python获取文件大小

# !/usr/bin/python3.4

# -*- coding: utf-8 -*-

import os

# 字节bytes转化kb\m\g

def formatSize(bytes):

    try:

        bytes = float(bytes)

        kb = bytes / 1024

    except:

        print("传入的字节格式不对")

        return "Error"

    if kb >= 1024:

        M = kb / 1024

        if M >= 1024:

            G = M / 1024

            return "%fG" % (G)

        else:

            return "%fM" % (M)

    else:

        return "%fkb" % (kb)

# 获取文件大小

def getDocSize(path):

    try:

        size = os.path.getsize(path)

        return formatSize(size)

    except Exception as err:

        print(err)

# 获取文件夹大小

def getFileSize(path):

    sumsize = 0

    try:

        filename = os.walk(path)

        for root, dirs, files in filename:

            for fle in files:

                size = os.path.getsize(path + fle)

                sumsize += size

        return formatSize(sumsize)

    except Exception as err:

        print(err)

if __name__ == "__main__":

    print(getDocSize("../detailhtml/20161103112313.html"))

    # 1006.142578kb

    print(getFileSize("../data/"))

    # 111.856756M