在我重新发明这个特殊的轮子之前,有没有人有一个很好的用Python计算目录大小的例程?如果该例程能以Mb/Gb等格式格式化大小,那就太好了。
当前回答
Python 3.6+递归文件夹/文件大小使用os.scandir。和@blakev的回答一样强大,但更短,采用EAFP python风格。
import os
def size(path, *, follow_symlinks=False):
try:
with os.scandir(path) as it:
return sum(size(entry, follow_symlinks=follow_symlinks) for entry in it)
except NotADirectoryError:
return os.stat(path, follow_symlinks=follow_symlinks).st_size
其他回答
python3.5 +
from pathlib import Path
def get_size(folder: str) -> int:
return sum(p.stat().st_size for p in Path(folder).rglob('*'))
用法::
In [6]: get_size('/etc/not-exist-path')
Out[6]: 0
In [7]: get_size('.')
Out[7]: 12038689
In [8]: def filesize(size: int) -> str:
...: for unit in ("B", "K", "M", "G", "T"):
...: if size < 1024:
...: break
...: size /= 1024
...: return f"{size:.1f}{unit}"
...:
In [9]: filesize(get_size('.'))
Out[9]: '11.5M'
我使用带有scandir的python 2.7.13,这里是我的一行递归函数,以获得文件夹的总大小:
from scandir import scandir
def getTotFldrSize(path):
return sum([s.stat(follow_symlinks=False).st_size for s in scandir(path) if s.is_file(follow_symlinks=False)]) + \
+ sum([getTotFldrSize(s.path) for s in scandir(path) if s.is_dir(follow_symlinks=False)])
>>> print getTotFldrSize('.')
1203245680
https://pypi.python.org/pypi/scandir
Chris的回答很好,但可以通过使用set来检查已看到的目录来使其更加惯用,这也避免了对控制流使用异常:
def directory_size(path):
total_size = 0
seen = set()
for dirpath, dirnames, filenames in os.walk(path):
for f in filenames:
fp = os.path.join(dirpath, f)
try:
stat = os.stat(fp)
except OSError:
continue
if stat.st_ino in seen:
continue
seen.add(stat.st_ino)
total_size += stat.st_size
return total_size # size in bytes
Python 3.5使用os.scandir递归文件夹大小
def folder_size(path='.'):
total = 0
for entry in os.scandir(path):
if entry.is_file():
total += entry.stat().st_size
elif entry.is_dir():
total += folder_size(entry.path)
return total
使用pathlib,我想出了这个一行程序来获取文件夹的大小:
sum(file.stat().st_size for file in Path(folder).rglob('*'))
这是我为一个漂亮的格式化输出:
from pathlib import Path
def get_folder_size(folder):
return ByteSize(sum(file.stat().st_size for file in Path(folder).rglob('*')))
class ByteSize(int):
_KB = 1024
_suffixes = 'B', 'KB', 'MB', 'GB', 'PB'
def __new__(cls, *args, **kwargs):
return super().__new__(cls, *args, **kwargs)
def __init__(self, *args, **kwargs):
self.bytes = self.B = int(self)
self.kilobytes = self.KB = self / self._KB**1
self.megabytes = self.MB = self / self._KB**2
self.gigabytes = self.GB = self / self._KB**3
self.petabytes = self.PB = self / self._KB**4
*suffixes, last = self._suffixes
suffix = next((
suffix
for suffix in suffixes
if 1 < getattr(self, suffix) < self._KB
), last)
self.readable = suffix, getattr(self, suffix)
super().__init__()
def __str__(self):
return self.__format__('.2f')
def __repr__(self):
return '{}({})'.format(self.__class__.__name__, super().__repr__())
def __format__(self, format_spec):
suffix, val = self.readable
return '{val:{fmt}} {suf}'.format(val=val, fmt=format_spec, suf=suffix)
def __sub__(self, other):
return self.__class__(super().__sub__(other))
def __add__(self, other):
return self.__class__(super().__add__(other))
def __mul__(self, other):
return self.__class__(super().__mul__(other))
def __rsub__(self, other):
return self.__class__(super().__sub__(other))
def __radd__(self, other):
return self.__class__(super().__add__(other))
def __rmul__(self, other):
return self.__class__(super().__rmul__(other))
用法:
>>> size = get_folder_size("c:/users/tdavis/downloads")
>>> print(size)
5.81 GB
>>> size.GB
5.810891855508089
>>> size.gigabytes
5.810891855508089
>>> size.PB
0.005674699077644618
>>> size.MB
5950.353260040283
>>> size
ByteSize(6239397620)
我还遇到了这个问题,它有一些更紧凑、可能更高效的打印文件大小的策略。
推荐文章
- 如何在交互式Python中查看整个命令历史?
- 如何显示有两个小数点后的浮点数?
- 如何用OpenCV2.0和Python2.6调整图像大小
- 在每个列表元素上调用int()函数?
- 当使用代码存储库时,如何引用资源的相对路径
- 如何在Flask-SQLAlchemy中按id删除记录
- 在Python中插入列表的第一个位置
- Python Pandas只合并某些列
- 如何在一行中连接两个集而不使用“|”
- 从字符串中移除前缀
- 代码结束时发出警报
- 如何在Python中按字母顺序排序字符串中的字母
- 在matplotlib中将y轴标签添加到次要y轴
- 如何消除数独方块的凹凸缺陷?
- 为什么出现这个UnboundLocalError(闭包)?