Files\\gs\\gs10.01.2\\bin;.'new_path = 'C:\\myPC\\tools\\ffmpeg\\bin;.'updated_path = path + new_pathos.environ['PATH'] = updated_pathdef convert_m4a_to_wav(input_file, output_file):audio = AudioSegment.from_file(input_file, format="m4a")audio.export(output_file, format="wav", parameters=["-ar", "16000"])print(f"Duration of {output_file}: {audio.duration_seconds} seconds")return audio.duration_secondsif __name__ == '__main__':add_path()directory = "./M4A/"files = os.listdir(directory)total_seconds = 0.0for file in files:print("Processing ", file)file = file.replace(".m4a", "")total_seconds = total_seconds + convert_m4a_to_wav("./M4A/" + file + ".m4a", "./WAV/" + file + ".WAV")total_minutes = total_seconds / 60.0total_hours = total_minutes / 60.0print("Total: " + str(total_seconds) + " sec; ")print("Total: " + str(total_minutes) + " min; ")print("Total: " + str(total_hours) + " hour; ")