import os
import shutil
import time

# 格式化时间
def formatTime(longtime):
    return time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(longtime))

# 获取文件大小，结果保留两位小数，单位MB
def get_file_size(path):
    f = os.path.getsize(path)
    f = f/float(1024 * 1024)
    return round(f, 2)

# 复制一个文件夹下的文件到另一个文件夹
def copyfilesbetweendirs(srcPath, dstPath):
    if not os.path.exists(srcPath):
        print('srcPath dose not exist.')
        return
    if os.path.exists(dstPath):
        try:
            shutil.rmtree(dstPath)
        except Exception as e:
            print(e)
    for fileobj in os.listdir(srcPath):
        #print(fileobj)
        if os.path.isdir(fileobj):
            try:
                shutil.copytree(os.path.join(srcPath, fileobj), os.path.join(dstPath, fileobj))
            except Exception as e:
                print(e)
        elif os.path.isfile(fileobj):
            try:
                shutil.copyfile(os.path.join(srcPath, fileobj), os.path.join(dstPath, fileobj))
            except Exception as e:
                print(e)
    return

# 显示一个目录下所有文件和文件夹的最后修改时间
def showfileinfo(filePath):
    if not os.path.exists(filePath):
        print('filePath does not exist.')
        return
    for fileobj in os.listdir(filePath):
        fileinfo = os.path.getmtime(os.path.join(filePath, fileobj))
        if os.path.isdir(fileobj):
            print(fileobj, formatTime(fileinfo))
        elif os.path.isfile(fileobj):
            print(fileobj, formatTime(fileinfo))

if __name__ == '__main__':
    copyfilesbetweendirs('E:\\PythonDataScience','E:\\bat_learning')
    showfileinfo('E:\\bat_learning')