목적

문제

결론

NG 예

최종 셀이 끝나지 않는다. (처음 시작하지 않았습니까?)

OK 예

import pandas as pd
import os,glob
from datetime import datetime as dt
from multiprocessing import Pool

FOLDER_PATH = r'folder_path\\'
FILE_TYPE = r'*.csv'
FILE_FORMAT = 'Report_%Y%m%d.csv'

def read_report_to_dataframe():
    # ファイルパスをリスト化
    csv_pathlist = glob.glob(FOLDER_PATH + FILE_TYPE)
    with Pool(os.cpu_count()) as p:
        df = pd.concat(p.map(read_report, csv_pathlist))

    return df 


# report読み込み
def read_report(csv_path):
    separator_list = [';',',']

    for sep in separator_list:
        df = pd.read_csv(filepath_or_buffer=csv_path,
                         engine='python',
                         parse_dates=[0],
                         index_col=[0],
                         skiprows=[1],
                         nrows=96,
                         sep=sep)
        # データフレームが空か確認
        if not df.empty:
            break

    return df 

import func
func.read_report_to_dataframe()

요약